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  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)
  • Ultima 40 Surround AVR "5.1-Set" (2017)

Ultima 40 Surround AVR "5.1-Set" (2017)

Supernova
Ready-to-play 5.1 complete system incl. Onkyo AV receiver and Hi-Fi floor-standing speakers
(3)
Ultima 40 Surround AVR "5.1-Set"
Order the new generation now.
To the new generation
  • 8 week trial
  • Up to 12 year guarantee
  • Free & easy returns

Highlights

Why we love this product
Classic, fully equipped home cinema system. This is the Ultima 40 Surround AVR. The bundle comes with the latest features, network functions and current HDMI standards for maximum 4K enjoyment. You also save a considerable amount compared to making a single purchase and are rewarded with a system that fits together perfectly.
Key advantages at a glance
  • Ready-to-play 5.1 complete system incl. Onkyo AV receiver and Hi-Fi floor-standing speakers
  • Powerful, highly detailed playback of music, movie sound and games
  • Ultima 40 Mk2 is Teufel's most popular floor-standing speaker
  • Compact bookshelf speakers Ultima 20 Mk2 act as rear speakers.
  • Extensively equipped Onkyo NR-676E receiver with Chromecast, Bluetooth, AirPlay, Spotify, Dolby Atmos, Dolby Vision and much more.
  • Powerful subwoofer, can be used front- or down-firing, optional wireless control
  • Available in black and white, easy to expand, wall mount and feet available as accessories
  • Incl. speaker cable (30 m) and HDMI cable (1.5 m)
What others are saying about us
(5 of 5 from 3 Reviews)
All ratings
Features

Overview of our technologies

Dolby Atmos
Bluetooth
Dolby Vision Compatible
Spotify Music Streamingdienst
TIDAL
Chromecast built-in
plug & play
PC Gaming
AirPlay
HDMI 3D
Dynamic Audio Amplification
Dolby True HD
dts-HD Master Audio
dtsX
dts Digital Entertainment
Downfire
Onkyo AV-Receiver

No matter what you want to hear or see, the Onkyo receiver delivers everything in superb sound: music, games and, of course, movies. All settings are simple and easy to make. It's the perfect match for your Teufel sound system.

Bluetooth
Deezer
Tunein
Tidal
AirPlay
AccuEQ
App
HDCP 2.2
dtsX
High-Res Audio
Dolby Vision Compatible
Dolby Vision Compatible
Dynamic Audio Amplification
dts Play-Fi music is home
WiFi Certified
WiFi Certified
Dolby Atmos
 
Bluetooth
Bluetooth
Connect iOS, Android or Windows Phone smartphones wirelessly to the receiver and stream music.
 
AirPlay
AirPlay
Stream music and videos from Apple devices wirelessly over the receiver.
 
Deezer
DEEZER
Streaming service with millions of songs, playlists and radio stations at the touch of a button.
 
Tunein
TuneIn
Thousands of local and international radio stations.
 
Tidal
Tidal
Streaming service for high quality music.
 
THX
THX Select™
The THX standard is a seal of approval for particularly high-calibre sound experiences in film sound and music.
 
WiFi Certified
Wi-Fi certified
The receiver can connect to the local Wi-Fi if desired.
 
AccuEQ
AccuEQ
Integrated measuring system that can compensate for an unfavourable positioning of the speakers, for example.
 
Dolby Atmos
Dolby Atmos
The procedure assigns an individual signal to each speaker. An impressively realistic sound experience is achieved with upwards-radiating speakers, whose sound waves reflect off the ceiling and then return to the listener.
 
High-Res Audio
Hi-res audio
High-resolution broadcast audio formats such as FLAC or WAV with a sampling rate of up to 384 kHz and a word width of up to 32 bits can be played back with the receiver.
 
High-Res Audio
Chromecast built-in
Chromecast built-in – formerly Google Cast – is a technology that makes it possible to stream music service apps to Wi-Fi speakers or receivers. Streaming can be controlled via an extensive selection of Chromecast-supporting apps installed on smartphones, tablets or laptops. The Chrome browser can also be used directly for the control.
 
dtsX
dts:X
Competing format to Dolby Atmos with which sound signals can also be counteracted via high-frequency loudspeakers.
 
Dynamic Audio Amplification
Dynamic audio amplification
Adjusts the power consumption to the respective volume level.
 
dts Play-Fi music is home
dts Play-Fi
App to play music.
 
App
Onkyo controller
App for music playback and receiver settings.
 
Dolby Vision Compatible
Dolby Vision
A format that supports images with up to theoretically 12 bit color depth and can therefore counteract colour bending.
 
Flare connect
Fire Connect
A technology that allows Onkyo and Pioneer to play music in all rooms of the house.
 
VLSC
Vector Linear Shaping Circuitry (VLSC)
Conventional D/A converter methods reduce interference pulses during D/A conversion, but cannot completely eliminate them. By contrast, the VLSC (Vector Linear Shaping Circuitry) technology developed by ONKYO effectively eliminates interference components. As a result, you get virtually true-to-original analogue signals from your digital sources that reveal even the most subtle audio features.
 
HDCP 2.2
HDCP 2.2
This is a digital copy protection which is used especially for UHD-Blu-rays. All devices in an AV chain (player, AV receiver and beamer or TV set) must have an HDMI connection with HDCP 2.2 to ensure smooth playback.
Premium speakers

Quality you can trust: The Ultima 20 are among the best bookshelf speakers in their price class. Our developers in Berlin made sure this stereo pair has the best-possible sound thanks to the following:

  • Large 25 mm tweeters for a silky, soft treble
  • Large 165 mm midrange drivers with phase plug produce balanced, evenly dispersed sound
  • Trumpet bass reflex vents eliminate wind noise and chuffing for deep, clean bass
  • Klippel-optimized drivers ensure an incredibly balanced frequency response

Each driver has been optimized by first-class Klippel technology – a first for speakers in this price class. This precision calibration technology allows the Ultima 20 to produce linear and balanced playback. Bass reflex ports with trumpet vents enhance the bass without wind noise. Well-braced wooden enclosures minimize vibrations resulting in a very clean sound.

Established, universal, timeless

The Ultima 20 Mk2 scores points on style with harmoniously rounded edges, compact dimensions, and cleverly accented drivers – a self-confident look sure to enhance any interior. The speakers can be seamlessly integrated into any home, fitting easily on either a shelf, wall, or floor stand.

Teufel Stereoanlage Kombo 42 Teufel Stereoanlage Kombo 42 Stereo-Lautsprecher Ultima 20 Mk2 Teufel
Double bass

Low frequencies are handled by two parallel 165 mm fibreglass/cellulose drivers. Thanks to a  cabinet volume of 52 litres and double reflex vent, the Ultima 40 Mk2 produces fantastic bass down to 45 Hz. A large mid-range driver (165 mm) ensures great speech intelligibility, and the two 25 mm tweeters handle the top ranges brilliantly.

