Definion 5 Surround
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Highlights
- High-end surround sound speaker set with Teufel's award winning Definion 5
- For an extraordinarily precise sound reproduction with great dynamics and deep bass
- Huge level reserves thanks to a large total membrane surface area
- Patented coaxial drivers for a truly 3 dimensional sound image
- Elaborately braced, trapzoidal enclosure minimizes resonances
- Efficient design for more performance from smaller enclosures
Overview of our technologies
The most striking advance is the improvement of the subwoofer. Despite a two-thirds reduction in the size of its enclosure, the System 8's sub is the only subwoofer in the world to meet the exacting THX Ultra 2 standards with just one high-performance bass driver. A lengthy development process resulted in the extra long-throw woofer with magnetic shielding which is primarily responsible for the incredible performance of the S 8000 SW. The extremely efficient design allows 500 watts to produce very high levels free from distortion (e.g. 114 dB). Sophisiticated Digital Signal Processing (DSP) fine tunes the sound.

No detail, no matter how small, was overlooked in the conception and construction of the Definion 5. The end result is an uncompromising high-end loudspeaker that delivers musical nuances free from distortion with an imposing and powerful sound.
Patented SCA (Synchronized Coaxial Acoustics) Technology offers the best conditions for the realisation of point source sound. After 2.5 years of intense development, an audio quality was achieved that sets new standards for dimensionality, fine tuning and precision. Individual instruments retain their natural clarity, allowing even inexperienced listeners to easily recognize tonal differences in high and midrange frequencies as compared to traditional loudspeakers.
Precision was the guiding principle of this product’s development. All drivers are designed for an amazingly broad range, and the bass drivers achieve astonishingly low cut-off frequencies, allowing you to experience a punchy, clear bass. At the same time, the tweeter’s light membrane can handle peaks without distortion. The Definion 5 is quite simply the slimmest loudspeaker in its class with the strongest bass.
Are sealed enclosures critical to really good bass sound? Many experts would say they are, and we at Teufel are the experts. With the construction of a highly specialized subwoofer chassis on the Definion 5, we’ve taken sealed box design to a whole new level. The advantages of this classic system are well-known: exemplary precision with regard to transient response and the best possible response at high levels with very little distortion, neither of which would be possible with any other type of loudspeaker enclosure. Feel the bass as you would with an additional subwoofer, only clearer and in a sleeker design.


The cabinet cleverly combines a sleek design with acoustic functionality. The exceptionall well-braced trapezoidal shape reduces room resonances and reflections. In addition, an innovative floating baffle prevents the transference of cabinet reflections to the listening position. The curvature of the baffle forms a waveguide for higher frequencies that have a tendency to concentrate more in a vertical direction. This results in a precise and detailed sound within a very wide listening range.

Unlike a conventional chassis, the coaxial principle with a flat membrane produces a wide sound dispersion without a mechanically induced time delay. The crossover was constructed in such a way as to bring this advantage to the fore. An especially broad dispersion angle combined with time-optimised filters produces a very linear frequency and phase response allowing the Definion 5 to deliver an intense listening experience.


Patented SCA technology (synchronized coaxial acoustic) offers the best conditions for approaching the ideal of a point source. After 2.5 years of intense development, a quality of playback was achieved that sets new standards for precision in terms of dimensionality, fine dynamics, and precision. Individual instruments retain their natural sound, and even less experienced listeners will notice the difference between between the Definion and other loudspeakers. Muisc sounds vivid and fully present, like listening to a live concert.
The elegant design combines a slender form with high-end acoustic functionality. A sophisticated reinforced trapezoidal form reduces resonances to a minimum, and an innovative floating baffle prevents enclosure reflections from being transmitted to the listening position. The curvature forms a waveguide for the higher frequencies which have a tendency to concentrate in a vertical direction. A precise sound within a broad listening range is the result. Individual instruments can be pinpointed in the full and rich soundstage that is created and seem almost tangible.

