QAcoustics 3000 Serie Manual De Usuario Y Especificaciones Del Producto página 27

Stereo System
Setting Up
Check that all system connections are properly and securely made. Ensure that the subwoofer is
switched off. Set the controls to the following default settings:
Level
Crossover
Phase invert
Auto on
Plug the supplied power cord into the subwoofer and then into the AC supply socket. Switch on the
power at the supply socket and then switch the power switch on the subwoofer to 'ON' . The POWER
light on the subwoofer amplifier panel will glow and the subwoofer is operational.
Play some music you are familiar with and experiment with the Phase invert setting and level control
until you hear a good 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. Once you are happy with
the sound you can then fine tune the performance by using the remaining controls.
Crossover: The crossover control determines at what frequency your subwoofer output begins to
rapidly diminish. This should be set so that it corresponds with the frequency your main speakers
begin to produce a strong output by themselves. The adjustment allows for a smooth handing over
between subwoofer and main speaker output. If this setting is too low there will be a 'hole' in the
sound where certain frequencies are weak, conversely if it is too high there will be an exaggeration
of certain frequencies producing an overpowering bass. You can get an idea of the correct setting
from your main speakers specification sheet, look for the lowest frequency that the speaker produces
(the "-3dB point") under the "Frequency response" heading. Room positioning has a dramatic effect
on low frequency reproduction of both the subwoofer and your main speakers so don't be worried
if you find you require a setting which does not correlate with the specified low frequency point of
your main speakers.
Approximately half
Minimum (50Hz) for large floorstanders and halfway (100Hz) for
bookshelf or small speakers
0°
AUTO or ON
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