Developed in Berlin

When it comes to sound, Teufel leaves nothing to chance. The tiniest imperfections in the Ultima 40's driver action were identified per laser technology and corrected. The result is amazing true-to-source sound with all genres of music.

Teufel Stereoanlage Kombo 62 Berlin
High-quality materials

Solid wooden cabinets with softly rounded corners contain advanced audio technology, the product of Teufel's over 30 years' experience in loudspeaker construction. Rock, jazz or electronic: Whatever you play on these speakers is rendered with incredible transparency and livliness.
Display the Ultima 40 Mk2 with or without grilles. The attractive drivers are one of the stereo towers' main highlights.

Stereo-Lautsprecher Ultima 40 Mk2
3-way system

Over one meter tall, each tower features a 3-way speaker system. Above two 165 mm bass woofers is a 165 mm Kevlar/fiberglass midrange driver in a separate resonating chamber. This premium driver covers the range from 650 Hz to 26000 Hz. A phase plug enhances the system's thermal load capacity and prevents phase shifts from muting any of the playback. A 25 mm tweeter completes the offering with a brilliant but never-shrill treble.

A centre with a rich, full sound

Equipped with 2 midrange drivers in a D'Appolito Array, the centre produces a full and powerful sound. Dialogue in games, television shows and movies is rendered clearly and distinctly thanks to the centre’s strong midrange. You’ll understand every word, even at lower volume levels.

Stereo-Lautsprecher Ultima 40 Mk2 C Center-Lautsprecher Schwarz
T 10 Subwoofer

For the first time Teufel offers a subwoofer that can be used either as a front-firing or down-firing subwoofer. Don't let the 150-Watts fool you. The new Class-D amplifier is highly efficient and produces extremely low-noise like classic amplifiers that consume 300-Watts.

  • First-class active subwoofer, which can be used either as a front-firing or down-firing subwoofer
  • 250 mm diameter woofer
  • Power: 150-Watt, highly efficient Class-D power amplifier with low power consumption
  • Automatic on and off
  • Extensive configuration options and protection circuit
  • Can be tilted forwards or backwards, and feet are adjustable
  • Integrated wireless module - works with Trios, Duett, One, Cinebar/Cinesystem Pro, CoreStation and Impaq, the Onkyo receiver requires the Subwoofer Wireless Receiver.

Included components

  • Center speaker UL 40 C Mk2 (2017)
  • Shelf Speaker UL 20 Mk2
  • Floor Speaker UL 40 Mk2
  • T 10 Subwoofer
  • Onkyo TX-NR676E
  • FM antenna
  • MW frame antenna
  • MW frame antenna
  • 30m Speaker Cable 2.5mm² - C2530S
  • Subwoofer-Cable 2.5m - C3525W

