LA Audio MPX10 - Manual (Page 16)

Page 16
level falls the more the gain is reduced. Expander response is soft knee
around the onset of attenuation which combined with a low ratio (2:1) and
slow decay (similar to 'release' on a gate) time ensures transparent
operation.
The fast recovery (similar to 'attack' on a gate) time ensures that leading
transient edges are not lost.
N R T H R E S H O L D control
Sets the point at which the expander starts to attenuate. Threshold range is
0dB (reference +4dBu), CW to -70dB, fully CCW.
With the control fully CCW (-70dB) the expander will effectively remain
open.
E X P . led
Illuminates to show the onset of expansion ie. signal has fallen below
Threshold.
Please note unlike a gate led which shows that the gate is fully open or
closed, the EXP led lights to show the signal has fallen below the set
Threshold. The actual amount of signal attenuation is displayed on the GR
(Gain Reduction) meter.
C O M P R E S S O R T H R E S H O L D control
This control sets the signal level above which compression starts. The
Threshold range is -30dBu (CCW) to +20dBu (CW).
R A T I O control
Ratio defines the amount of compression applied to the input signal once it
has exceeded the Threshold level. A Ratio setting of 2:1, for example
means that for every 2dB that the input exceeds the Threshold, the output
will increase by 1dB. The following graph shows the relationship between
input and output levels for various Ratios -
INPUT
OUTPUT 1:1
2:1
4:1
10:1
20:1
THRESHOLD
0dB
0dB