LEXICON MPX1
User Guide

MPX 1 User Guide

Lexicon

Reverb Effects The MPX 1 Reverb effects provide a full suite of reverberation and ambience algorithms.
All of the reverbs are true stereo in that differerent processing is applied to the left and right input signals. Dedicated processing resources are allocated to the reverb effects so that you can always load any reverb into any program, regardless of what other effects are loaded.

Chamber
The Chamber effect produces an even, relatively dimensionless reverberation, with little change in color as the sound decays. The initial diffusion is similar to the Hall effect, but the sense of space and size is much less obvious. This characteristic, along with the low color of the decay tail makes Chamber useful on a wide range of material. It is especially useful on spoken voice, giving a noticeable increase in loudness with very low color.
Chamber 4PA Jazz Chamber

Mix Level Size Link Diff P Dly Bass Decay Xover Rt HC Shape Spred

0-100% Off, -89 to +6dB 4.0-35 meters Off, On 0-100% 0-250ms 0.2-4.0x 0.07-65.4s 30Hz to 19.5kHz, Off 525Hz-21.2kHz 0-255 0-255

Dry/Wet ratio Amount of effect in the processed signal Length of Chamber Scales Decay and Spred with Size Increase of initial echo density over time Delay inserted before the onset of reverberation Reverb time for low frequency signals Reverb time for mid frequency signals Frequency of transition from Decay to Bass High frequency content of Decay Contour of the reverberation envelope Sustain of reverberation after initial build up

Hall
The Hall effect emulates a real concert hall. The reverberation is very clean, and designed to remain behind the direct sound � adding ambience, but leaving the source unchanged. This effect has a relatively low initial density which builds up gradually over time.
Mix Level 0-100% Off, -89 to +6dB 20-76 meters Off, On 0-100% 0-250ms 0.2-4.0x 0.12-65.4s 30Hz to 19.5kHz, Off 525Hz-21.2kHz 0-255 0-255 Dry/Wet ratio Amount of effect in the processed signal Length of Hall Scales Decay and Spred with Size Increase of initial echo density over time Delay inserted before the onset of reverberation Reverb time for low frequency signals Length of the reverb tail Frequency of transition from Decay to Bass High frequency content of Decay Contour of the reverberation envelope Sustain of reverberation after initial build up

Hall 4PA

Concert Hall

Size Link Diff P Dly Bass Decay Xover Rt HC Shape Spred

* = Interpolated; ( ) = Option of preceding parameter 7-26