The specially constructed bass driver is able to achieve a very low end in a relatively small, sealed enclsure thanks to a clever design.
The technical features of the bass drivers:
- Generously dimensional driver action with a 1½“ voice coil for the best bass control & load capacity
- Very large linear excursion: X-Max= +/- 8 mm for low distortion with high levels
- Vented voice coil carriers reduce distortion as well as compression effects
- Air-cooled pole piece with double convection channels reduce the risk of wind noises
- Highly stable voice coil carriers made from black fiberglass reduce the loss of mechanical energy for increased dynamics & more precise playback with finer nuances
- Strategically placed aluminium rings homogenize the magentic field and so lessen the dynamic compression effect
- A highly stable die-cast basket ensures highly precise membrane movement at high levels as well as unimpeded heat dissipation
- A light and rigid aluminium and paper fibre sandwich membrane construction effectively reduces partial oscillations
- Low loss suspension design prevents mechanical friction losses for a very low end
An additional technical highlight is a connection terminal that allows for bi-wiring and bi-amping. An optional stand positions the Definion 5S at the perfect height for listening from a typical seated position. The cable can be tucked away inside the stand.

Thanks to almost identical driver construction and tuning, the Definion 5S is an ideal rear speaker to combine with the Definion 5 for surround sound. Together with a Definion centre and optional subwoofer, the Definion 5S creates a very impressive surround system capable of rending music and movie sound that is detailed, balanced, and true-to-source.
Included components
- Floor Speaker DEF 5 F
- Satellite Speaker DEF 5S FCR
- Active Subwoofer S 8000 SW
- power cable
- Definion Speaker Stand
- Baseplate DEF 5S CB
- Baseplate DEF 5S FRB (Stk.)
Specifications

Speaker | |
---|---|
Downfire | Yes |
Enclosure type | Bass reflex |
Woofer (number per enclosure) | 1 |
Woofer (diameter) | 300,00 mm |
Woofer (material) | Cellulose, coated |
Enclosure material | MDF |
Enclosure surface | Lacquer, high gloss |
Equalisation openings | 1 |
Equalisation openings (pos.) | Back |
Net internal volume | 83,70 Litres |
Spikes prepared | Yes |
Integrated stand | Yes |
Magnetic shielding | Yes |
Suitable for AV receiver | Yes |
Connections | |
Cinch input stereo | 1 |
Electronics | |
Lowest frequency (-3 dB) | 25 Hz |
Input gain adjustment | Yes |
Frequency regulator (range) | 60-220 Hz |
Full Range/Low Pass switch | Yes |
Phase control | Yes |
Remote control | Yes |
Amplifier technology | Class AB with DSP |
Amplifier channels | 1 |
Power output capacity impulse (peak) Bass | 650 W |
Power output capacity sinus (RMS) Bass | 500 W |
Power supply voltage | 230 V / 50 Hz volts |
Standby-Function | Yes |
Maximum power consumption | 1200 watt |
Mains cable - IEC connector (non-heating device) | Yes |
Storage for settings when disconnected | Yes |
Display | Yes |
Display color | Red |
Display type | LED |
Dimensions | |
Depth | 70,00 cm |
Width | 36,00 cm |
Height | 54,80 cm |
Weight | 41,70 kg |

Speaker | |
---|---|
Acoustic principle | 3-Way-System |
Enclosure type | Closed |
Continuous power handling (IEC - Long Term) | 250 Watt |
Peak power capacity (IEC - Short Term) | 350 Watt |
Sensitivity (2.83 V / 1 m) | 85 dB |
Minimum amplifier output power recommended | 50 Watt |
Maximum sound pressure level | 104 dB/1m |
Impedance | 4 Ohm |
Frequency range from/to | 42 - 22000 Hz |
Tweeter (number per enclosure) | 1 |
Tweeter (diameter) | 25,00 mm |
Tweeter (material) | Fabric dome tweeter, coated |
Midrange driver (number per enclosure) | 1 |
Midrange driver (diameter) | 105,00 mm |
Midrange driver (material) | Aluminium hexacone kevlar sandwich membrane |
Woofer (number per enclosure) | 3 |
Woofer (diameter) | 130,00 mm |
Woofer (material) | Aluminium papier fiber sandwich membrane |
Enclosure material | MDF |
Enclosure surface | Varnish, satin finished |
Net internal volume | 45 Litres |
Integrated stand | Yes |
Terminal clamps | Gold-plated screw terminals |
Suitable for banana plug | Yes |
Bi-Amping/Bi-Wiring | Yes |
Maximum cable diameter | 6,00 mm |
Suitable for AV receiver | Yes |
Dimensions | |
Depth | 37,00 cm |
Width | 21,80 cm |
Height | 108,90 cm |
Weight | 30,75 kg |

