Simplistic MosFET HV Shunt Regs


Just installed the SSHV2 into the PSU for my Phono amp, my reaction is the same as Merlin, "WooooooooooooooooW", so many details and so clear, much wider sound stage!! Great job Salas.

Need to use a larger heatsink:D
 

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GND layout, Schematic used for RIAA & pic

N.B. Pic not show wire connecting GND chassis Tx, black GND wire is RIAA GND, alone one green wire is GND SSHV2 jumped F0+S0 at the pcb, two green wires are GND input/output RCA
 

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Oh my good:eek: the shield isn't connected, I think that I have to connect the shield as follows:

RCA Input: not connect, RIAA input connect
RCA output: connected, RIAA ouput not connected

OK?

Or have I to connect the shield both sides?
 

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diyAudio Chief Moderator
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You know how it goes with hum elimination on low signal high gain circuits. Nobody can solve it from afar better than the one who can put his hands on. Try different approaches so you can kill it all together if possible. See odd things also, like if your metal can capacitors react to grounding their shells for instance, but make sure there is no high voltage on those shells first. Too many things, takes patience especially without FFT, scope, strong troubleshooting know how.
 
diyAudio Chief Moderator
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A subjective area, depends on taste and synergy with the rest. Those caps can be influential as far as anecdotal feedback maintains in the course of this thread. I would just swap a couple of models already in my stash to determine if there can be picked up changing my system's tone, before allocating funds to that. Such caps you mention can easily demand more $ than building a couple of regs themselves.