Papers › A Bandpass Twin-T Active Filter Used in the Buchla 200 Electric Music Box Synthesizer
A Bandpass Twin-T Active Filter Used in the Buchla 200 Electric Music Box Synthesizer
Aaron D. Lanterman
This paper analyzes an unusual active bandpass filter employed in the Buchla Model 295 10 Channel Comb Filter, a synthesizer module developed as part of the Buchla 200 Electric Music Box by Donald Buchla. The filter consists of a peculiar rearrangement of elements in a classic Twin-T configuration; to our knowledge, it has not been previously addressed in the literature. As an example, we explore its specific application in the Model 295.
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