User's Manual

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Sub7 Manual / English
All ADAM products are designed and manufactured to the highest quality standards.
However, if any problems with your subwoofer occur, we recommend to proceed as
follows:
6.1 Problem: The LED shows normal operation (green) but there is either no or only
a distorted audio signal.
Check the volumes of both the subwoofer and your signal source.
Check the wiring. Is the cable defective? Are all cables connected correctly? If pos-
sible, check with new cables.
Connect the subwoofer as directly to the signal source as possible (please mind
the volume!). Is another part of the signal path (e.g. mixer, audio source) defective?
6.2 Problem: You hear parasitic noises (like humming, buzzing, soughing,
cracking).
Please disconnect the signal cables. If the noises disappear, check the signal path.
Make sure that all cables are properly connected, especially the signal cable be-
tween the preamp/mixing console/etc. and the sub.
If the noises can still be heard, check for other electrical devices close to the
speakers (mobile phones, switching power supplies, etc.). If there is no interfering
device the subwoofer will probably cause the problem.
6. Troubleshooting
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5.2 Controls on the rear panel
a) Mode
This push button allows you to choose between
• Auto: The subwoofer starts operation as soon as a
musical signal arrives, and stops after 15 minutes
without a signal.
• On: The unit is permanently working.
We recommend the ”Auto” position. It minimises power
consumption and makes handling very easy.
b) Subwoofer Phase
With the Phase Switch you can alter the phase of the subwoofer relative
to the satellites. That means to change the polarity of the bass unit.
Depending on the distance between woofer and satellites, either 0° or
180° may be the better position.
We recommend to try out what position sounds better within your
system.
c) Satellite Filter
The satellites in a system can be driven full range or with a 85 Hz high
pass as recommended by Dolby® laboratories for use in surround set-
ups.
Recommendation: If possible the main signal should go into the
Subwoofer. Connect your satellites to the Subwoofer output, either
via XLR symmetrical or RCA asymmetrical. In many cases, clarity and
dynamic range of the speakers can be improved if they do not reproduce
very low frequencies since they do not have to deliver big amplitudes.
d) Foot Switch
This input jack allows for switching the subwoofer on or off by
footswitch. When you have connected the Input and Output of the
subwoofer with the same type of connectors (either both XLR or both
RCA) the footswitch will also switch off the Satellite Filter, enabling the
satellite speakers to play full range.
5. Controls