Sidechain

[Heikki]

sidechain1.jpg (1.41 MiB) Viewed 19995 times

sidechain2.jpg (1.35 MiB) Viewed 19995 times

sidechain3.jpg (1.39 MiB) Viewed 19995 times

sidechain4.jpg (1.43 MiB) Viewed 19995 times

Schematic

sidechain.pdf

(22.7 KiB) Downloaded 503 times

BOM

sidechainBOM.pdf

(14.35 KiB) Downloaded 490 times

sidechainBOM.ods

(14.91 KiB) Downloaded 491 times

R8 determines the fastest possible realease time. With 47k fastest release is approximately 100ms. If faster release time is wanted change R8 to 22k it changes the fastest release to approximately 50ms.


Make sure BD139 is oriented correctly. Emitter goes to the square pad on BD139 footprint.

sidechainECB.jpg (254.54 KiB) Viewed 19995 times

Rotary

rotary1.jpg (2.23 MiB) Viewed 19995 times

rotary2.jpg (3.18 MiB) Viewed 19995 times

Schematic

sidechainrotary.pdf

(72.32 KiB) Downloaded 481 times

BOM

sidechainrotaryBOM.pdf

(21.5 KiB) Downloaded 487 times

sidechainrotaryBOM.ods

(11.85 KiB) Downloaded 495 times

[scott2000]

I noticed that when I have the threshold all the way at max, I still get led meter action when turning the input gain up. Is this normal? What are the leds indicating?
Thanks!!

[Heikki]

Even when threshold is at max, large enough input signal will start gain reduction.

[scott2000]

Even when threshold is at max, large enough input signal will start gain reduction.

...Thank you!