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#361 Re: The Nemesis 813 PP Amplifier
Posted: Tue Jun 30, 2020 9:49 pm
by IslandPink
ed wrote: ↑Tue Jun 30, 2020 1:53 pm
it really should count, it's prompted by Susan Parker, her of Zeus fame.
Well of course you are right .. but I don't know Susan from Eve. I can go away and redress this, given a little time, though !
#362 Re: The Nemesis 813 PP Amplifier
Posted: Tue Jun 30, 2020 10:00 pm
by Paul Barker
That brings the adapted halogen lighting smps. Unwind choke one turn to raise frequency further from 20khhz, alter output transformer (tiny toroid) Sq wv scope it for rms.
#363 Re: The Nemesis 813 PP Amplifier
Posted: Tue Jun 30, 2020 10:02 pm
by Paul Barker
Stephie says filament starvation is effective on 813....
#364 Re: The Nemesis 813 PP Amplifier
Posted: Thu Aug 04, 2022 1:01 pm
by seaview
I am looking for 0-2.5-5-6.4v Paremeko filament transformer. Can I get your assistance?
#365 Re: The Nemesis 813 PP Amplifier
Posted: Thu Aug 04, 2022 5:58 pm
by seaview
IslandPink wrote: ↑Tue Jun 30, 2020 4:52 pm
James - can you think of any reason why I was able to get the Auroras dead quiet with AC fils on the 300B's, but Stephen couldn't get it anywhere good enough on the 813's ? There must be a few dB difference accounted for by the 10V vs. 5V , plus the Tannoy 15's vs. Ariels , but even so...
I think I used the Paremeko transformers which have 0 - 2.5 - 5 - 6.4v windings, hence a built-in centre tap.
Hi.I am looking for 0-2.5-5-6.4 Paremeko filament transformer. Can I get your assistance?
Kind regards