Coustic AMP400S Manual page 11

SYSTEM TUNING (CROSSOVER ADJUSTMENT)
Note: If you are using the Remote Gain, make sure to take this into account during set-up procedures
of the subwoofer amplifier. You should set the system up with the Remote Gain plugged in and with
the level knob turned all the way down (counter-clockwise). The Remote Gain only works when you've
selected the LPF (low-pass) crossover configuration.
Crossover Section
The amplifier has built-in high-pass/low-pass filters that can be bypassed by sliding the switch to
the (FR) position.
1. When the high-pass is selected (HP), the amplifier will be devoted to mid/tweeters.
2. When the low-pass is selected (LP), the amplifier will be used to drive woofers/subwoofers.
With this setting, the Remote Gain can directly control the amplifier playback level.
3. When the full range is selected (FR), the amplifier is used as a full range amplifier.
Crossover Frequency Selection (FREQ)
Both the high-pass and the low-pass section offer continuously adjustable crossover frequencies
between 40 and 350 Hz. Adjust the setting according to your speaker component specification or
to your particular preference.
Bass Boost Control (BASS BOOST)
Select a boost level between 0dB and +18dB @ 40Hz to enhance the bass performance for your sound
system. BASS BOOST is NOT free! Every 3dB of boost costs you twice as much in power. Make sure to set
the final gains after setting the Bass Boost to work best with your subwoofer/enclosure
combination. More is NOT always better!
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