Getting connected & set-up

The MusikBass is a passive subwoofer using the RiPol-principle.It is "activated" by an external amplifier module. ModalAkustik offers the TruAudio TRU-S500DSP and the Cornered Audio CA280DSP. The MusikBass is connected to the amplifier module with a regular speaker cable. If you have questions about how to connect the MusikBass to your system, do not hesitate to contact us.


An amplifier module can be implemented in your system in various ways:

Via subwoofer pre-out

If your pre-amp or integrated amp has a dedicated subwoofer pre-out or LFE output, then you can connect the subwoofer module to that output. The type of output can the chinch or XLR.


Practically every surround-receiver/amplifier und every surround pre-amp/processor has a subwoofer pre-out, and also stereo components increasingly do.


Components with integrated lowpass filter (e.g. all surround components) and adjustable volume for the pre-ot do only require a "regular" power amp, not a special subwoofer module (although it might still make sense to use one given the higher adjustment flexibility)

Via stereo pre-out

Every pre-amp has pre-outs that enable the connection to the power amp. These outputs can be available as chinch or XLR, for left and right channel. Also some integrated amps have pre-outs to enable connection to external power-amps.


In case your pre-outs are already occupied by your power-amp, a y-cable or adapter can be used to split the signal in order to connect the subwoofer module in addition to the main power amp.


Attention! The "Tape"-outputs of many older amplifiers cannot be used, because their volume is fixed. That means the volume of the subwoofer does not change when the main volume changes.

Via speaker output

Our amps do not have that option. You need to use a high-low-level adapter, please contact us if you need to use this method.


When using a high-low-level adapter or a subwoofer module with high-level inputs you can connect the subwoofer amp to your speaker outputs in parallel to your main speakers.


Your main amp does not have to work harder using this method, as the subwoofer amp only takes the signal and does not require power (in fact the subwoofer amp has its own power amp).


Using valve amps that is often the only method to implement a subwoofer.

Additional subwoofer amplifiers and active crossover


  • Audac SMA350
  • AudioControl TS500 (mono) and TS1000 (two channel) (exhaustive DSP configuration via web interface)
  • Cornered Audio CA280
  • Dayton Einbauverstärker
  • Dayton SA1000
  • Earthquake XJ-700-DSP
  • Elipson A1000
  • Hypex plate amps
  • Linn Exaktbox Sub
  • minidsp PWR-ICE125 and 250 with PWR-ICE BackBox enclosure
  • Monitor Audio IWA-250
  • PSB CS500W
  • Sonance Sonamp DSP 2-150 MK2 (two channel, exhaustive DSP configuration via web interface)
  • Soundavo PSB-1000DSP
  • PSB CS500W
  • t.amp Quadro 500 DSP
  • TruAudio S500DSP
  • Velodyne SC-1250
  • WHD AMP4200


Separate active crossover (power amp needs to be added):

  • DBX 223 Xs
  • DEQX
  • JL Audio CR-1
  • minidsp Flex Eight
  • Ridtahler subwoofer crossover (analogue)
  • SPL Audio Crossover (analogue)
  • Sublime Acoustic K231 / K235 (analogue)

ModalAkustik offers the TruAudio TRU-S500DSP and Cornered Audio CA280DSP for using with the MusikBass:

Audio components with subwoofer pre-out

Some audio components offer dedicated subwoofer pre-outs. Here we list some of those components. This list is extended regularly. In addition all surround components (via subwoofer pre-out), all pre-amps and all integrated amps with pre-outs are suitable for adding a subwoofer. For all other components a high-low-level converter or a subwoofer module with high-level inputs need to be used.


Integrated stereo amps with subwoofer pre-out:

  • Anthem STR Series
  • Arcam SR250
  • Blusound
  • Cambridge Audio (various models, e.g. CXA61)
  • Classe Sigma 2200i
  • Cyrus 8.2 DAC QXR
  • Cambridge Audio CXA60 und CXA80
  • Elac EA101-EQ
  • McIntosh MTI100 (turntable with integrated amp)
  • NAD (various models)
  • Onkyo A9030
  • Pioneer (various models)
  • Project Stereo Box RS
  • Yamaha (various models)


Active speakers with subwoofer pre-out:

  • Kef LS50 Wireless
  • Nubert NuPro-Series
  • Piega Connect Hub
  • Piega 501 Premium Wireless
  • Triangle Sensa SN 03A

MusikBass set-up

Many subwoofer manufacturers claim that one can position a subwoofer anywhere, in every corner. But in reality it is not that easy! A subwoofer will sound different depending on its position in the room, therefore you need to find the optimal spot.


A general advantage of subwoofers is, that you can position it independent from the main speakers. Because where your main speakers deliver the best imaging is not necessarily the best spot for the bass.


There is no general rule for the optimal position in the room bacause rooms are too different regarding their size as well as nature (thickness of the walls, material of the walls and the floor, furniture etc.). However, there are some rules that should be followed:

  • The subwoofer should be placed not too far away from the main speakers
  • The subwoofer should not be placed directly at a wall or corner. We recommend a minimum distance of 20cm
  • The subwoofer should be placed with similar distance from the listening position compared to the main speakers in order to not ruin the timing (unless you correct the distance electronically via DSP, e.g. within an AV-processor).

A specialty of the MusikBass is the focused radiation of the sound because of the RiPol-principle. Unlike "regular" subbwoofers it therefore does make a difference how you toe in the MusikBass towards your listening position. That means you can affect the sound by using different angles, e.g. towed in towards the listening position or a position parallel to two walls.


Some subwoofer amplifier modules, like the ones ModalAkustik offers, allow adjustments of frequency response and phase. Correctly applied that can be a mighty instrument to adjust the sound, but it does not substitute finding the optimal position. You should follow the basic principle: First find the right position and then make electronic adjustments, if necessary.

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