This effect can be confusing, this should clarify things.
Things of Note:
1) When Int/Ext Signal is at 100% it is set to Kick, turning up ListenSidechan up 100% will play the kick drum. Turning down ListenSidechan to 0% will play the compressed bass signal.
2) When Int/Ext Signal is at 0% it set to Bass, turning up ListenSidechan to 100% will play the uncompressed Bass signal. Turning down ListenSidechan to 0% will play the compressed Bass signal.
3) If the filter is turned off and Int/Ext Signal is set to Bass, then it behaves like a normal compressor because the sidechain signal is the actual bass signal.
4) The middle meter shows how much compression is applied. It is accomplished by inverting compressed signal and combining the compress and uncompressed signal and the difference is sent to the middle meter.
5) White dots mean a split signal and red mean combine.
Compressor w Sidechain schematics
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- KVRist
- 42 posts since 3 May, 2021
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- KVRAF
- 3157 posts since 28 Mar, 2008 from a Galaxy S7 far far away
Im not sure differentiating the split and combine is necessary? Just a white dot would suffice as it shows up better and is easily seen if it's a split signal or combined one.
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- KVRAF
- 7412 posts since 8 Feb, 2003 from London, UK
It might also be clearer if "meter middle" were below "Audio Inverter", so it's more obviously "after" it.
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- KVRAF
- 7412 posts since 8 Feb, 2003 from London, UK
(If I were wiring it, I'd not have wired "through" the meters, they'd be ends -- I'd have wired the each feed to the meter and wherever else it went separately. Then you could "line up" the meters neatly at the bottom next to one another 
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