Pars Posted February 29, 2020 Report Share Posted February 29, 2020 Does anyone have schematics for either the Gold (balanced?) or the unbalanced version of these? I told a person I dealt with (diyaudio user) that I thought they might be available (and told him why bother), but his interest is just in the front end section as a preamp). I saw what is available on the eservice info site, but can't remember my login there. The user says he has some incomplete schematics with pencil markings on them. I had the attached jpeg, but think this could be what he already has. Thanks for anything you can find. Quote Link to comment Share on other sites More sharing options...
n_maher Posted February 29, 2020 Report Share Posted February 29, 2020 I'm pretty sure that these were available back in the day so someone must have them. I'll see if I can dig out an old external drive and search for it since I used to download stuff like this and save it but not sure I ever bothered with the Melos stuff. I'd wager @spritzer or @kevin gilmore are the most likely to have it at the ready. Also wondered if you'd seen this - Quote Link to comment Share on other sites More sharing options...
kevin gilmore Posted February 29, 2020 Report Share Posted February 29, 2020 actually all I have is the original above. this thing is a real fucked up mess designed by an idiot on lots of really bad drugs. using the tube filament as a load for the output transistor is all sorts of fucked up. Quote Link to comment Share on other sites More sharing options...
Pars Posted February 29, 2020 Author Report Share Posted February 29, 2020 Thanks guys. The video was interesting, to say the least Quote Link to comment Share on other sites More sharing options...
justin Posted March 15, 2023 Report Share Posted March 15, 2023 I found a Grado HP-2 and now I wonder if anyone would want an updated SHA-1 😄 but also, could it be considered an update if it DID NOT use the tube filament as a load?? 2 Quote Link to comment Share on other sites More sharing options...
justin Posted March 15, 2023 Report Share Posted March 15, 2023 Kevin is now working on a new amp that uses 2 car batteries and a coat hanger as the load 2 4 Quote Link to comment Share on other sites More sharing options...
swt61 Posted March 15, 2023 Report Share Posted March 15, 2023 (edited) We just call that a nipple stimulator in the gay world. Edited March 15, 2023 by swt61 3 Quote Link to comment Share on other sites More sharing options...
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