Speaker | |
---|---|
Continuous power handling (IEC - Long Term) | 120 Watt |
Peak power capacity (IEC - Short Term) | 180 Watt |
Sensitivity (2.83 V / 1 m) | 85 dB |
Minimum amplifier output power recommended | 50 Watt |
Maximum sound pressure level | 104 dB/1m |
Impedance | 4 - 8 Ohm |
Frequency range from/to | 65 - 22000 Hz |
Crossover frequency internal switch | 200 / 3000 Hz |
Tweeter (number per enclosure) | 1 |
Tweeter (diameter) | 25,00 mm |
Tweeter (material) | Fabric dome tweeter, coated |
Midrange driver (number per enclosure) | 1 |
Midrange driver (diameter) | 105,00 mm |
Midrange driver (material) | Aluminium hexacone kevlar sandwich membran |
Woofer (number per enclosure) | 2 |
Woofer (diameter) | 130,00 mm |
Woofer (material) | Aluminium paper fiber sandwich membran |
Acoustic principle | 3-Weg |
Enclosure type | Closed |
Enclosure material | MDF |
Enclosure surface | Varnish, satin finished |
Net internal volume | 23 Litres |
Magnetic shielding | Yes |
Terminal clamps | Gold-plated screw terminals |
Suitable for banana plug | Yes |
Bi-Amping/Bi-Wiring | Yes |
Maximum cable diameter | 6,00 mm |
Suitable for AV receiver | Yes |
Connections | |
High Level loudspeaker inputs | 1 |
Dimensions | |
Depth | 31,10 cm |
Width | 22,00 cm |
Height | 61,30 cm |
Weight | 16,40 kg |
Miscellaneous | The centre is 61.30 cm wide. |

Speaker | |
---|---|
Acoustic principle | 3-Way-System |
Enclosure type | Closed |
Continuous power handling (IEC - Long Term) | 120 Watt |
Peak power capacity (IEC - Short Term) | 180 Watt |
Sensitivity (2.83 V / 1 m) | 85 dB |
Minimum amplifier output power recommended | 50 Watt |
Maximum sound pressure level | 104 dB/1m |
Impedance | 4 - 8 Ohm |
Frequency range from/to | 65 - 22000 Hz |
Crossover frequency internal switch | 200/3000 Hz |
Tweeter (number per enclosure) | 1 |
Tweeter (diameter) | 25,00 mm |
Tweeter (material) | Gewebekalotte, beschichtet |
Midrange driver (number per enclosure) | 1 |
Midrange driver (diameter) | 105,00 mm |
Midrange driver (material) | Aluminium-Hexacone-Kevlar-Sandwich-Membran |
Woofer (number per enclosure) | 2 |
Woofer (diameter) | 130,00 mm |
Woofer (material) | Aluminium-Papierfaser-Sandwich-Membran |
Enclosure material | MDF |
Enclosure surface | Schleiflack, seidenmatt |
Net internal volume | 23 Litres |
Magnetic shielding | Yes |
Terminal clamps | Schraubklemmen, vergoldet |
Suitable for banana plug | Yes |
Bi-Amping/Bi-Wiring | Yes |
Maximum cable diameter | 6,00 mm |
Suitable for AV receiver | Yes |
Connections | |
High Level loudspeaker inputs | 1 |
Dimensions | |
Depth | 31,10 cm |
Width | 61,30 cm |
Height | 22,00 cm |
Weight | 16,40 kg |
Expert reviews


Downloads & support
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.
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.
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.
• 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.
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!
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.
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.
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.
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.
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.
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).
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.
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.
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.
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!
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.
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.
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.
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.
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).
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.
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.
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.