I have the same Abbas OPS and have you ever measured it’s output? I’ve never seen more than a couple to 2.5VAC with actual music.I'm getting around to building my R1 SissySIT, however my current (Abbas Audio) DACs have hot outputs, around 4.5 Vrms (according to Mr. Abbas, i have not measured them), and i'd rather not throw most of the signal away by attenuation. Unsure of the output impedance of the DACs, i will try to find out (tube buffers on output). I guess i could wire the autoformer differently to lower the gain, very grateful for any suggestions.
Zen Mod, what is your beef with Keratherm 86/82 (from Conrad)? I have been using it with no problems up to now. Is it a ticking bomb?good enough, tried and confirmed
if you ever get Keratherm 86/82 sheet from conrad.de , replace it
In context, I hope it was clear that I meant replacing something else with Keratherm , after getting it
I did bought 86/82 from Conrad, several times
again, for clarity sake - Keratherm is best , if you have torque thingie , so that way being able to avoid overcompressing it ( screw side going down comparing to pin side of mosfet case)
if you don't have torque thingie, use Al Oxide pads with good (data is necessary, so no name ) goop
if not having any of these , use mica + good goop
I did bought 86/82 from Conrad, several times
again, for clarity sake - Keratherm is best , if you have torque thingie , so that way being able to avoid overcompressing it ( screw side going down comparing to pin side of mosfet case)
if you don't have torque thingie, use Al Oxide pads with good (data is necessary, so no name ) goop
if not having any of these , use mica + good goop
Pass DIY Addict
Joined 2000
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+1 to the Al Oxide pads with good goop. They are cheaper than Keratherm, won't be pierced by a leftover (nearly invisible) thread of aluminum after tapping a bunch of holes, can be reused, and transfer heat just as well as Keratherm.
Roger….TO92 JFets are not for these pcbs
Some vendors take you literally. I got a pair from China where everything was gumbled up. It only had diode bridges between pins. No FET Just a paperweight.naah
microwave oven
- Yes someone said, they do a test in a microwave oven.
amazing imageafter some time , you get used to it
either that , or drop dead ...... at least in my case ..... so many suspense(s)
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