[sdiy] Buchla 291e teardown

[Lanterman, Aaron D]

I’ve always wondered if the 291e uses Vactrols like the original 291. It doesn’t! It’s completely different. It uses SSM2164 VCAs, so I’m guessing it’s probably closer to the State Variable Filter in the Oberheim OB-MX.

Here’s a video of me taking it apart, looking at the PCBs, and putting it back together:

https://www.youtube.com/watch?v=-ndWT1LWqJ8

Aaron Lanterman, Prof. of ECE, Georgia Tech
My blog on Education and Innovation: https://edupocalypsenow.wordpress.com
My blog on Electronics and Programming: https://lantertronics.blogspot.com
My YouTube channel on Electronics and Programming: https://www.youtube.com/c/lantertronics



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