S-4000 Digital Snake Owner’s Manual 67
6—Using the S-4000 System
Setting the Preamp Gain
Use the following procedure to set the preamp gain on an S-4000S input channel:
1. Select the desired channel (1-32) with the CHANNEL knob.
2. Send an input signal to the selected channel.
3. While viewing the input level on the LED input meter, use the GAIN knob to adjust the preamp
gain to the desired level.
If the signal level exceeds 0 dB, the CLIP indicators on the LED input meter and signal status
indicators will light and distortion will occur. For the best audio quality, set the preamp gain so
the meter reads between -18 and -3 dB on the input signal’s loudest peaks.
4. Repeat Steps 1-3 to adjust other channels’ preamp gain.
The indicator lights surrounding the GAIN knob show the currently selected channel’s gain
setting.
To adjust the input level on an S-4000H input, adjust the level at the sending device.
Input Pad
Each S-4000S input channel features a switchable input pad. When
the pad is engaged, the channel’s input sensitivity is reduced by 20
dBu.
Use the pad when connecting a “hot” audio source to an S-4000S
input—one whose signal exceeds 0 dB (and causes the clip indicator
to light) even when the channel’s GAIN knob is at its lowest setting.
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