dbx DriveRack PA+ - Manual (Page 26)

a level that is lower than -10dBu is left at the same signal level. Light compression is where
only the loudest parts of the signal go over the threshold. Very heavy compression can be
achieved by setting the threshold low enough that almost the entire signal content is over
the threshold. For most signals the most natural compression is achieved when most of the
signal content remains just below the threshold and only the peaks cross the threshold.
Ratio (R) 1.0 to Inf:1
Ratio is the amount the unit reduces the signal level of the sound that is above the threshold.
A 2:1 ratio means that if the incoming signal is 2dB over the threshold the unit will compress
the signal, and outputs a signal that only goes 1dB over the threshold. For light compression
choose a lower ratio, while a heavy compression requires a higher ratio. A setting of Inf:1
makes the compressor act as a limiter.
Gain (G) -20 to +20 dB
This parameter is used to compensate for the gain lost during compression. By using heavy
compression on a signal and then boosting the signal with the output gain, the user can
create a signal that sounds much louder than it actually is.
Limiter
Limiter On/Off
Turns the Limiter module on and off.
OverEasy (O) Off to 10
There are ten levels of OverEasy® that can be used for the limiters. The point when the
limiter starts to limit is the “knee.” When the limiter starts to reduce the level of a signal
abruptly as it passes over the threshold this is called “hard knee” limiting. OverEasy® (soft
knee as it is sometimes called) is when the volume of the sound is limited gradually. OverEasy
limiting starts to limit before the level of the signal reaches the threshold and reaches full
limiting.
Threshold (T) -40 to +20dBu
Threshold is the signal level at which the unit starts to limit the signal. If the level is set to
-10 dBu, any signal larger than -10 dBu is limited while any signal that has a level that is
lower than -10dBu is left at the same signal level.
5.7 Alignment Delay
The DriveRack® PA+ offers alignment delay to use for compensating signal delay that
occurs due to internal speaker components such as horns, mid speakers and subwoofers
within speaker cabinets. The parameters for the alignment delay are as follows and are user
adjustable:
Delay On/Off
Turns the Speaker Alignment delay on and off.
Section 5
Detailed Parameters
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DriveRack
®
PA+