Quote:
Originally Posted by feckn_eejit 
Someone sanity check me on this, but this could still work on a self-biasing adapter if you hook both the inputs to the step-up transformers AND the original stock cable up to the output terminals on your power amplifier, thereby paralleling the bias power generation system and the transformers?
I cannot see why this wouldn't work, but before you do it Smeggy I'd like to have someone else sanity check the idea...
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Sorry, guys, to be 2 pages late with this response, but the time-zone differences are showing up now!
This idea of modding my SRD6-SB (SB = Self-Biasing) to cut out the switch and PCB has obviously inspired feckn_eejit to try it on his SRD7, with the results he describes back on p.117. I've been fretting all night (I know, I know, sad isn't it?) how I could do this with the SB version, and came up with the same conclusion: if the original supply to the PCB (and switch, because as spritzer has pointed out, the switch also turns the bias circuitry on/off) is left
in situ, and the transformers are direct-wired (beefily!) to the power amps, then it should all work.
My only problem is aesthetics: how to get these beefy cables out of the SRD6 box neatly!
And then, of course, there is the SRD7 question: should I try and get hold of one of these? Is it a major improvement over the SRD6 in terms of sound quality, or does everybody here seem to prefer the SRD7 because some versions of it can be used to drive Pro (high bias, 5 pin) earspeakers?
And, please remember, I'm very new to this Stax transformer malarky, but it does seem they offer something more than the Stax amplifiers (if driven by suitable power amps). (
And what's particularly galling for me: I've only discovered this is in the past week, after spending only about 1/6th of what my main 3030 system cost! A real case of spending more not necessarily guaranteeing better sound quality... )