Showing posts with label Douglas Self. Show all posts
Showing posts with label Douglas Self. Show all posts

Sunday, August 6, 2023

Mix bus and channel muting

I'm designing a variation of my pre filter mixer using the CH446Q 8x16 crosspoint switch, and while doing so I started wondering if having the switch after the mix input resistor was a good thing or not. 

Douglas Self to the rescue, seems that switching directly to the virtual ground of the mixer summer is the way to go.

From "Self on Audio" by Douglas Self - Figure A seems to be the way to do things which is what I've done in my new design.

My mixer