Specifications

Onkyo TX-NR676E
Onkyo TX-NR676E
Download Datasheet: [PDF]
Onkyo TX-NR676E
Connections
Bluetooth Yes
Bluetooth Ja
Cinch input stereo 7
Miscellaneous 1x Special-Eingang für Plattenspieler (MM) optimiert
Cinch output stereo 1
Bass driver output 1
High level speaker outputs 10
Headphone output 3,5mm 1
Video inputs- HDMI 7
Video outputs - HDMI 2
Miscellaneous Verlustfreies Durchschleifen von 4K-HDR Signalen
USB 2.0 1
Playback
Dolby Atmos Ja
Dolby Vision Compatible Yes
Dolby TrueHD Yes
DTS-HD Master Audio Yes
DTS:X Yes
DTS Yes
MP3 Yes
WAV Yes
FLAC Yes
Convert composite -> component Ja
Radio
Radio present Yes
Station memory positions 40
RDS Yes
FM - UKW Yes
AM - MW Yes
Electronics
Dynamic Audio Amplification Yes
WLAN Standards WPA2
10/100-Mbit/s Ethernet Yes
Miscellaneous FireConnect über WLAN ; Chromecast built in, Spotify Connect
Output performance amplifier: Satellites 165 W
Number of zones 2
Power supply voltage 230 volts
Standby-Function Yes
High-Res Audio Yes
Integrated DSP Yes
Remote control Infrared
Dimensions
Depth 37,80 cm
Width 43,50 cm
Height 17,35 cm
Weight 10 kg
Shelf Speaker UL 20 Mk2
Shelf Speaker UL 20 Mk2
Hi-fi bookshelf speaker with two-way construction in a bass reflex enclosure. Excellent bass playback, neutral mids and detailed highs thanks to the 165 mm midbass driver with phase plug along with a 25 mm tweeter. The Ultima 20 MK 2 has a performance capacity of 80 watts with distortion-free playback in rooms up to 25 m².
Shelf Speaker UL 20 Mk2
Speaker
Acoustic principle 2-Way-System
Enclosure type Bass reflex
Continuous power handling (IEC - Long Term) 50 Watt
Peak power capacity (IEC - Short Term) 80 Watt
Sensitivity (2.83 V / 1 m) 84 dB
Minimum amplifier output power recommended 30 Watt
Maximum sound pressure level 104 dB/1m
Impedance 4 - 8 Ohm
Frequency range from/to 70 - 20000 Hz
Crossover frequency internal switch 2600 Hz
Crossover frequency to Woofer (recommended) 80 Hz
Tweeter (number per enclosure) 1
Tweeter (diameter) 25,00 mm
Tweeter (material) Fabric
Bass/Midrange driver (number per enclosure) 1
Bass/Midrange driver (diameter) 165,00 mm
Bass/Midrange driver (material) Kevlar/fiberglass, chrome-coloured phase plug
Enclosure material MDF
Enclosure surface foil
Equalisation openings 1
Equalisation openings (pos.) backside
Removable front cover Yes
Net internal volume 10 Litres
Diameter of the stand screw threads 6,00 mm
Terminal clamps Screw terminals, gold plated
Suitable for banana plug Yes
Maximum cable diameter 4,00 mm
Suitable for AV receiver Yes
Dimensions
Depth 24,00 cm
Width 21,50 cm
Height 33,50 cm
Weight 6 kg
Tower Speaker UL 40 Mk2
Tower Speaker UL 40 Mk2
3-way hi-fi tower speakers. Feature powerful sound and excellent price/performance ratio.
Tower Speaker UL 40 Mk2
Speaker
Acoustic principle 3-Way-System
Enclosure type Bass reflex
Continuous power handling (IEC - Long Term) 120 Watt
Peak power capacity (IEC - Short Term) 200 Watt
Sensitivity (2.83 V / 1 m) 87 dB
Minimum amplifier output power recommended 20 Watt
Maximum sound pressure level 108 dB/1m
Impedance 4 - 8 Ohm
Frequency range from/to 45 - 20000 Hz
Crossover frequency internal switch 650 /2600 Hz
Tweeter (number per enclosure) 1
Tweeter (diameter) 25,00 mm
Tweeter (material) Fabric
Midrange driver (number per enclosure) 1
Midrange driver (diameter) 165,00 mm
Midrange driver (material) Kevlar/Fibreglass membrane, chromium-coloured phase plug
Woofer (number per enclosure) 2
Woofer (diameter) 165,00 mm
Woofer (material) Fibreglass membrane + cellulose, coated
Enclosure material Wood
Enclosure surface Foil
Equalisation openings 2
Equalisation openings (pos.) Back
Removable front cover Yes
Net internal volume 52 Litres
Spikes prepared Yes
Integrated stand Yes
Terminal clamps Screw terminals, gold plated
Suitable for banana plug Yes
Bi-Amping/Bi-Wiring Yes
Maximum cable diameter 4,00 mm
Suitable for AV receiver Yes
Dimensions
Depth 32,70 cm
Width 21,50 cm
Height 106,00 cm
Weight 20,30 kg
Center speaker UL 40 Mk2 (2017)
Center speaker UL 40 Mk2 (2017)
A high-performance centre loudspeaker with a brilliant tweeter and 2 midrange drivers in a D'Appolito arrangement for excellent speech intelligibility and a rich tone with gaming and movies, even at low volumes. The UL 40 Mk2 centre has been precisely tuned to complement the Ultima 40 Mk2. It can be easily wall-mounted or positioned on stand feet.
Center speaker UL 40 Mk2 (2017)
Speaker
Acoustic principle 2-Way-System
Enclosure type Closed
Continuous power handling (IEC - Long Term) 100 Watt
Peak power capacity (IEC - Short Term) 150 Watt
Sensitivity (2.83 V / 1 m) 89 dB
Maximum sound pressure level 107 dB/1m
Impedance 4 - 8 Ohm
Frequency range from/to 90 - 20000 Hz
Tweeter (number per enclosure) 1
Tweeter (diameter) 25,00 mm
Tweeter (material) Fabric
Bass/Midrange driver (number per enclosure) 2
Bass/Midrange driver (diameter) 110,00 mm
Bass/Midrange driver (material) Kevlar/Fiberglass
Enclosure material MDF
Enclosure surface Laminate
Removable front cover Yes
Net internal volume 7 Litres
Integrated stand Yes
Wall mounting brackets Yes
Keyhole plate mounted Yes
Screw hole diameter 6,00 mm
Magnetic shielding Yes
Terminal clamps Gold-plated screw terminals
Suitable for banana plug Yes
Maximum cable diameter 4,00 mm
Suitable for AV receiver Yes
Dimensions
Depth 15,70 cm
Width 42,00 cm
Height 17,00 cm
Weight 6,70 kg
T 10 Subwoofer
T 10 Subwoofer
 High-class active subwoofer, can be used either front- or down-firing
T 10 Subwoofer
Speaker
Acoustic principle 1-Way-System
Downfire Yes
Frontfire Yes
Enclosure type Bass reflex
Maximum sound pressure level 115 dB/1m
Frequency range from/to 33-190 Hz Hz
Woofer (number per enclosure) 1
Woofer (diameter) 250.00 mm
Woofer (material) Aluminium
Enclosure material MDF
Enclosure surface Matte coated
Equalisation openings 1
Integrated stand Yes
Miscellaneous Reflection channel in DPU technology avoids flow noises, stable MDF housing structure with internal bracing
Suitable for AV receiver Yes
Connections
Cinch input 1
Electronics
Lowest frequency (-3 dB) 33 Hz
Bass boost/EQ Yes
Input gain adjustment Yes
Level control Yes
Phase control Yes
Miscellaneous Can be used either front- or down-firing
Amplifier technology Class-D
Amplifier configuration 1.0
Amplifier channels 1
Power output capacity impulse (peak) Bass 150 W
Power supply voltage 230 Volt volts
Standby-Function Yes
Standby-Power consumption 1 watt
Maximum power consumption 150 watt
Mains lead fixed Yes
Safety class 2
Fuse Yes
Storage for settings when disconnected Yes
Automatic on/off Yes
Miscellaneous Wireless subwoofer module integrated (subwoofer with compatible feeders can be controlled wirelessly)
Dimensions
Depth 38.00 cm
Width 35.10 cm
Height 48.30 cm
Weight 15.60 kg

Expert reviews

How our customers rated this product:

Downloads & support

Help regarding this product
Do I also have a 6.1/7.1 playback for a 5.1 recording?
Usually, all 6.1/7.1 AV Receivers can generate a 6.1/7.1 playback from a 5.1 recording. The procedure is comparable with the Dolby Pro Logic Decoder, which generates a matrix circuit from the stereo signal of a centre channel.

The AV Receivers thus generate a rear centre channel from the rear R/L channels of a 5.1 recording through the matrix circuit. The stronger the rear R/L effects on the DVD, the stronger the signal from the rear centre.
Can I connect the LT 4 directly to a DVD player or PC?
No.

The LT 4 is a partially active system that requires AV receiver operation. It has a built-in amplifier that only supplies bass tones in the subwoofer housing That is why an "AV Receiver", i.e. a combination of radio receiver and multichannel amplifier, is essential for using the LT 4.

The subwoofer is connected from the Line In R input to the AV receiver's sub out jack using a mono RCA cable, while the three front satellites are connected to the three speaker outputs of the AV Receiver using the speaker cable and are supplied with power from there.

Connect signal-emitting source appliances such as DVD player or PC etc. directly to the corresponding input jacks on the AV Receiver.
When would it be worth upgrading my 5.1 system to 6.1/7.1 sound?
Naturally 5.1 channel systems that play back all of the sound tracks contained on the DVDs already offer an excellent home cinema experience.

For the new 6.1 or 7.1 sound formats, a rear centre channel is controlled in addition to these channels. This channel, coded in the stereo effect channels, enables the better positioning of effects and music signals directly behind where you are sitting.

If using two speakers for the rear centre channel, the optimal seating position is not tailored to an individually specified position, i.e. you don't have to be seated in the exact centre.

In the following cases we would recommend upgrading to a 6.1 or 7.1 system:

• Your sitting position is not always dead centre, or you often have several viewers

• You have had a 5.1 system for a very long time and would like an improvement

• Your AV amplifier/receiver is designed as a 6.1 or 7.1 receiver and offers the corresponding connection possibilities

• You can also set up one and/or two rear centres. If you are currently building/renovating your house or flat, we would recommend you lay the cables for the additional rear centre channels in any case.

