Sir Mile
Which psu should I use for tone control unit
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I do not wanna hack this tread so I have only a short question.
Did you guys here experience a high distortion with a load and low without a load, my circlotron do this, in sim I get very low distortions, that is strange, I think I have to look at the supply but when do set idle higher distortion drops, maybe a hexfet like the irfp460 do not like a circlotron like setup, I can try a other aproach Kaneta did.
regards
Did you guys here experience a high distortion with a load and low without a load, my circlotron do this, in sim I get very low distortions, that is strange, I think I have to look at the supply but when do set idle higher distortion drops, maybe a hexfet like the irfp460 do not like a circlotron like setup, I can try a other aproach Kaneta did.
regards
Attachments
I did measure with arta and with a load distortion is high, without load very low, I have a real amplifier tested after simulation, possible because it is a circlotron the trouble is pc card. so have to make a balanced to unbalanced converter or a pc card with balanced inputs.
So I did want to now if there are other things I do miss here.
thanks
regards
TB3 tone control = Marantz PM8004/8005 tone control
Damm it's from Marantz, what to say then no doubt it will be fantastic to here it. Thanx for sharing it Sir Apex and mrmax063.
Nice work! Great PC heatsinks and perfect for job. Did you upgrade to HV version (63v caps and MJE340/350)? Don't forgot to use silicone insulator pads on transistors and heatsinks.
Hi X, Thank you for your great contribution to this diyaudio thread. I have learned a lot from this forum.
This is the first time I build solid state amp. I really enjoy the progress
About FH9HV version, which pair is correct? MJE340/350 or KSA1381 /KSC3503? (refer to http://www.diyaudio.com/forums/soli...y-simple-quasi-mosfet-amp-21.html#post4823060 >>> it is KSA/KSC, cmiww)
I have ordered 4pcs pcb FH9, for the first pair 2pcs I use BD139 / BD140 like pictures above . And the rest will be HV version. I have ordered several KSA/KSC (and also silicon pad insulator) from aliexpress, but not yet comming. Hope it will arrive soon
PCB not tested
Marry Christmas !
Alex
Same layout with A33 ,but changed input transistors to JFET
Marry Christmas !
Alex
Attachments
Same layout with A33 ,but changed input transistors to JFET
Marry Christmas !
Alex
Nice work, thank you.
Regards
