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Old 27th June 2012, 09:56 PM   #991
Zen Mod is offline Zen Mod  Serbia
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main difference is bidirectional nature of shunt reg

it doesn't mean much when we think of it - God ! , that stage is A class anyway ! , but when you put proper shunt reg , there is always difference in sound

positive , for these old ears



edit - maybe - as solution for including the reg - is to leave intact just LC , toss everything after , and connect reg .

1440x0,046 will probably be enough of overhead
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Last edited by Zen Mod; 27th June 2012 at 09:59 PM.
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Old 28th June 2012, 12:43 AM   #992
cjkpkg is offline cjkpkg  United States
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OK Gentlemen!!!!

I have SILENCE!!!!

Here is the PSU I whacked up tonight....It is DEAD SILENT now...ear to the tweeter silent. I tried the bridge with the allied xformer and the caps started to sizzle so I shut it down immediately. Have not tried the toroid yet since the first C in the setup is only good for 400V...I placed an order with Mouser today to breadbord up a proper PSU for it and use the PS1 for something else.

Thank you all for ideas and support here...this one was very frustrating...Salas, my friend, you called it from day one...CLCRC works magic on my setup.
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Old 28th June 2012, 01:03 AM   #993
cjkpkg is offline cjkpkg  United States
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B+ is 322 and cathodes are 14.22 and 14.29...happy camper here....listening to my bass track...baby mammoth "for dear life"...that track will test if you are getting LF or not...
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Old 28th June 2012, 01:13 AM   #994
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Whats your power amp? Glad you got it worked out. This forum is a shining example of the positive ways on wgich the internet can influence our lives. Where else would you find so much help fromso many experienced people. Great lesson as usual fellas!
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Old 28th June 2012, 01:16 AM   #995
cjkpkg is offline cjkpkg  United States
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Right now it is the Moskido...aikido front end into a MOSFET power stage...class A inefficient as hell but sounds divine.

and yes...this is THE most helpful forum for diy stuff with people actually HELPING and not criticizing...except when it is REALLY deserved...
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Old 28th June 2012, 02:00 AM   #996
Salas is online now Salas  Greece
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Told ya it was racket with the PS-1 reg for some reason. Since you are gear-less to analyze so we could help you combat that, you are better off with passive filter cells. Congrats for you got music finally.
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Old 28th June 2012, 03:10 AM   #997
stajo is offline stajo  Sweden
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Congrats even if I dont quite understand what PSU you really are listening to but anyway here

Click the image to open in full size.

is a solution good for 800 volts as first cap if you dont want to wait for Mouser and DHL. Gives you a healthy bleeder as bonus.

Counts as 47 uF

Best
Staffan
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Old 28th June 2012, 11:58 AM   #998
cjkpkg is offline cjkpkg  United States
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So, this is the PS1 HV schematic, and how I temporarily modified it...sorry for the crude paint like image but I think you will get the idea.

I will get a breadboard this weekend and yank you the PS1 PCB.
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Old 28th June 2012, 12:01 PM   #999
Salas is online now Salas  Greece
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Did you get full tone and good resolution with this arrangement? Is it OK to you?
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Old 28th June 2012, 12:16 PM   #1000
cjkpkg is offline cjkpkg  United States
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Yes, listened for a few hours and it sounded wonderful.

I am using the Russian 6P6S got a great price on a matched pair on "the bay".

I will pull out the broskie PSU and whip up this new PSU and hopefully put it all back together this weekend.

I think I have a 500V 47uF kicking around but I did not order one from Mouser yesterday...I still may play with which xformer to use which will dictate the rectifier style.

After 4 hours the little Allied xformer was pretty warm but not "hot". It is probably working pretty close to the limit though. I would prefer to use the toroid if I can, the heater winding has more headroom too.
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