• Modern BluRay players usually issue a true 7.1 surround sound signal at all digital outputs and are thus optimally suitable - presuming the relevant AV Receiver - as a signal transmitter for a 7.1 channel home cinema system.
How do I upgrade my system to a 6.1 or 7.1 sound format?
The choice of speaker(s) depends on the AV Receiver/amplifier. This has an additional power amplifier for one rear centre (6.1) or its two (7.1). You can easily see this by the wattage (e.g. 6 x 100 watt or 7 x 100 watt). To the existing (side) rear speakers for right/left (5.1 technology), one or two additional rear centres are utilised in addition (6.1 or 7.1 technology).

• My AV amplifier/receiver has six connections/power amplifiers (6.1):

In this case we recommend connecting the same centre at the rear that you also used in the front area.

• My AV amplifier/receiver has 7 connections/power amplifiers (7.1):

If you already use dipoles or direct emitters for your 5.1 system, then you have a choice of either supplementing two more dipoles or two direct emitters. For wall assembly and a short distance from the seating location to the rear wall (less than 1.00 metres), we would recommend dipoles. As soon as you want to set up the speakers on bases or on a shelf, then direct emitters would be the better choice.

Information:
Even if the AV Receiver/amplifier only has the connection and power amplifier performance for one rear centre, it is still possible to connect two instead of just one speaker through series connection.

Exception:
• The AV amplifier/receiver has seven connections/power amplifiers, but I can only set up one rear centre. As the 7.1 AV amplifiers/receiver also offer the option of operating just one of the two outputs (usually can be set in the speaker set-up!), you can also only connect just one rear centre.

Here we recommend connecting the same centre to the rear that you also used in the front area. For short distances to the listening location (less than 1.00 metres), a dipole would be the better choice - especially if you are also using dipoles at the sides.
Is it a problem if the speakers are at different distances to where you are sitting?
Since the distance and volume of every individual speaker can be adjusted for the digital home cinema receivers, asymmetrical set-ups can be easily compensated. 
How do I equalise my home cinema system with the help of a sound level meter?
Take the level meter with you to the listening position and point the measuring device directly towards the front centre speaker. Now start the sound generator of the receiver (or of the sound card or DVD player) and equalise all speakers in succession to the same level.

The position and alignment of the measuring device should not be changed during this procedure. For a Teufel sound level meter, proceed as detailed in the following:

1. Remove the protective tab from the battery.

2. Set the weighting to "A" - only the "A" position considers the full frequency range during measuring!

3. Set the response to Slow.

4. Set the Range to 70.

5. Start the test noise from your AV device.

6. Change the volume for every individual channel at the AV device so that the level meter shows 75 dB (meaning between +4 and +6).

7. Done!
What is the difference between the 5.1 and 7.1 configuration?
Compared with the 5.1 set, the 7.1 set has two extra speakers for the back rear centre channel.

The 5.1 channel set plays back all sound tracks on DVDs/Blu-rays and creates an excellent home cinema experience.

With the 7.1 sound format, a rear centre channel is also generated in addition to these channels and distributed to two further speakers (the "rear centre"). This channel, which is encoded in the stereo effects channels, allows better location of effects and music signals directly behind the sitting position.

If you use two speakers for the rear centre channel (i.e. installed 7.1 set), the optimum sitting position is not restricted to one specific place, so you don't have to be sitting exactly in the middle and several listeners can enjoy the best sound.
Where is the optimal place for the centre of my Lautsprecher Teufel Surround System in a 5.1/6.1/7.1 configuration?
Because the centre plays back spoken dialogue, this speaker must be positioned as centrally as possible under or over the TV/monitor or the screen.

If the centre is placed outside the area of 40 centimetres to 1.20 meter height, it should be slightly inclined or angled towards the listener.


Which speaker cables does Teufel recommend?
For smaller sets up to Theater 1, we recommend using the 2.5 mm² Teufel speaker cable for optimal sound quality if the required length does not exceed 15 metres.

For Theater 2 and larger systems, we recommend the Teufel cable with 4 mm² cross-section for the front/centre speakers, and the 2.5 mm² cable up to a length of 15 metres for the effect speakers.

Choose a higher cross-section for even greater lengths.
Can I order the Teufel speakers in different colours than those offered?
To realise the very reasonable sales prices usual for Teufel, it is not possible to offer the speakers in a multitude of housing designs.

This circumstance would drive up the production and storage costs, which would result in a significantly more expensive sales price.

A paint shop in your vicinity will surely be able to repaint the speaker housing to your preferred colour without loss of warranty - after expiry of the eight-week right of return.
Which cables do I need to connect a Teufel speaker set to the AV Receiver?
A home cinema system needs speaker cables to connect the satellite speakers to the receivers, and an NF mono RCA cable to connect the active subwoofer to the sub out socket of the AV Receiver.
Is it possible to combine speaker cables with different cross-sections?
To supplement missing cable lengths you can use speaker cables of differing thicknesses without acoustical differences - provided there are no extreme differences in the cross-sections.
Should I rather choose a fully active or a partially active speaker set?
It is compulsory to connect partially active systems to an AV Receiver. This supplies the five to seven satellite speakers with the necessary power. Only the subwoofer works additionally with its own amplifier. The investment in a new system is higher because of the AV Receiver, but the solution is also much more flexible. After all, you can connect several signal sources, such as a TV, satellite receiver, PC, game console and MP3 player to an AV Receiver at the same time.

Fully active set do not necessarily need an AV Receiver. The five to seven satellite speakers here are supplied with power by the amplifiers which are installed in the subwoofer in addition to the subwoofer power amplifier. This saves you the costs of a receiver, but it is usually only possible to connect one source to our fully active subwoofer.

Exceptions here are the Concept E2, the Concept E Magnum Digital, the Motiv 5 Digital, the Concept F, the LT2+R and the Concept S+R.

Naturally you can also equip the fully active systems with an AV Receiver at a later point. The connection is then equal to the partially active sets.
When can I use the rear speakers as direct speakers?
If you aren't able to position the speakers close to the wall as described above, you should use the them as direct speakers. For this purpose the rear switch should be tipped outwards. For use as direct speakers, the rear boxes should be set up to the left and right of the listening position - ideally at the same height, e.g. on a shelf or preferably on a base. If the speakers have to be set up so that they are much higher or lower, it may be advisable to align them to the listening point. For wall mounting it is best to use wall brackets that allow for vertical movement. When using the speakers in direct speaker mode, we recommend that the distance between the two rear speakers exceeds the listening position by 1m. But if you (have to) sit closer, please make sure that the front of the speaker is not pointing directly at you; instead, angle the speakers more into the room.
Can I set up the set in a different way to that described?
The recommended set-up information below represents the best possible arrangement for perfect multichannel playback in your home. Your available space, your partner or your furniture may not always allow you to arrange the speakers in the ideal manner. Try to meet as many of the requirements as possible.

