SB4001 MANUAL V.1.2 4
www.serpentaudio.com
3. FRONT PANEL CONTROLS:
Comp In:
This is a true hardwire relay bypass.
Note: Use this to quickly and easily hear what the SB4001 is doing to your
audio. Also use this to help balance and adjust unity gain through the unit.
Threshold:
[The threshold is defined as the point in which compression takes place. The threshold
point of the SB4001 is approxi8dbu.]
A fully adjustable rotary potentiometer, the threshold knob will lower the threshold point
as it is turned. Unlike a traditional “compress” knob, the threshold knob will induce the
least amount of compression when it is turned fully clockwise, and will increase
compression as it is turned counterclockwise (which lowers the threshold point).
Gain:
A fully adjustable rotary potentiometer, the gain knob allows a total gain range of 24dbu
(+/-1dbu), from -6db of attenuation to +18dbu of gain.
Ratio:
The Ratio is defined as the amount of compression that takes place after the signal has
crossed the threshold point. The higher the ratio, the more the signal that crosses the
threshold will be compressed. Ratios of 10:1 or higher are generally considered
“limiting”, rather than compression.
For example: With a 10:1 ratio, for every 10db of signal above the threshold, the output
will be only 1db louder.
The SB4001 has stepped ratio times of: 1.5:1, 2:1, 4:1, 6:1, 8:1, 10:1.
Note: You may find that you get a more transparent sound to the GR with higher
ratios and more density and hold from lower ratios. Experiment with the ratio
setting and adjust the threshold along with the ratio until you have the sound you
desire.
Attack:
The Attack time is defined as the amount of time the compressor takes to respond once
the signal has crossed the threshold.
The SB4001 has stepped attack times of (In Milliseconds): 0.1mS, 0.3mS, 1mS, 3mS,
5mS, 10mS, 15mS, 20mS, 25mS, 30mS, 40mS, 50mS.
