The (Coelangelo-designed) line driver and the phono preamp modules in the ML-1 were similar but for different gain and HF compensation. Haven't been available for years. The schematic for one of them is attached.
Lots of stuff in a VERY small footprint. Apparently, dissipating heat was a problem.
If you look at the pinouts, they used one of two "standard" configurations for encapsulated op amps made from discrete components, that various suppliers to the professional music industry used in 70's era mixer consoles. Some of these are still available as kits - suggest doing a search on "discrete op amp kits". The JC-1 design was different but if you can find or build one of their "replacement" modules it should work.
Charles
Lots of stuff in a VERY small footprint. Apparently, dissipating heat was a problem.
If you look at the pinouts, they used one of two "standard" configurations for encapsulated op amps made from discrete components, that various suppliers to the professional music industry used in 70's era mixer consoles. Some of these are still available as kits - suggest doing a search on "discrete op amp kits". The JC-1 design was different but if you can find or build one of their "replacement" modules it should work.
Charles
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The ML-5 amp module you posted maybe was designed by Tom Colangelo, but the line
module for the ML-1 was designed by John Curl and uses a different circuit.
It will not fit because they use another pinout. If you want to build a replacement module,
then have a look here:
http://www.diyaudio.com/forums/solid-state/10160-need-build-jc-2-preamp-4.html#post2092626
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This kit has the pinout for the ML-1 line driver
SGA-SOA-2 kit - $16.00 : Zen Cart!, The Art of E-commerce
Charles
SGA-SOA-2 kit - $16.00 : Zen Cart!, The Art of E-commerce
Charles
ML-1 Line Module
We might have a few available for JC-2 and ML-1 but these are newly builts to spec!
Please mail for details
Mario G Rouwenhorst
Netherlands
We might have a few available for JC-2 and ML-1 but these are newly builts to spec!
Please mail for details
Mario G Rouwenhorst
Netherlands
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