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PostPosted: 18 Jun 2010, 02:25 
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gofar99 wrote:
I would try an IXCP 10M45S instead. It can handle 450 volts and 2-100 ma depending on your not exceeding the max dissipation.

Thanks for the suggestion about the IXCP 10M45S regulator. I looked up the specs.

The regulator looks like it would work, and it's two fewer parts per channel, and it's less expensive. I'll buy a couple and try them out. 100 mA is more than enough for the 6SN7. I'll use the LM317 with the BUX85 on the SIPP power stage since they can handle 1.5 amps (1.5 for the LM317, and 2 amps for the BUX85), but for the driver this looks ideal. :thumbsup:

Cool :lightbuilb:

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PostPosted: 18 Jun 2010, 03:15 
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sampleaccurate wrote:
azazello wrote:
divide aprox. 120 to p.e. 0,6 - 1 v
output signal from CD that will give

p.e.? (Professional Engineer? - yes, I am registered in the state of Nevada as a P.E.)
CD? (compact disc?) - I prefer SACD
Could you write the words out? I don't understand your abbreviations.

Sorry....p.e. = par example - Fr. /I'm registered D.E. in Moscow University MIIT-1977/
CD = player /CD/ / I prefer only CD /

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Hi End is back proportional to the number of composite parts!
Projects: OTL 6AS7 Gen, Electric, SEs 2A3 RCA, 300B JJ, 6S4S, 4P1L, EL11 Telefunken, 6AS7 RCA, 6S33S, 6S41S, 6S19P, PP 6005 Gen. Ellectric , headphone ampl. OTL Loftin White 6AS7 RCA....SE E84L& E80CC Siemens&Tel-n.
http://azazello-sound.blogspot.com/


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PostPosted: 18 Jun 2010, 09:37 
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azazello wrote:
sampleaccurate wrote:
azazello wrote:
divide aprox. 120 to p.e. 0,6 - 1 v
output signal from CD that will give


p.e.? (Professional Engineer? - yes, I am registered in the state of Nevada as a P.E.)
CD? (compact disc?) - I prefer SACD

:confused:

Could you write the words out? I don't understand your abbreviations.

Sorry....p.e. = par example - Fr. /I'm registered D.E. in Moscow University MIIT-1977/
CD = player /CD/ / I prefer only CD /


Thanks. Now I understand. But now I need to know what Fr. and D.E. stand for (France? D? Engineer?) :D

I'm not concerned with the gain of the SIPP. I'm willing to use a pre-tube stage circuit to boost the incoming signal by up to 20dB with an OPA134. That should allow a CD player to drive the amp to full power. Probably even an mp3 player. Plus I have a preamp if I need it. The bottom line is I can feed the amp as strong of a signal as it needs to reach full power and beyond. The OPA134 can provide up to 28 volts to the SIPP when used with a 30 volt supply. All I need is a voltage gain of 8.5 in the SIPP to get 240 volts on the GM70 grid..

I have no problems with high quality op-amps designed specifically for audio used as preamps. In fact, I think they're better than tubes. I think it's the power stage that "makes" a tube amp. If there were an IC that had the same specs as the OPA134 but could output 240 volts I'd use it for a driver, but it doesn't exist! :( SS ICs are only good for low level signals IMHO.

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Last edited by sampleaccurate on 18 Jun 2010, 09:43, edited 1 time in total.

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PostPosted: 18 Jun 2010, 09:42 
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par example - Fr-ance language....OK?
Everyone know what is D.E. after Univercity....and I know perfect russian language and I can read
Tchehov, Tolstoy, Dostoevsky, all russian classics in original language!! :D And Little bit I understand English and French......

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Hi End is back proportional to the number of composite parts!
Projects: OTL 6AS7 Gen, Electric, SEs 2A3 RCA, 300B JJ, 6S4S, 4P1L, EL11 Telefunken, 6AS7 RCA, 6S33S, 6S41S, 6S19P, PP 6005 Gen. Ellectric , headphone ampl. OTL Loftin White 6AS7 RCA....SE E84L& E80CC Siemens&Tel-n.
http://azazello-sound.blogspot.com/


Last edited by azazello on 18 Jun 2010, 09:51, edited 2 times in total.

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PostPosted: 18 Jun 2010, 09:47 
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azazello wrote:
par example - Fr-ance language....OK?

Sorry, I'm not French. :D

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PostPosted: 18 Jun 2010, 09:50 
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I add above some....

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Hi End is back proportional to the number of composite parts!
Projects: OTL 6AS7 Gen, Electric, SEs 2A3 RCA, 300B JJ, 6S4S, 4P1L, EL11 Telefunken, 6AS7 RCA, 6S33S, 6S41S, 6S19P, PP 6005 Gen. Ellectric , headphone ampl. OTL Loftin White 6AS7 RCA....SE E84L& E80CC Siemens&Tel-n.
http://azazello-sound.blogspot.com/


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PostPosted: 18 Jun 2010, 09:55 
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And I'm not too American, Franche, Russian...... :)
and everybody can see my face,,,,

_________________
Hi End is back proportional to the number of composite parts!
Projects: OTL 6AS7 Gen, Electric, SEs 2A3 RCA, 300B JJ, 6S4S, 4P1L, EL11 Telefunken, 6AS7 RCA, 6S33S, 6S41S, 6S19P, PP 6005 Gen. Ellectric , headphone ampl. OTL Loftin White 6AS7 RCA....SE E84L& E80CC Siemens&Tel-n.
http://azazello-sound.blogspot.com/


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PostPosted: 18 Jun 2010, 11:02 
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gofar99 wrote:
You may also want to check out Mu follower stages. They are similar and can be designed to be non-symetrical and in some cases get around the H-C problem.

In the articles I'm reading, the terms SRPP and mu follower are used interchangeably and the circuits are the same as your SRPP. What's the difference? A link would suffice.

Thanks.

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PostPosted: 18 Jun 2010, 11:07 
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Congratulations! From 0 : 2 to 2 : 2 In S.Africa!!

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Hi End is back proportional to the number of composite parts!
Projects: OTL 6AS7 Gen, Electric, SEs 2A3 RCA, 300B JJ, 6S4S, 4P1L, EL11 Telefunken, 6AS7 RCA, 6S33S, 6S41S, 6S19P, PP 6005 Gen. Ellectric , headphone ampl. OTL Loftin White 6AS7 RCA....SE E84L& E80CC Siemens&Tel-n.
http://azazello-sound.blogspot.com/


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PostPosted: 18 Jun 2010, 12:50 
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Joined: 18 Jun 2010, 12:46
Posts: 284
Location: Northern VA
Have you looked at Gary Pimm's CCS loaded Pentodes? Lots of gain and voltage swing.

http://www.pimmlabs.com/web/drivers.htm


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