OUTPUT APPLICATION SWITCH
The OUTPUT APPLICATION switch should be configured before you turn on the amplifier. This switch allows you to choose between three different configurations:
LIMITER ON (TYPICAL). This is the normal configuration:
LIMITER OFF is also full bandwidth audio, but without protective limiting.
LOW OUT (SUBWOOFER) mode, with
LIMITER ON, 
LIMITER OFF
The LIMITER is not designed
to alter your sound — it’s
just there to protect your
speakers from the effects of
clipping. Its effect is virtually transparent, meaning you
probably won’t even notice any audible difference. We recommend that you leave it engaged, hence the TYPICAL label below the ON setting.
If you’re working at quiet levels all the time, or you’ve already placed a compressor/limiter in the signal path, or if you just hate compression, you can leave the LIMITER off.
The LIMITER works independently on each channel. It senses when the amplifier channel is about to be overdriven and attenuates the overall level just enough to keep the signal from clipping. Clipping occurs when the output voltage no longer linearly follows the input voltage and simply stops. This causes a sine wave to “square off,” and the average power going into the speaker is roughly double that of a sine wave. Square waves sound awful, and could possibly damage your tweeters and your reputation.
The LIMITER is especially handy when you’re working with loud output levels. Having the signal spikes (kick drum, for instance) attenuated a bit can actually increase the apparent loudness of the overall mix without diminishing the “power” behind the spikes.
Be Forewarned: With the LIMITER engaged, you can still overdrive the amplifier into clipping and cause distortion. It just takes a stronger signal to do it. So even with the LIMITER turned on, you should still pay close attention to the front panel OL LEDs 
, especially if you are hearing distortion or your speakers start smoking (which is bad for their health).
1CHANNEL
INPUT |
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BALANCED | LOW CUT FILTER |
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OR |
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UNBALANCED |
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B100 Hz
U
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OFF | 170 Hz |
| AMP MODE | |
STEREO | MONO BRIDGED | |
TYPICAL | ||
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| SUMMED | |
OUTPUT APPLICATION | ||
| FULL | LOW OUT |
| RANGE | (SUB WOOFER) |
CROSSOVER 
60Hz | 90Hz | 120Hz |
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| CHANNEL 2 |
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| INPUT |
LOW CUT FILTER | BALANCED | |||
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| TYPICAL | OR | |
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| 100 Hz |
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B |
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| OFF | 170 Hz |
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THRU
THRU LOW HIGH OUT OUT
IN
SWITCHED OUTPUT
OFF
ON
TYPICAL
LIMITER
(CH1 & CH2)
THRU
HIGH LOW THRU
OUT OUT
IN
SWITCHED OUTPUT
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