1000I Subwoofer - Operation; Switching On; Setting Up And Use - Q Acoustics 1000i User Manual

1000i Subwoofer - Operation

Switching On

Check that all system connections are properly and securely made.
Ensure that the subwoofer is switched off.
Set the subwoofer level control roughly halfway. Set the crossover control
to 70Hz.
Plug the supplied power cord into the subwoofer and then into the mains
point. Switch on the power at the mains point and then switch the
ON/OFF switch on the subwoofer to ON. The POWER light on the
subwoofer rear panel will glow and the subwoofer is operational.

Setting Up and Use

As there is a close relationship between the subwoofer volume, its
physical position and the crossover frequency, mutual adjustments to all
three may be necessary before the system is fully set up.
Level: The Level Control sets the volume of the subwoofer relative to the
other speakers in the system. Set a level that enhances the bass of the
system. There should be a seamless blend between the front speakers
and the subwoofer. If you can hear the subwoofer it's too loud!
Crossover frequency: Set the crossover control according to the size
and low frequency extension of the front speakers. The role of the
subwoofer is to extend the bass response of the system and not to
increase the overall bass level. If the loudspeakers are large, a value
between 50 and 60 Hz is probably about right. With smaller speakers
such as the 1010i, this can be increased as far as 90Hz. At higher settings
the subwoofer may become intrusive and low level detail and definition
may suffer.
As always the final settings should be determined by listening. You
should listen to a wide range of music at different volume settings while
doing the setup.
When setting up the subwoofer, 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.
Phase: The phase switch should be initially set at 0º. As room acoustics
and placement are important at very low frequencies the phase may
need to be set to 180º. One setting will offer fuller and more extended
bass than the other. As the effect can be quite subtle, especially with
small loudspeakers where relatively more bass is coming from the
subwoofer, extended listening and experimentation may be necessary
before the final decision is made.
Auto Power On: This feature enables you to switch the main system on
and off without having to remember to switch the subwoofer on and off as
well.
The 1000Si has a built in level sensor. If there is no input, after a short time
the subwoofer will automatically power down into Standby mode. This is
indicated by the POWER light on the rear panel changing to red. As soon
as the subwoofer senses an input it will automatically switch into
operational mode and the power light will again glow green.
Although the subwoofer can be safely be left in standby mode
indefinitely, if you are going to be absent from home for a long period, we
advise that the unit be switched off at the ON/OFF switch.