Gain Staging / Mixer

L1 Model I

L1 Classic

This is a quick setup for connecting a mixer to a PS1 Powerstand for a Classic or L1™ Model I.

1. On the Mixer
   • Run prerecorded music into the Mixer. Set input trims (on the mixer) so that the signal is strong but not clipping.
2. On the R1 Remote
   • Set Master Level at "0". The L1™ System should be silent.
3. On the R1 Remote
   • Set Channel 1 Level at 12 o'clock (straight up)
4. On the Mixer
   • Set Output at its maximum without clipping

5. 

   Signal/OL LED

   On the PS1 Powerstand
   • Set the input trim so that you get steady green on the Signal/OL. (red flickers are okay).
   • If you set the input trim to "0" zero, and you are getting solid red on the Signal/OL LED then use a Pad to attenuate the signal. If you reduce the output from the mixer, you will probably raise the amount of noise in the signal path.
   • Set the Channel 2 input trim to 0
   • Set the Channel 3 input level to 0
   • Set the Channel 4 input level to 0
   • As a check, the R1 Remote Channel LED should be doing the same thing as the PS1 Powerstand Signal O/L LED. Solid green, occasional red flickers.
6. On the R1 Remote
   • Bring up the Master Level to 12 o'clock (straight up)
   • If everything is working, you are probably hearing the System at very close to its volume limit.

Test: On the Mixer, set the master output all the way down:

• If you are hearing a low frequency hum, check for a ground loops.
• If you are hearing a buzz, check for sources of line noise.

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