Modern AV Receivers offer numerous options for compensating electronically for any compromises in the set up. Generally speaking, the following rule always applies: you can always use our recommendations as a basis for experimenting with what works best for you, acoustically and optically. Let your ears (and eyes) decide!
My Bluetooth speaker produces a lesser quality sound with my Windows PC or laptop.
It could be that the speaker is connected as a device with speakerphone function. Please go to: settings menu > devices and printer > BOOMSTER (or other Bluetooth device). Right click on the device and remove the check mark next to the “speakerphone” option.
I want to save a Chromecast stream on the direct selection keys (not applicable to all devices). How can I do this?
For technical reasons, it is not possible to store Chromecast streams on the direct selection keys.
One advantage of streaming with Chromecast is that you can continue to use your usual music app. How can I check if my apps already support Chromecast?
Chromecast built-in already supports 100+ apps, including many popular music services, and works with the Chrome browser. You’ll find an exact overview of all Cast-enabled apps here:

https://www.google.com/intl/en_us/chromecast/built-in/apps/

Tip: If you didn’t find your app on this list, you may want to contact the provider directly and ask when Chromecast will be integrated. In the meantime, you should have no trouble finding an alternative from the large selection of Chromecast-enabled apps.
Ich habe eine eigene Sammlung von Musik mit hoher Qualität und möchte diese über eine Chromecast unterstützende Musik-App abspielen. Wieso werden mir die Titel nicht anzeigt?
Chromecast built-in can stream CD-quality audio up to 48 kHz. If your collection has a higher sampling rate, you can stream it via the Teufel Raumfeld App.
I also want to use Chromecast's multi-room function and stream to multiple speakers at the same time. How can I do this?
Multi-room streaming is also possible with Chromecast. To do this, create a grouping of speakers within the free Google Home app which you will need to install on your smart device. You can name created groups on the app.

After you create and name your groups, they will appear alongside individual Cast-enabled speakers in your music app.

Google Home App (Play Store)

App Store iOS
I use the Spotify app to stream to my speakers. I don't see any or not all of my Chromecast speakers under "Available devices". What could be the reason?
In order to stream with Chromecast built-in, you’ll need the most recent version of the Spotify App. We recommend updating your app and trying again. Please note that you will also require a Spotify premium account in order to stream to your speakers.
I like watching YouTube videos. Can I now use Chromecast to wirelessly output the sound of YouTube videos while watching them?
The wireless transmission of audio content from YouTube is possible with the following:

1: A computer running on either the Windows 10/8.1/8/7 32 bit, Mac OS X 10.9 (or higher) or Linux operating systems.

2: A current version of the Chrome browser. You can download the most recent version here:
https://www.google.com/intl/en/chrome/browser/desktop/

3: The Chromecast built-in extension for the Chrome browser (if not already integrated)

4: A least one Teufel Streaming device with Chromecast built-in registered to the same Wi-Fi network as the computer using the Chrome browser

Begin a YouTube video. Select the “streaming” option from the “more” menu in the Chrome browser. This will call up a menu displaying all Teufel Streaming devices in the network that can play back the audio.

Restrictions:
  • The video displayed on your screen and audio from your speaker may not be in perfect sync.
  • It is not currently possible to directly cast audio from the YouTube app for iOS or Android.

Tip for Android users: You can stream audio from the YouTube app on Android devices using the Android mirroring function. To do so, simply complete the following steps:

Step 1: Install the “Google Home App” and open the menu on the left side.

Step 2: Tap on the option “Screen/Audio streaming” and select the Teufel Streaming device you wish to cast audio to. An active connection will be displayed in your smartphone’s status bar.

Unfortunately, this option is not currently available for smart devices operating on iOS systems.

Step 3: Switch back to the YouTube App and start a video as you normally would. The audio will play from the Teufel Streaming device you just selected.

Please note that the picture and audio may not be in perfect sync.
Ich streame Musik direkt aus dem Chrome-Browser. Die Wiedergabe ist jedoch manchmal verzerrt oder setzt kurz aus. Was kann ich dagegen machen?
The most frequent cause of distortion and drops in playback is insufficiently fast data transfers from the PC to the WiFi speaker. Data transfer rates can be affected by the WiFi router and the internet connection. We recommend enhancing the performance by increasing the WiFi signal strength in the vicinity of your PC and speaker.
Ich verfüge über eine sehr große eigene Musiksammlung. Seit ich das Update mit Chromecast built-in durchgeführt habe, reagiert das System öfter nicht. Was kann ich dagegen unternehmen?
The processing of a large number of music files requires Teufel Streaming system resources. This is normal and comparable to a computer that has multiple programs running at the same time. For most music libraries, this does not pose a problem. For exceptionally large libraries, however, such as those in the terabyte range, the system might be strained to a point where normal streaming is compromised.

Solution: Restart all Teufel Streaming devices and deactivate Chromecast built-in.
Der Stream auf meine Teufel Streaming Geräte über Chromecast beginnt erst nach langer Wartezeit oder startet gar nicht. Woran kann das liegen?
There are many possible reasons why your music stream doesn’t start or only begins after a long delay. The following are the most common causes:

1) Chromecast built-in functionality can vary between providers. It’s therefore important to abide by the instructions given by the provider for using this technology. For instance, some request that users first cast and then start an audio stream while others recommend the reverse order of actions. If you are unsure whether you are casting correctly, please ask your app’s service team for assistance.

2) It can take around 20 seconds or even longer in some cases for a stream to be processed. Contact the provider of the music or audio service you use to learn more.
How can I tell if my Teufel Streaming/Raumfeld devices are compatible with Chromecast built-in?
Chromecast is supported by Teufel Streaming / Raumfeld devices which have a Raumfeld logo on the front panel and no external Wi-Fi antenna on the rear panel. Chromecast is also supported by the Raumfeld Soundbar / Sounddeck and the Teufel Sounddeck Streaming / Teufel Soundbar Streaming.
How must I set the impedance selector switch of my receiver for Teufel speakers?
Here is more detailed information from the AUDIOVISION trade magazine (Issue 4/03) on the subject of impedance settings of the AV Receiver:

Actually, it should be quite simple: Connect the speaker cable to the amplifier and speakers with the correct polarity and you're done. Unfortunately, many manufacturers of home cinema receivers put stumbling blocks out for the users in the form of specifications on the rear of the device and/or in the operating instructions. These usually look like the following (translations): Minimum connection impedance six ohm! Or, speaker impedance six to eight ohm. And what is the problem? There are hardly any six ohm and only a few eight ohm speakers available in Germany. Most of the speakers sold in Germany have a nominal impedance of four ohm. So theoretically, you shouldn't connect them to most of the receivers and amplifiers.

