Alesis S4 Plus Reference Manual page 110

Editing Effects: Chapter 7
Overdrive Threshold
This sets the level the signal feeding the Overdrive effect must be reach before the
Overdrive effect will begin distorting. It can be set between 00 and 99. If this number
is very low, the Overdrive effect will start to distort almost right away. When set to a
high number, the distortion will not occur until the signal feeding the overdrive
becomes louder than the Threshold setting.
Overdrive Brightness
This sets the tone of the Overdrive effect. It can be set between 00 and 99. Higher
numbers result in a brighter sounding overdrive. Lower numbers result in a duller
distortion sound.
Overdrive Balance
This controls the output mix of the Overdrive effect. It can be set anywhere from
"CLEAN<99" to "CLEAN<00>OVRD" to "99>OVRD". When set to "CLEAN<99", the
Overdrive effect cannot be heard at all. When set to "CLEAN<00>OVRD", you have
an even mix between the original, uneffected signal and the overdriven signal. When
set to "99>OVRD". only the overdriven effect is heard.
Note:: The CLIP indictator is disabled when configuration 5 is selected.
S4 Plus Reference Manual 109