Lexicon MPX 500 V2 - UPGRADE Installation Instructions Manual page 16

MPX 500 Version 2 Software Release Notes
Reverb Parameters
Adjust
Decay, MidRT
HF Rlloff
Mix
PreDelay
BassMult
BassXvr
Rt HC
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Function varies from preset to preset. Adjust usually controls several parameters but may also
provide a set of special values for a single control (for example "Fast" and "Slow" for a
parameter that can also be set to any value via another control). Adjust has a range of 0 to
127 to provide a convenient attachment point for a MIDI controller.
Controls reverb time for mid-frequency signals. In Ambience, Decay controls the length of
the ambience "tail."
Sets the high-frequency roll off of a low-pass filter.
Controls the ratio of direct (Dry) vs. effect (Wet) signal output. When the MPX 500 is patched
into a console, this control should almost always be set to Wet (i.e. 100%).
Controls the time delay between the input signal and the onset reverberation.
Controls the reverb time for low-frequency signals. It works as a multiplier of the Decay
(MidRT) parameter. For example, if BassMult is set to 2x, and Decay is set to 2s, the
low-frequency reverb time will be 4s. For a natural-sounding hall ambience, BassMult
should usually fall between 1x and 2x.
Sets the frequency below which BassMult applies.
Sets the frequency above which high frequencies are rolled off in the reverberated signal.
This causes reverberated signals to grow progressively softer and results in a more natural
sound as it simulates the effect of air absorption in a real hall. Setting a low frequency for this
parameter can actually shorten the reverb time because it dampens the audio as it
re-circulates.
Lexicon, Inc.