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DriveRack® User Manual
Section 4
Sub-Harmonics Synth - 0 to 100%
This parameter sets the overall level of the Subharmonic Synthesizer.
24-36Hz and 36-56Hz (Subharmonic Synthesis) Level - 0 to 100%
These controls individually let you customize the amount of the respective synthesized
frequencies to be added in, tuning the ultimate bass response of your system to taste. For
example, if the sound is too woofy or growly, try turning down the 36Hz-56Hz level. If your
woofers are bottoming out (making a ticking, popping sound), try turning down the 24Hz-36Hz
level. You may find that a setting produces fine results in one room, but produces too much
boominess in another. If this occurs, adjust the controls as needed, (e.g., decrease one or the
other of the band levels). Experimentation will pay off with smooth, full, deeply extended bass.
Remember, you are not selecting a frequency. You are controlling the overall level of each
band.
4.4 Gate
Gate On/Off
Local (per band control) or global on and off.
Threshold -50 to 20 dBu
The threshold is the volume level at which the gate opens. Anything above the threshold passes,
while signal that is lower than the threshold is attenuated. Beware, setting the threshold to high
can cut off the tail end of signals as they fade out (the sustain of a guitar note, a held piano
chord, a reverb tail, etc.).
Ratio 1:1.0 to 1:15
This is where you decide how much downward expansion you want. This ratio works opposite
from that of the compressor or limiter. If a ratio of 1:4 is selected, a signal that is 1dB below the
threshold will be reduced in gain so that it becomes 4dB below the threshold.
Attack 0.1 to 200 m Sec
As the signal reaches the threshold area, the Attack control sets the speed at which the gate
opens. Use very fast attack times to catch the fronts of transient signals.
Hold 0 to 500 m Sec
The Hold control sets the amount of time the gate is held open after the signal passes below
the threshold point.
Release 360 to 5 dB
Release sets the speed at which the gate “closes” or attenuates when the end of the Hold time
is reached.
Max ATT 0 to Inf. dB
This sets the maximum amount of attenuation for the gate.
Detailed Parameters