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Old 10th April 2012, 11:49 PM   #661
Salas is offline Salas  Greece
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Quote:
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Still bright oddly enough.
A Zen cosmic filament light as sent by ZMod or just running it over 5VAC?
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Old 10th April 2012, 11:59 PM   #662
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Bypass with pios for a more err...mundane tone maybe.
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Old 11th April 2012, 12:15 AM   #663
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Salas .....

do not tell him anything , without sch drawn

we had already enough complication for few days

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Old 11th April 2012, 12:26 AM   #664
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I checked and it stays under 5V Much more likely that tube hitting wood mounting causing nasty vibrations. Didn't have right tube socket(pcb only with no mounting bracket) so glued to wood top. Got new one coming
PIO is first cap in PSU.
Truthfully, I am going to give it some time to see if caps "run in" any. Listening to Allison Kraus, you can hear it in her voice. Same with Mark Knopfler on Ragpicker's dream. I did have 4.7uF Obbligato PIO bypassed with Wima MKP10 .47uF. Took it out. Problem is, I have changed too many variables. Also, my FR units would be called bright by some. 6v6 was big step in right direction, driving BA3, but tube rectifier is not what I expected. I have no doubt it is me, but need time to figure it out. I'll be sure to ask questions or send personal PM's when necessary
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Old 11th April 2012, 12:34 AM   #665
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too many posts on too many pages

do you have somewhere proper sch or at least block sch of actual preamp ?

I presume you have shunt reg there ;

if yes , it is hardly that you'll hear too much of difference between solid state and tube rect. , especially if you're using choke in PSU

nevertheless , choke input PSU could be best , in case you have enough ooomphs in xformer secondary

btw - that resistor going from rect. cathode to first pio ; desolder it , put wire bridge instead ;
divide resistor in two , halved in value . and put one of them in each anode of rectifier
decrease their value if needed , to have proper voltage on first pio

that way tube rectifier will work more relaxed
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Last edited by Zen Mod; 11th April 2012 at 12:39 AM.
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Old 11th April 2012, 12:35 AM   #666
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Last cap is the more showy, try bypass or double up there after you let it bbq for a while first in chance it mellows out a bit. Ask Zen about bbq on stones for good tones. He is PM friendly.
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Old 11th April 2012, 12:41 AM   #667
Salas is offline Salas  Greece
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Originally Posted by buzzforb View Post
I did have 4.7uF Obbligato PIO
That gato ain't papery. Is a film oily gato, puss in poly boots.
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Old 11th April 2012, 12:41 AM   #668
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...... He is PM friendly.
only if you are sending me Olive Oil in PM

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Old 11th April 2012, 12:42 AM   #669
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Quote:
Originally Posted by Zen Mod View Post
too many posts on too many pages

do you have somewhere proper sch or at least block sch of actual preamp ?

I presume you have shunt reg there ;

if yes , it is hardly that you'll hear too much of difference between solid state and tube rect. , especially if you're using choke in PSU

nevertheless , choke input PSU could be best , in case you have enough ooomphs in xformer secondary

btw - that resistor going from rect. cathode to first pio ; desolder it , put wire bridge instead ;
divide resistor in two halved in value and put them in each anode of rectifier
decrease their value if needed , to have proper voltage on first pio
The 6V6 is built as Salas spec'd it with dual SSHV2 and CCS filament voltage. Sounded angelic. Decided to change PSU, to CLC over CRC, and at same time add, 5U4G Winged "c" blackplate. Too many variables, I know, but it has not improved the circuit. As I said, probably sloppy me and my implementation. Do have parallel 330R resistors before first cap, will break up as you said. Will pursue more slowly now. BTW, you have multiple PM's
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Last edited by buzzforb; 11th April 2012 at 12:44 AM.
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Old 11th April 2012, 12:42 AM   #670
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Originally Posted by Salas View Post
That gato ain't papery. Is a film oily gato, puss in poly boots.
yeah

motor run in audiophool disguise



edit - better to use proper 50uF Icar (Eu side of big splash) or GE (Yank side)

cheaper and bigger

edit edit - I'm not seeing any PM
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Last edited by Zen Mod; 11th April 2012 at 12:46 AM.
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