To explain why it is possible after all, we would like to briefly explain the electrical engineering principles: The impedance of a speaker is nothing other than its electrical resistance which it puts up against the flow of current.

• Low resistance = high current
• High resistance = low current

Important to know for operation with an amplifier is that the impedance is not the same for all frequencies but can, for example, change between 50 and 200 hertz by 50 percent. So it isn't entirely correct to speak of impedance for a speaker per se, rather one must always consider the behaviour across the entire range between 20 and 20,000 hertz. To still achieve a reasonable connection value for amplifiers (which, by the way, says nothing about the output impedance of the amplifier itself but rather only which impedances may be connected to it), the creators of the DIN Standard have applied the following stratagem: Only the minimum value of the impedance in the audible range is decisive for the nominal impedance value. This is where the most current flows and the amplifier is subjected to the highest load. Speakers with eight ohm nominal impedance may only exhibit a minimum of 6.4 ohm, and those with four ohm nominal impedance 3.2 ohm. Six ohm are not defined in the DIN (which is applied internationally), but one could use the above values to interpolate that they may exhibit a minimum of 4.8 ohm.

From the definition it is apparent that the nominal impedance is only a rough benchmark, because it says nothing about how the entire course of the impedance looks. No matter whether it only reaches less than 6.4 ohm at one point and is otherwise beyond that, or if the impedance moves close to 3.2 ohm across the entire range, but does not drop below that. The last speaker is surely much more stressful for the amplifier, but has just a nominal impedance of four ohm as the other higher ohm one.

Conventional speakers usually exhibit one to two minima in the bass range, and there is one frequently in the treble range. These minimum values are usually not especially broadband. Aside from the minima, the impedance is usually far higher than the nominal impedance. The amplifiers are really stressed in the bass range because firstly, this is where the most energy is for music and especially the home cinema sound, and secondly, they have to let the most current flow through the impedance minima here.

And lastly, the main reason why many manufacturers don't want four ohm speakers to be connected: In extreme cases - for deep frequencies of consistently 3.2 ohm - the amplifiers in multichannel operation become very hot. A lot of current also means a lot of power loss and thus at lot of waste heat. However, much has to come together before that happens - namely high performance for a longer period of time and setting up the device without sufficient ventilation.

But this extreme case is seldom met in practice. As mentioned above, most of the speakers are not as critical by far, and it is extremely rare to listen to an exorbitant volume for a longer period of time. That is why it is not a problem from a technical point of view to connect speakers with four ohm nominal impedance to all modern home cinema amplifiers and receivers.

However, there is one small catch: The question of warranty. Should a defect occur to the device - which doesn't even have to do anything with the speakers - and the manufacturer notices that four ohm speakers were connected despite the specifications to the contrary, he could refuse repairs due to improper use. As discussions with manufacturers and distributors have shown, this is highly unlikely because they are also aware of the problems.

And for purely legal reasons, Lautsprecher Teufel may not give you a warranty either that your amplifier or receiver will tolerate four ohm speakers. We can only pass along one experience: For several years, the listening tests of the trade magazines are done exclusively with four ohm speakers, and not a single defect has occurred as yet even though the devices are driven to their limits. Also, the performance of each device is usually measured at four and eight ohm irrespective of the specifications of the manufacturers, and the load here is also considerable. It has been a long time since measurement laboratories have seen failures due to to low load impedance.

There are still some special cases, which should be briefly mentioned: Amplifiers/receivers with impedance switches give cautious natures the possibility to stay on the safe side under all possible conditions, even with the warranty. The four ohm setting of the corresponding switch reduces the supply voltage of the power amplifiers so much that excessive heat cannot occur even under unfavourable circumstances. However, the maximum power is then reduced somewhat.

During the listening tests of the trade magazine, these devices are always switched to the "eight ohm" setting to tease out the maximum performance reserves. A defect here has yet to occur. When choosing devices, take a close look because there are devices that only permit speakers with a minimum of six ohm despite the impedance selector switch, like the Pioneer VSX-D2011, for example. This is remarkable in another respect: It possesses a THXSelect license. This license is only issued if certain measured values are complied with that are determined at four ohm for at least the front and centre speakers.

If the THX laboratory had proceeded according to manufacturer's specifications, the VSX-D2011 would never have received a licence, as it would not have been permitted to perform the necessary measurements. By the way: this is also the case for other THX Select devices. But you needn't worry here: The THX logo not only offers additional security, but also a good lever should a manufacturer once refuse a warranty.

The AUDIOVISION TIP

Overheating is the main problem that can occur through the combination of four ohm speakers with power amplifiers that are not released for this.
Therefore, in case of doubt:

• Always set up the AV Receiver or amplifier in well ventilated places and never in a closed housing or close to the heater.

• Occasionally check the temperature of the device.

• Reroute the bass elements via set-up at the subwoofer, if possible.
Can I operate Teufel speakers with an amplifier with 6 ohm outputs?
Without problem!

The fact that some amplifier manufacturers give corresponding information is founded in the VDE standard. To comply with this standard, the devices may not become hotter than 40°C above room temperature so that no one is injured when touching the amplifier.

These 40°C are only reached in the threshold range, meaning for very great volumes for a longer period of time. There is no danger of overloading the amplifier during normal operation. The higher temperature that occurs when connecting 4 ohm speakers will not damage the device in any way. Therefore you can connect 4 ohm speakers without reservations.
I would like to connect the appliance to a record player, is that possible?
In principle, yes.

However, for a record player an additional phono preamplifier is required - these are available from specialist retailers for around €50.
What are the technical requirements for an AV receiver to function with RearStation 4?
The AV receiver must be able to send signals to the rear channels via a pair of cinch terminals. Generally these terminals will be identified as Side, Rear, or Left/Right. It is often also possible to "activate" channels on specific terminals by means of the AV receiver menu.
Can I also connect a 6.1 speaker system to a 7.1 AV Receiver?
No problem.

A 7.1 AV Receiver merely provides the possibility of utilising a 7.1 speaker system; it is not, however, a mandatory necessity.

