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STD Squoosh Compressor
License: Public Domain
Mode: Editors' pick
- 0
Update time：
2024-02-28 16:55:13
Creation time：
2024-02-27 15:39:29
Description
Squoosh! is a Guitar Compressor of a unique design, using an LM4865MM IC, which is a small 1watt amp IC.
The audio output of this amp (VOL2, Pin8) is converted to a fluxuating voltage by Q3 and Q4 (depending on the strength of the signal) which is fed back to the DC_Volume Pin (4) of the IC, in turn will decrease the loud notes of the guitar audio- known as Compression!
Potentiometer VR2 controls the amount of overall compression fed back to Pin4.
Release of the compression depends on the value of Electrolytic Capacitor C6. I chose 2.2uf , but a shorter compression can be acheived by reducing the value of C6 or a longer compression by increasing the value of C6.
VOL1 (pin5) is the output of this footpedal to a guitar amplifier.
The "Headphone-Sense" Pin3 is held low (approx 1-2volts) to prevent VOL2 from turning off.
Circuit is unverified.
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