Lexicon MPX 550 manual Dynamics, Peak Expansion, ExpThrsh, ExpLvl 0dB to 5.89dB

Program Descriptions

Lexicon

DYNAMICS

Note:

A few seconds after the Dynamics preset is loaded, the Dynamics name will flash briefly on the front panel display. This does not affect audio input or output.

Dynamics is intended for use in the studio, when dynamic processing of stereo signals is required. Because of its long delay, this preset is not recommended for use in a live performance or as a mix insert. It includes effects that perform peak expansion, compression, and tape saturation in that order.

Dynamics includes nine parameters that are divided into three Edit Pages. Peak expansion settings are controlled on the first page, compression settings are controlled on the second page, and tape saturation settings are controlled on the third page. The first page also features a switch that selects between gain reduction and input metering.

PEAK EXPANSION

Peak expansion is used to raise the overall level of sound sources that rise above the adjustable peak expansion threshold. In performances with a wide dynamic range, peak expansion can increase the level of low-level sound sources. For example, for a relatively quiet instrument that swells in volume without the desired impact, peak expansion can raise the instrument level during the swell.

ExpThrsh (-31 to 0dB)

Controls the threshold above which expansion is applied. Lower settings enable low-level sound sources to expand. Higher settings enable only very high-level peaks to expand.

ExpLvl (0.0dB to 5.89dB)

Controls the amount of expansion that is applied to sound sources that rise above the expansion threshold. The parameter setting defines the maximum increase in signal level due to expansion. Higher settings increase the level of expansion applied. Maximum expansion is applied to signals that rise well above the expansion threshold for longer than 50ms.

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