That is why you can only use a 6.1 speaker system with the 7.1 AV Receiver. In the "Speaker Set-up" menu of the receiver, you frequently only need to specify which of the two channels will be addressed as rear centre.
Kann ich Spikes an die Ultima 40 Mk2 montieren?
Ja. Verwenden Sie dazu unsere Satelliten-Spikes. Auf der Unterseite der Lautsprecher-Bodenplatte befinden sich bereits entsprechende Gewindebohrungen.
Was für Lautsprecherkabel empfiehlt Teufel?
Wir empfehlen Ihnen Lautsprecherkabel mit einer Querschnittsfläche von mindestens 2,5 mm² bei größeren Längen auch 4 mm². Achten Sie darauf, dass linkes und rechtes Kabel immer gleich lang sind.
What is the advantage of bi-amping/bi-wiring?
Bi-amping means that the speaker can be operated by two amplifiers at the same time, or by a bi-amping-capable AV receiver. This enables the different chassis (for the treble mid-tone and bass range) to be individually supplied with one signal. Among other things, this could increase the sound performance of a speaker.

Bi-wiring states that the corresponding speaker can be controlled at the same time with two different speaker cables, meaning via separated input sockets for the treble and mid-tone range on one hand, and for the bass range of the frequency switch on the other. This could improve the sound even more. Bi-wiring is the prerequisite for bi-amping.
My subwoofer is humming. What can I do?
This hum can be caused by the connected devices or disruptions in your electricity current. Please do a test to see which it is.

1. Remove the RCA cable from the input on the subwoofer. If the hum is no longer heard, go to point B. Otherwise, follow point A.

A. Attach the net cable of the subwoofer to another electricity outlet (i.e. Kitchen/Bathroom/Bedroom). If the subwoofer still hums, get in contact with our Support team.

Should the hum no longer be there, the disruption was a problem in your power supply, which can, for instance, be caused by dimmers or chargers. To find out where the disruption is, unplug all your devices and work back from there. As soon as the hum is heard, you now know your source of the disruption.

B. In your case, the "ground hum" is responsible for the disruption. Please proceed as follows to discover your source.

  • Disconnect the cable or satellite port from the TV Receiver and check if the hum disappears or not. If it does, you can use a sheath current filter for the cable outlet to prevent this. For example, the sheath current filter AC 9022 ED. If you have a satellite connection, connect the Satellite Receiver to the optical cable playback source - Teufel Optical Digital Cable

  • If this reason can be excluded, separate all devices from the AV Receiver one at a time until the hum stops. The last connected device is then your hum source and should be separated from the others using a galvanic separation filter (found in a retail shop)

  • If this doesn't work, get in contact with us once again so that we can give an individual, helpful response.
Will an active subwoofer only run in 5.1 mode or also in stereo mode?
Thanks to the speaker set-up/bass management integrated in the home cinema receivers/amplifiers, the subwoofer functions in stereo, Dolby Surround and digital mode.

The corresponding setting in the speaker set-up must be adjusted individually for each source for many receivers, however, e.g. for CD playback only front without woofer, and front speakers plus woofer for Dolby Surround video playback.
Why doesn't my active subwoofer switch on automatically?
Some AV Receivers/amplifiers issue the bass signals via the subwoofer pre-amplifier output so quietly that the subwoofer does not start automatically.

To make sure the subwoofer switches on and off correctly in automatic mode, (to be selected on the corresponding switch of the subwoofer, such as "Auto / On / Off"), we recommend turning the level control on the subwoofer to 1/3 or perhaps to 1/2 and increasing the output level for the sub in the receiver's speaker set-up – sometimes up to the maximum (+10 dB or +12 dB). The subwoofer should then work perfectly.

The maximum position of the output level in the speaker set-up of the AV Receiver is obligatory for some of our models (e.g. the Concept S subwoofer).
How do I connect my fully active Teufel system to an AV Receiver?
Although designed to be fully active, the Teufel set is also partially active in conjunction with an AV Receiver.

You can connect it like a standard speaker system: the five satellites via speaker cable to the corresponding speaker outputs front R/L, rear R/L and centre of the AV Receiver/amplifier and the subwoofer from the front R input via a mono-RCA cable to the Sub Out output on the A/V Receiver/amplifier.

Please note:
The auto on/standby switch only responds when the front R input is being used! The subwoofer also receives the full subwoofer signal via this channel.

If the AV Receiver/amplifier has preamplifier outputs for all channels (front R/L, rear R/L, centre and subwoofer), the Teufel set can also be connected via three RCA cable pairs to the subwoofer and the satellites via speaker cables to the subwoofer. However, we recommend using the first version.
What is a ground hum?
The hum (50 Hz) comes from the 220 volt supply network and is caused by current power flows through the protective conductor. These so-called "ground hums" is caused when you connect two devices that are already grounded on the protective conductor (subwoofer) or the antennae cable (AV Receiver) to the subwoofer cable.

Solution:
Separate the direct connection by a grounding filter for the antennae cable that is created for it - for instance, the Teufel modell sheath current filter AC 9022 ED. Alternatively, you can use a galvanic separation filter that is looped into the connection between the subwoofer and AV Receiver.

The hum disappears if the antennae cable is separated from the Receiver/Tuner/TV. First try the grounding filter, otherwise the galvanic separation filter.
Where is the optimal place for the subwoofer of my Lautsprecher Teufel Surround System in a 5.1/6.1/7.1 configuration?
The location of a subwoofer with a recommended cut-off frequency of under/equal to 120 Hz can be freely selected and does not affect the other speakers.

Placement within the straight line between both front satellites is ideal - but not precisely in the corner of the room because certain frequency components could be unpleasantly excessive when played back.
How do I determine the right phase setting of the subwoofer?
By setting the phase, you can affect the point at which the membrane of the subwoofer bass speaker moves to the front. This setting makes it possible to optimally adjust the subwoofer to the satellites.

The membranes of the satellites should move to the front at the same time as the membrane of the subwoofer bass speaker, because all speakers of the system must vibrate in phase for optimal playback. This means that (provided the connection has the correct polarity) all drivers must move in one direction when the three front speakers receive a pulse (towards the outside or towards the inside).

If the subwoofer is in line with the front speakers, its bass speaker should have the same direction of movement (phase) - the controller on the woofer is set to "0". If the subwoofer is not between the front speakers, but is to the side of or even behind the listening location, its phase length will not match that of the front speakers. That is why the phase of the subwoofer must be changed in such cases.

So much for the theory. In practice, this means: Listen to a loud piece of music with heavy basses and ask a second person to change the phase during playback. The correct setting of the phase switch depends on where the subwoofer is positioned in the room. The position where the bass playback (above all the upper bass range) sounds the fullest is the correct position. Have fun trying it out!
What is the use of the on/off automatic switch ("Auto On/Off") of the active subwoofer?
The On/Off switch is a power-saving standby switch. The switch must be set to "On" or "1" to activate the standby. The subwoofer is activated as soon as it receives a strong bass signal. After approx. ten to twenty minutes of no signal, or only after receiving a very weak signal, it automatically switches to the standby function.

