QSC Audio SRA 1222 Stereo Amplifier User Manual


 
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SETUP- Clip Limiter
CLIP LIMITER ON: To turn the limiter on, slide the switch to the right (Sw.1: Ch.1, Sw.10: Ch.2).
CLIP LIMITER OFF: To turn the limiter off, slide the switch to the left.
Clip Limiters
The SRA has separate clip limiters for each
channel which respond only to actual amplifier
clipping. Amplifier clipping generates internal
error signals which cause the clip limiter to
quickly reduce amp gain and minimize the
overdrive. To preserve as much of the program
dynamics as possible, limiting occurs only
during actual clipping.
Each channel has its own clip limiter switch
that can be operated independently. Switch 1
operates CH1’s clip limiter and switch 10
operates CH2’s clip limiter.
Clip Limiting Tips
Clip limiting reduces extreme overdrive peaks, allowing a higher average signal level without audible
distortion. Increasing the gain with the clip limiter engaged, until clipping is again audible, can double
the average output power. Be careful not to exceed the power rating of your speakers.
The clip limiter is set to respond quickly after clipping is detected. On low frequency material, this may
be perceived as a “rubbery” effect. It may be preferable to turn clip limiting off, and let the amp clip
occasionally, especially if the speakers are robust.
If operating in Bridge mode, set CH2’s clip limiter to the same setting as CH1’s clip limiter.
Channel 1’s clip limiter is operated by switch 1.
Channel 2’s clip limiter is operated by switch 10.