Peavey X-VCA Output limiter features, Output limiter threshold control, Output limiter on switch

left / right & mono master modules 4

output limiter features

The L/R and Mono outputs are equipped with independent output limiters. The limiters are located AFTER the console output faders and only affect the signals that appear at the main Left, Right and Mono XLR's.

Limiting takes place according to the RMS level, allowing short term signal peaks to pass without attenuation. Limiters may be used for speaker pro- tection, or to prevent the system from producing sound levels that exceed local noise ordinances.The Left and Right signals are processed together by the Left / Right limiter (located above the Left / Right master faders) and the Mono signal is processed by the Mono limiter (located above the Mono master fader).

The features for both the Stereo and Mono limiters are identical.

output limiter threshold control

Adjusts the limit point. Any signal level beyond this point will cause attenuation at a ratio of 20:1. The limiter circuit provides "soft knee" limit- ing.This means that when a signal approaches the limit point, a certain amount of dynamic compression is applied in order to soften the effects of the limiter. Hard limiting occurs when the incoming signal is continuously above the limiter threshold.The threshold is adjustable from -6 to +20 dBu.

output limiter on switch

Activates the output limiter.When activated, the LED at the top of the Gain Reduction meter is alluminated.

gain reduction metering

LED LED LED LED LED LED LED LED This eight segment meter indicates

how much limiting, or signal attenuation is taking place. Since the meter is showing attenuation, the LED's illuminate downward, and not upward as one would expect with a level increase.The range displayed by the gain reduction meter is between 1 and 24 dB of attenuation. The top LED illu- mininates when the Output Limiter is on.The other seven LED's respond to signal attenuation.

For more information, see the section on Gates, compressors and limiters.

Note: Caution should	+
be exercised if a sig-
nificant amount of gain

reduction is displayed, as this may cause a deteriora- tion in overall sound quality.

EXTREME CAUTION should be observed when removing or turning off any limiter.

Depending on level settings and how much limiting is taking plase, an abrupt level

change can take place	a
that could startle listeners
and even damage speak-
ers.

p. 65