Bo Deadly
Well-known member
I can't find a schem for the ELX-1A but here are the critical bits for the ELX-1R:
IMO this circuit is not horrible. The mic circuit is nothing spectacular but perfectly ok. The TL072 mix amp could probably be replaced easily. It's got an oscillator, a decent headphone amp, an LDR limiter (which is really more like a compressor) and transformer out (but with weird wiring that could also be fixed pretty easily).
There are piles of these things on Ebay for nothing. Why?
Does anyone know what the difference is between the 1A and 1R?
UPDATE: Just noticed it uses a virtual ground so that +30V phantom can be made with only single supply transformer.
IMO this circuit is not horrible. The mic circuit is nothing spectacular but perfectly ok. The TL072 mix amp could probably be replaced easily. It's got an oscillator, a decent headphone amp, an LDR limiter (which is really more like a compressor) and transformer out (but with weird wiring that could also be fixed pretty easily).
There are piles of these things on Ebay for nothing. Why?
Does anyone know what the difference is between the 1A and 1R?
UPDATE: Just noticed it uses a virtual ground so that +30V phantom can be made with only single supply transformer.