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Cubycon Power Edition

Big on the inside
High-end home cinema set with discrete satellite speakers and a powerful subwoofer
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€ 1,299.99 € 1,124.99
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Highlights

Why we love this product
The new Cubycon is an attractive little surround sound set with surprisingly big sound. Expect high, distortion-free levels, thrilling effects and clear details, all from an easily placed and extremely stylish little speaker system. The Power Edition comes with a powerful T 10 subwoofer for extra bass.
Key advantages at a glance
  • High-end home cinema set with discrete satellite speakers and a powerful subwoofer
  • 2-way micro satellites with coax drivers fashioned from premium aluminium
  • Neutral playback, excellent localisation of effects & surround sound with excellent speech intelligibility
  • Can be placed horizontally or vertically on a shelf, on the wall or on speaker stands
  • Powerful T 10 subwoofer, can be used either front- or down-firing, optional wireless function
  • Universally compatible with all standard A/V receivers, available in black or silver
  • High-performance subwoofer can be placed upright or on its side
What others are saying about us
(4.5 of 5 from 6 Reviews)
All ratings
Features

Overview of our technologies

Downfire
Power Edition
An unobtrusive and elegant sound system with 2-way aluminium micro-speakers. The Power Edition also comes with a powerful T 10 subwoofer for extra bass.
High-end satellite speakers

Aluminium enclosures were enhanced with an anodised surface for an elegant finish. The original cloth covers of the Cubycon satellites were also replaced by subtly convex aluminium grilles.  This design has both better acoustic permeability offers improved driver protection.

The centerpiece of the Cubycon, its clever coax driver technology, was completely re-worked and improved through a series of extended listening tests. The result: Even more neutral playback, more details and a higher efficiency rating (90 dB at 2.83 V/ 1 m) as well as a high, distortion-free maximum level of 100 dB/1 m.

Each enclosure made from low resonance aluminium contains a coax driver unit specially designed for the Cubycon. This consist of an 80 mm midrange driver with a 20 mm horn tweet positioned directly in front. The two drivers combined a long a single access form an ideal wave guide for the upper range. A separate 80 mm midbass driver is paired with this sonic duo. All three drivers make use of an especially light membrane. The division of the frequency range among three drivers ensures that each driver is perfectly able to play back the range in which it specialises.

The crossover is comprised of only four components. This simplicity means that the signal is converted into sound without any external influences. With the Cubycon, you won’t experience aggressive highs and booming, exaggerated bass. A linear frequency response and neutral playback with movies, music and games is what this system was made for.

Heimkino Micro-Lautsprecher Aluminium Cubycon Teufel 2 FCR Lautsprecher Schwarz
5.1 surround sound

All satellites are equipped with the same drivers. This allows details to be perfectly localised while gaming and creates a feeling of being in the middle of the action with films. The use of wave guide technology creates a sweet spot large enough to include your nearest and dearest.

Integrated mounts allow the satellites to be wall-mounted directly beneath or above a flat screen TV. Placement on a shelf or stand is also possible.

Teufel Cubycon
Installation

Integrated keyhole brackets on the satellite make it easy to mount them on a wall – directly alongside your display, for instance. They can also be placed on the AC 3001 SP speaker stand available separately.

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

  • Satellite Speaker CUB 2 FR 15 (pcs.)
  • Centre Speaker CUB 2 C 15
  • T 10 Subwoofer

Technical Data

Satellite Speaker CUB 2 FR 15 (pcs.)
Satellite Speaker CUB 2 FR 15 (pcs.)
High-end 2-way micro speakers with solid aluminium enclosures.
Satellite Speaker CUB 2 FR 15 (pcs.)
Speaker
Micro Yes
Continuous power handling (IEC - Long Term) 100 Watt
Peak power capacity (IEC - Short Term) 140 Watt
Sensitivity (2.83 V / 1 m) 90 dB
Minimum amplifier output power recommended 20 Watt
Maximum sound pressure level 100 dB/1m
Impedance 4 - 8 Ohm
Frequency range from/to 200 - 20000 Hz
Crossover frequency internal switch 5000 Hz
Crossover frequency to Woofer (recommended) 150 - 200 Hz
Tweeter (number per enclosure) 1
Tweeter (diameter) 20.00 mm
Tweeter (material) Seide
Midrange driver (number per enclosure) 2
Midrange driver (diameter) 80.00 mm
Midrange driver (material) Cellulose, coated
Acoustic principle 2-way
Enclosure type Bass reflex
Enclosure material Aluminium
Enclosure surface Anodised
Equalisation openings 2
Equalisation openings (pos.) Back
Net internal volume 1.20 Litres
Wall mounting brackets Yes
Keyhole plate mounted Yes
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
Connections
High level speaker outputs 1
Dimensions
Depth 9.70 cm
Width 18.80 cm
Height 9.50 cm
Weight 1.40 kg
Centre Speaker CUB 2 C 15
Centre Speaker CUB 2 C 15
High-end 2-way micro loudspeaker made of solid aluminium
Centre Speaker CUB 2 C 15
Speaker
Micro Yes
Continuous power handling (IEC - Long Term) 100 Watt
Peak power capacity (IEC - Short Term) 140 Watt
Sensitivity (2.83 V / 1 m) 90 dB
Minimum amplifier output power recommended 20 Watt
Maximum sound pressure level 100 dB/1m
Impedance 4 - 8 Ohm
Frequency range from/to 200 - 20000 Hz
Crossover frequency internal switch 5000 Hz
Crossover frequency to Woofer (recommended) 150 - 200 Hz
Tweeter (number per enclosure) 1
Tweeter (diameter) 20.00 mm
Tweeter (material) Seide
Midrange driver (number per enclosure) 2
Midrange driver (diameter) 80.00 mm
Midrange driver (material) Cellulose, coated
Acoustic principle 2-way
Enclosure type Bass reflex
Enclosure material Aluminium
Enclosure surface Anodised
Equalisation openings 2
Equalisation openings (pos.) Back
Net internal volume 1.20 Litres
Wall mounting brackets Yes
Keyhole plate mounted Yes
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
Connections
High Level loudspeaker inputs 1
Dimensions
Depth 9.70 cm
Width 9.50 cm
Height 18.80 cm
Weight 1.40 kg
T 10 Subwoofer
T 10 Subwoofer
 High-class active subwoofer, can be used either front- or down-firing
T 10 Subwoofer
Speaker
Maximum sound pressure level [dB/1m] 115
Frequency range from/to [Hz] 37 - 200 Hz
Woofer (number per enclosure) 1
Woofer (diameter) [mm] 250
Woofer (material) Aluminium
Acoustic principle 1-way system
Enclosure type Bass reflex, DPU
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) [Hz] 33
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 [W] 150
Power supply voltage [volts] 230 Volt
Standby-Function Yes
Standby-Power consumption [watt] 1
Maximum power consumption [watt] 150
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 [cm] 38
Width [cm] 35.1
Height [cm] 48.3
Weight [kg] 15.6

