Q Acoustics Q B12 Manuel Du Propriétaire page 10

Multi-Channel AV System
Play some stereo music you are familiar with and experiment with the PHASE setting and LEVEL
controls until you hear a seamless blend between the front speakers and the subwoofer. If you
can hear the subwoofer standing out it's too loud!
Always bear in mind that the human ear's sensitivity to bass varies enormously with the volume
level, hence the need for a wide range of programme material and sound levels.
Many Home Theatre amplifiers have distance settings which build in a time delay depending on
the distance of the speaker from the optimum listening position; the sweet spot. The location of
the subwoofer is one of the most important aspects of any Home Theatre system, therefore getting
these settings correct will give a significant improvement to the system's overall performance.
Do not adjust to more than +/-0.5m from the original measured distance. If it has not been
possible to discern any improvement in the tone, try swapping the PHASE switch position on the
Q B12 and repeat the exercise. Then re-check the sound with some stereo music again to make
sure an improvement has been noticed.
If the Q B12 is subsequently moved relative to the other speakers reset the amplifier's subwoofer
distance setting to the new value and repeat the exercise. Once you are happy the optimum
setting has been achieved the sound should be full, warm and integrated, with no individual
speaker being dominant.
If the subwoofer is triggered on by appliances switching on and off, re-route the input signal cable
before taking further measures.
10