# I found a bug in Drum Leveler's Side Chain Filter

**URL:** <https://forum.soundradix.com/t/i-found-a-bug-in-drum-levelers-side-chain-filter/1966>\
**Category:** Drum Leveler\
**Tags:** macos, apple-silicon\
**Created:** [August 17, 2023, 6:19pm UTC](https://forum.soundradix.com/t/i-found-a-bug-in-drum-levelers-side-chain-filter/1966 "2023-08-17T18:19:24Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![davidvelez530](https://avatars.discourse-cdn.com/v4/letter/d/cc9497/32.png) [@davidvelez530](https://forum.soundradix.com/u/davidvelez530)\
**Post date:** [August 17, 2023, 6:19pm UTC](https://forum.soundradix.com/t/i-found-a-bug-in-drum-levelers-side-chain-filter/1966/1 "2023-08-17T18:19:24Z")

</div>

Cubase 12.0.70 and Reaper 6.81  
M1 Macbook Pro Ventura 13.2.1

The SCF changes the tone of the source on low frequency drums. Lets say I set the SCF Bandpass frequency to a range of 65 - 105hz, so it listens only to the fundamental of the kick (so it ignores the snare), the kick drum comes out of the plugin sounding wildly different that it did going in. No, I did not his the S button to listen to the sidechain. It does this with all my kick mics on both kick drums. Same thing happens on Snare Top, although to a much lesser degree, if I set the SCF bandpass at 180 - 230hz to only listen to the snare fundamental, and ignore the toms.

However, there is no detectable difference when I use this same technique on the rack tom close mics. I can hear it a little bit on the floor tom close mics, but its less obvious. Let me know if you need a session from me to see whats happening. This happens equally in Cubase and Reaper.