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Compressor Saturation/"Crush" setting
Old 4th September 2007
Gear Maniac

Compressor Saturation/"Crush" setting

i'm reading through the manual for my Sonalksis SV315mk2 compressor, and i'm hoping someone can help me understand one of the settings they mention in here. i have a basic to intermediate understanding of compression but this is a little over my head.

on this plug there's a knob called "crush", ranging from 0-100%. This is how the manual describes it:

" Crush' acts directly on the compressor gain element, essentially
determining the level at which the gain reduction saturates [this is the
maximum gain reduction level that can be applied by the gain element].
Reducing the Crush control reduces the level at which the gain element
saturates, and thus reduces the 'Crush' of compression on transients.

High crush setting Lower crush setting
transients will be crushed potential maximum gain reduction is lessened

If the 'Crush' saturation did not automatically adjust to large 'Knee' settings, a
very abrupt [and unappealing] gain saturation could occur. Hence the 'Crush' is
always relative to the 'Knee' parameter; this enables simple and independent
alteration of the compression knee, without having to increase the saturation to

• When 'Crush' is set to '100%', the gain reduction will never saturate, thus all
transients will effectively be compressed [crushed] as fully as less transient signals. "

The problem is i don't really know what compressor saturation is or why it would help or hurt me in a particular case. From what I do understand, I think basically this button just lets you choose if transients will make it through compressed or uncompressed, but I could be wrong.

If i'm using this on my drums, should I keep that crush setting low to let transients through? If I'm using it on a master bus, I would probably want crush turned up for more of a limiter effect, right?
Old 4th September 2007
Lives for gear
DAH's Avatar
Kind of yes, the Crush knob actually adjusts curve of the knee, lower settings allow to affect peaky transients less. Want to squash it hard - turn it 100%
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