Accessories

Accessories and bundle packages are not currently available for this product.

Expert reviews

Cubycon Power Edition review of www.areadvd.de
Cubycon Power Edition review of www.areadvd.de
"Cool aluminium design and brilliant sound"
www.areadvd.de 02/2012
(Note: test report refers to a similar product)

"Elegant, high-quality processing, tremendously dynamic and powerful - Teufel pushes the Cubycon into a new competitive market: the market of compact, design-oriented and extremely high-quality loudspeaker systems. Other Teufel systems before already had nice designs, so there was no big surprise here. But a system that has been rigorously rigged for quality and style had not before been realised in house Teufel. And Teufel wouldn't be Teufel if the sound quality suffered due to go optics: the Cubycon is acoustically brilliant. The elaborate active subwoofer with its three chassis delivers a solid, precise bass, and the identical speakers provide a spatially intense, homogenous and lively performance."
See full review at areadvd.de/hardware/2012/teufel_cubycon
Cubycon Power Edition review of audiovision - Magazin
Cubycon Power Edition review of audiovision - Magazin
"Teufel proves with the new Cubycon set that even very small satellites and a slim subwoofer can sound really good."
audiovision - Magazin 12/2012
(Note: test report refers to a similar product)

"The 2 approx. 9cm-wide CUB FCR satellites are made of low-resonance aluminium and can be hung vertically or horizontally on the wall thanks to the integrated mounting for the surround speakers can be handled with the wireless system RS4, which gives it a special price in conjunction with the speaker set."

"In terms of size, Teufel's mini speakers are amazingly efficient and have an amazingly deep bass response. The satellites play down to 150 Hz and do not drop steeply, thanks to the bass reflex technique tuned to 125 Hz."

"The three bass drivers of the subwoofer are able to take over the tasks of the subwoofer in a direct and precise manner to the listener, so that the low-frequency range is not neglected, Teufel's in-house DPU bass reflex technology effectively supports the three 14-position long-stroke drivers particularly long channel guidance with a large opening, no noise is produced even when the 150-watt class-D amplifier delivers full performance."

Conclusion

"Teufel proves with the new Cubycon set that even very small satellites and a slender subwoofer can sound really good: the mini-speakers are amazingly unbreakable with the sub and sound up to very high levels, dynamic and balanced...] In relation to its size, the set [...] provides a powerful performance, which was a highlight for us."
See full review at audiovision.de
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.


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!
The satellites 'crackle'!
Please disconnect the Teufel speaker system from your PC or other connected devices by unplugging the cable and check whether the “crackling” stops. Try operating the set with a different power source/in a different room (just use an extension cable).

If you can still hear the crackling, please check which satellites are affected by swapping them around and to find out whether the satellite or the subwoofer electronics are generating the excessive crackling. If the "fault" moves with the satellites, the satellite is affected. The subwoofer amplifier electronics may be responsible if you can still hear the crackling.
The satellites "hiss"
In principle the Concept F is a very low-noise system. In the high range area, very high-resolution quality speaker systems can 'expose' the defective quality of a signal source (e.g. from MP3 files or analogue cassette recordings) that is hardly noticeable on lower quality speakers.
You can check the basic noise level by connecting a signal, via a cinch cable, from an external source that is guaranteed to be good quality – such as a music CD e.g. on a portable CD player – to the Aux L/R input on the subwoofer. If all of the satellites are now playing noise-free, it is because they weren't receiving the right signal before. Either the cinch cable is defective (try swapping them around) or the output of your source appliance is not producing an adequate signal.

However, if you continue to hear increased noise on this channel there is possibly a fault in the Concept F. Please check which satellites are affected by changing the satellites around and to find out whether the satellite or the subwoofer electronics are producing excessive noise. If the fault "moves" with the satellite the satellite is the problem. On the other hand, if the hissing remains on the same channel, the subwoofer amplifier electronics are the cause.
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.
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.
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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