Lexicon PCM 80 manual FX Adjust, InLvl L&R, InPan L&R, High Cut, Voice Dif, FX Mix

The Algorithms and Their Parameters

Row 0 of every algorithm contains parameters that provide overall control of Controls both the reverb and voice effects.

Mix

Mix controls the ratio of dry and wet signal present at the PCM 80 outputs. When the PCM 80 is patched into a console or an instrument amplifier through an auxiliary or effects loop, this control should always be set to 100% wet. (Control Mode 1.1 allows you to select a global Mix setting.) When an instrument is plugged directly into the PCM 80, a setting between 45 and 65% is a good starting point.

FX Adjust

FX Adjust controls the level of the processed (wet) signal before it is mixed with the dry signal (if any) and sent to the audio outputs. The range of this parameter is +12dB to -73dB, and Off (wet output muted.) FX Adjust is inactive when the PCM 80 is in Bypass mode, so it is a good idea to compare the levels with Bypass on and off while editing this parameter. Adjust it until the audio level sounds the same with bypass on and off.

InLvl L&R, InPan L&R

InLvl L and InLvl R control the level and phase of the unprocessed dry signal into the effects. The range of these parameters is from Full (0dB) Phase Normal, to -85dB Phase Normal, Off, -85dB Phase Inverted to Full (0dB) Phase Inverted.

InPan L and InPan R control the location of the left and right input audio as a stereo image to the effect's audio input. Unmodified stereo imaging to the effects can be achieved by setting InPan L hard left (50L) and InPan R hard right (50R). Changing InPanL to any other value (49L to 50R), takes the left audio input and presents it as a panned source to the effect's left and right input. Changing InPan R to any value other than 50R, does the same for the right audio input.

High Cut

High Cut sets the high frequency cutoff of a low-pass filter. This parameter affects both channels.

Voice Dif

This parameter is available in all of the 4-Voice Algorithms, and in Glide>Hall. It controls the density of echoes in the delay voices, independently of Reverb diffusion. High levels of diffusion thicken, or smear, the echoes. This is most noticeable on material with sharp transients.

FX Mix

FX Mix controls the balance of reverb and non-reverb effects. (Non-reverb effects are those processed as "voices" controlled by level, delay and feedback parameters generally found in rows 3-7.) The range of this control is 0 to 100%.

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