REAR PANEL:
1: CH1/CH2 XLR/JACK inputs
You can connect these balanced inputs to balanced and unbalanced line level audio sources (example: DJ-mixer)
2: X-OVER FREQ. control
(crossover frequency control) adjusts the cutoff frequency of the active filter. This crossover frequency can be set in a
range of 90 to 250Hz. It up to you to adapt its position to your own taste. For most subwoofers 90Hz to 150Hz seems
to be the best choice.
3: SUB processor
Controls the amount of low band signal, produced by the bass processor, from zero to maximum. The setting depends
on the application and can be adapted to your own taste.
Important : Note that the bass processor should be used with care to avoid possible speaker damage. Most smaller
and economical subwoofers are not capable of handling the low frequencies produced by this unit.
4: PHASE INVERT switch
Sometimes the conductors of the subwoofer are inversed which results in poor sound quality with a lack of low
frequencies: the opposite of what you expected! This can be corrected by inversing the (+) and (-) poles of the
cabling to your subwoofer or ...... by pushing the PHASE INVERT switch! Use a thin pen to press the phase
invert switch and compare the results of both positions. The position with the most bass production is the right one!
5: GROUND LIFT switch
In some cases nasty hum noises can occur due to ground loops in your setup. Setting the Ground lift switch to the
position "lift"breaks the ground loop between the amplifier and the chassis grounds of various other components in
your setup. As a result the hum noises disappear.
6: HIGH PASS FILTER
With this switch you can choose to filter the satellite outputs or not. If you use small satellite speakers than we
strongly suggest to switch the high pass filter on to protect the small speakers. If you use bigger satellite speakers
(for example 15" than you can switch this filter off. The satellite speakers will receive more low frequencies.
7: LIMITER switch
This amplifier has build-in limiters to protect both the amplifier and the connected speakers. We strongly suggest to
put this switch in on position at all times. Nevertheless if you are experienced or you use an external limiter you can
switch the internal limiters off.
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