Can I get a tone like the classic RCA theremins?
The string-like tone of the RCA theremins was in part the result of coupling between the pitch heterodyne oscillators, here’s a slightly long winded explanation. Here’s a letter from Howard Mossman: I own two RCA theremins, a MOOG ETHERWAVE instrument, a MOOG MELODIA theremin and an old SWTP unit, so I am quite a mavin on what a theremin should sound like and how it should respond to the players hand positions. The (Theremax) Volume circuit is superb and … does not produce a chirp when the volume loop is touched; as does (another theremin). The Pitch circuit also works well with a remarkable range – the problem I found with the Theremax is … it does not sound anything like the RCA theremin. But here is the good news! The Tmax can be easily modified to produce the classical theremin sound by makeing the following simple addition: … in the (illustration above) … if you connect a 10k ohm resistor (brown-black-orange) to these same circuit locations, instead of the “gimmick”, the r
