BA662 Clone with DC offset Trimmer

by Altitude909.
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2 layer board of 0.86x0.39 inches (21.87x9.80 mm).
Shared on June 19th, 2015 11:26.

Clone of the BA662 OTA use in old Roland Machines. I’ve added a trimmer and resistor to trim off the DC offset like on the SH-101 PCB. Interestingly enough, those parts were never populated on the SH-101 (probably cheaper to bin the parts for offset). This is the same mod that I documented for the x0xb0x..

http://misw.us/BA662a1.jpg http://misw.us/BA662a2.jpg http://misw.us/BA662a3.jpg

Original design by Open Music Labs

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