Q Acoustics 2000i serues, User Manual And Product Specifications

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Stereo System
Setting Up
Setting up can take many hours of listening because all of the controls on
Always bear in mind that the human ear's sensitivity to bass varies
your subwoofer will interact; there is no easy route to success. The best
enormously with the volume level, hence the need for a wide range of
phase invert switch position is strongly affected by the chosen crossover
programme material and sound levels. Once you are happy with the
frequency so as you fine tune the controls you may wish to keep trying
sound you can then fine tune the performance by using the remaining
the alternative setting to see which you prefer.
controls.
Once you feel you are close with the settings you can now perfect the
integration between sub-woofer and main speakers by adjusting the
Crossover: The crossover control determines at what frequency your
phase control. This control is unique in that it uses a pure delay, made
sub-woofer output begins to rapidly diminish. This should be set so that it
possible by the integrated Digital Signal Processor, and so does not add
corresponds with the frequency your main speakers begin to produce a
sound damaging “group delay” as with most sub-woofers. The DSP
strong output by themselves. The adjustment allows for a smooth
scales the available delay so that this control always provides a 0 – 180°
handing over between sub-woofer and main speaker output. If this
phase shift at the chosen crossover frequency. This control affects the
setting is too low there will be a 'hole' in the sound where certain
level of bass produced at the crossover frequency and also how
frequencies are weak, conversely if it is too high there will be an
smoothly the transition occurs. Again this will interact with the crossover
exaggeration of certain frequencies producing an overpowering bass.
control so fine adjustments of the crossover frequency may be
You can get an idea of the correct setting from your main speakers
necessary to produce the best results. Also you may find you can get to a
specification sheet, look for the lowest frequency that the speaker
better end result by flipping the phase invert switch and trying to optimise
produces (the “-3dB point”) under the “Frequency response” heading.
the crossover and phase controls again. Experimentation is the key to
Room positioning has a dramatic effect on low frequency reproduction
getting perfect integration; once this is achieved you should never be
of both the sub-woofer and your main speakers so don't be worried if you
aware of any sound coming from the direction of the sub-woofer itself.
find you require a setting which does not correlate with the specified low
The end result will be a system with powerful, extended bass response
frequency point of your main speakers.
which appears to be coming from the soundstage between the main
speakers.
Connecting the 2070Si