Even though the LED is still illuminated, the subwoofer is in standby mode. This function can be easily checked by slowly increasing the volume at the receiver/amplifier. You will hear a quiet popping noise when the subwoofer activates itself as of a certain level.
What happens to the power amplifiers of the subwoofer if I don't connect the satellites?
As soon as the satellites are connected to the subwoofer and not to the AV Receiver/amplifier, the performance of the 6 or 8-channel power amplifier is distributed to the subwoofer and to the satellites.

If the satellites are not connected directly to the subwoofer but to the AV Receiver/amplifier via speaker cable instead, the subwoofer performance will increase somewhat; the power amplifiers for the satellites have no function. This enables the subwoofer and satellites to play even more dynamically than if the subwoofer still had to provide the satellites with performance.

The technical background: The subwoofer has a large transformer with a specific wattage. This performance is either distributed to the five satellites and the subwoofer, or you receive a higher performance only for the subwoofer.
How can I connect an additional active subwoofer?
If your receiver has only one subwoofer output ("Sub Out"), you only need a monocinch cable, which is then connected from the receiver to the "Sub In" of the subwoofer. With two subwoofer outputs, you can order a so-called Y-adapter from the Teufel accessories page, which has a cinch plug on one side and two cinch (RCA) sockets on the other. Connect the plug to the subwoofer "Pre Out" on the AV receiver/amplifier and connect the mono cinch cable to the two subwoofers.

If the cabling method is easier for you, then you can alternatively connect one subwoofer to the other. You will need two mono cinch cables - one to connect the subwoofer "Pre Out" on the AV receiver/amplifier to the left line-in input of the first subwoofer, and the other to connect the left line-out output of the first subwoofer to the left line-in input of the second subwoofer.
What's the deal with the so-called bass traps or bass absorbers?
These are usually cubic wood housings (same MDF material as the speakers) with a bass reflex opening that have no membranes and are tuned to a certain frequency (e.g. 40 Hz as for a subwoofer). The frequency to be co-ordinated can be changed by the length and diametre of the bass reflex channel. If, for example, a room has a room resonance frequency of 28.3 Hz and this frequency is also played back in addition by a speaker/subwoofer, the room will begin to resonate at this frequency. This particular frequency is played back amplified.

This can be imagined as droning or booming, which occurs during heavy bass movie scenes such as explosions or certain types of music (Jazz, pizzicato bass). The bass absorber is then tuned exactly to this frequency so that only the speakers/subwoofer play back this frequency. The resonance frequency from the room, which would amplify this frequency, is swallowed by the bass absorber.

If you would like to damp more than one frequency (a room usually has three different frequencies: ceilings and floors, front and back and left and right, and its multiple), you will have to set up three absorbers accordingly.
How is the wattage of a subwoofer with respect to the sine wave and pulse/music performance?
Mono subwoofer:

The wattage (e.g. "360 W") printed on the rear of the subwoofer near the mains plug designates the ability of the power amplifier "to pull" a maximum power rating in the specified range at the moment of switching on (those 360 watt stated as an example).

Consequently, the wattage must correspond to at least the sine wave output of the amplifier, as this sine wave output must be permanently available which the power pack must provide as well.

The pulse/music performance of the amplifier, on the other hand, can exceed the wattage, because the short pulses are buffered additionally by the capacitors in the power pack and are not achieved solely through the performance of the power pack.

Multi-channel subwoofer:

The wattage for a multi-channel subwoofer can also be below the sine wave output, as the specified sine wave output is not requested from every channel at the same time.

For a 5 x 100 watt sinus power amplifier, for example, each of the five channels is able to implement 100 watt sine. However, not all five channels at the same time! This is also unnecessary, as the same signal is never transmitted across all five channels at the same time, thus requesting the same high sine wave output per channel.

That is why the wattage may be, e.g. 300 watt, even if the sine wave output exhibits 5 x 100 watt (= 500 watt).
What are the volume switches for?
The sound of the speaker always depends on the room where it is located.

The volume of the active subwoofer can be controlled so that you can adapt the relationship between the active bass and treble / mid tones to suit the room.

Use your own senses to judge which settings sound best in your room. This switch is especially useful in stereo mode. On the other hand, multichannel amplifiers often have technologies that adjust the subwoofer volume - so when using a multichannel amplifier the controller should first be set at 0dB.
Which subwoofer cables does Teufel recommend?
Dans la mesure où dans un ensemble home cinéma les caissons de basses actifs sont connectés à la sortie Out du caisson de basses du récepteur AV, un câble supplémentaire pour la connexion des enceintes satellites est nécessaire. Pour les caissons de basses actifs nous proposons deux versions de câble mono RCA NF allant de 2,5m jusque 5m. Du reste, un adaptateur Y est également disponible dans nos accessoires. Le modèle „ 2 x mâles 1 x femelle“ permet un usage complet des entrées Line-In RCA droit et gauche au caisson de basses. Ainsi, la puissance du caisson de basses s’en voit augmentée. Le modèle „1 x mâle 2 x femelles“ permet la connexion de deux caissons de basses. Une sortie caisson de basses Pre-Out du récepteur se trouve en sommes doublée.
What is room resonance frequency?
Room resonance frequency (other terms: room modes, standing waves, resonance frequency) is the frequency at which the vibrations of a voice, a musical instrument or a signal played back over the hi-fi/home cinema system is amplified unnaturally, because the vibrations build up between the walls as well as the floor and ceiling.

It is calculated of the sound velocity divided by 2 and divided by the room length [ 340 m/s: 2 : 6 m = 28.3 Hz (=1/s) ] or, more simply: 170 divided by the room dimension (length, width or height). The greatest distance between two parallel walls is taken as first standard value. For a room of 4 x 6 metres, this would be 6 metres. Strictly speaking, you would have to calculate the room resonance frequency for further parallel walls (for the 4 metres and for the ceiling height).

Overlaying resonances are also possible if the room dimensions are very close to each other. (2.8 metres high, 3 metres wide and 5.6 metres long). The resonance at 2.8 metres is repeated as multiple (times 2) at 5.6 metres length, the resonance of the 3 metres width is close to the resonance of 2.8 metres. It would resonate strongly here at 30 Hz, 56 Hz, 60 Hz and 120/112 Hz.

Phenomena of resonance frequencies:

• For example, a man with a deep voice speaks in a very small room (2 by 2 metres, 85 Hz). The voice appears to have more emphasis than in another room or out of doors. As soon as a woman speaks, the voice will sound just the same as in another room.

• The voice of a woman or that of a small child will cause glass to shatter. The voice strikes exactly the tone that corresponds to the resonant frequency of the glass. The glass resonates so strongly that it shatters (refer to the movie "The Tin Drum").

• A group of soldiers march across a bridge in cadence. The equal movement causes the bridge to vibrate so much that it collapses. That is why no one marches across bridges in cadence.
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