Setting The Main Input; Output Levels - Lexicon CP-1 - REV 1.0 Owner's Manual

CP-1 Digital Audio Environment Processor
The CP-1 has its own volume and balance controls, which you will be using
in place of the ones on your existing preamp or receiver. Set the gains in your
main stereo channels for optimum dynamic range as follows.
For best performance, the CP-1 should always be driven to its full Input
Level.
Turn on the CP-1. For the first two seconds the display should read:
LEXICON CP-1, with a software version number and a copyright notice.
For another two seconds there will be a configuration message, then a
program name will appear. When the power-up routine is finished, aim the
remote control at the unit and push the EFFECT MUTE button (bottom row,
right). The message: EFFECTS OUTPUTS OFF will appear in the display for
about 4 seconds and the EFFECT MUTE LED on the front panel will light.
Turn on your preamp, choose a signal source and play some loud music (a
heavily compressed FM rock station or heavy-metal CD is ideal). Turn the
preamp's volume control up about three quarters of the way. Adjust the CP-
1's INPUT LEVEL control until the red level-indicator LEDs at the right of
the display blink occasionally, then reduce the INPUT LEVEL until only the
green LEDs are lit.
Push and hold the VOLUME DOWN button on the remote control until the
bar graph on the display completely disappears and the display reads
SYSTEM VOLUME -64 dB. Turn on the main stereo power amplifier, then
hold the VOLUME UP button until the CP-1's volume is at -03 dB. If the
back-panel potentiometers are turned all the way down, as they should be,
you will not hear any sound yet. If you hear loud sound as the CP-1's
volume advances, stop and reset all rear-panel gain potentiometers fully
counterclockwise until they are completely off before proceeding.
With the CP-1's remote volume nearly all the way up, slowly advance the
rear- panel potentiometer for the MAIN OUTPUTS until the sound is as
loud as you will ever want to play the system. (Make sure that this level is
not high enough to cause speaker distortion or amplifier clipping.) DO
NOT TOUCH THE GAIN ON YOUR PREAMPLIFIER AFTER THIS
ADJUSTMENT. USE ONLY THE CP-1'S VOLUME CONTROL.
If you are using the CP-1 in a tape monitor or processor loop, turn the rear-
panel MAIN output adjustment all the way up, then advance your
receiver's volume control until the music is as loud as you will ever want it.
DO NOT TOUCH THE GAIN ON YOUR RECEIVER AFTER THIS
ADJUSTMENT. USE ONLY THE CP-1'S VOLUME CONTROL.
If there are audible differences between the levels of the source you used for
this calibration procedure and other sources, you may have to readjust the
INPUT LEVEL to accommodate them. Where possible, try to use the output
level controls on the various sources to equalize levels.
Connection
Calibration
Setting the
Main Input and

Output Levels

Input Levels
Be sure the Input Level is as high as
possible without flashing red.
Set all output levels to zero; set Vol-
ume UP almost all the way.
Output Levels
Main Output
Set Main Output so system is as
loud as you are ever going to need it.
(Be careful that this level does not
cause speaker distortion or amplifier
clipping.)
and
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