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Old 6th January 2013, 10:12 AM   #1371
Salas is online now Salas  Greece
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I had built with resistive load non bootstrap and bootstrap and I kept the latter with Teflon input. Its easy for anybody to make the configs and check preference in own system and taste anyway. Tnx for the virtual pots.
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Old 6th January 2013, 10:32 AM   #1372
stajo is offline stajo  Sweden
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LL1668 gapped 50 mA maybe http://www.lundahl.se/pdfs/datash/1667_68.pdf windings in series 100H 680 DCR
http://www.diyparadiso.com/price/transfo/LLchoke.htm

Last edited by stajo; 6th January 2013 at 10:45 AM.
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Old 6th January 2013, 11:05 AM   #1373
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Hey Salas,

I donīt understand:

"with resistive load non bootstrap"

Can not work without severe distortion.

Stajo,

1668 was actually one of the std chokes I had in mind.
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Old 6th January 2013, 11:33 AM   #1374
Salas is online now Salas  Greece
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It can at low bias current and highish amp load. At about -60dB THD for ~6VPP.
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Old 6th January 2013, 11:40 AM   #1375
stajo is offline stajo  Sweden
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Heres the breadboarded circuit for starters. By an incident I already had it on my breadboard. Now letz see if I can warp up a PSU b4 the kids storm the barn. 115 H 950 DCR Hinchley chokes (robbed from Perka, Lars.
Click the image to open in full size.

Staffan

Last edited by stajo; 6th January 2013 at 11:55 AM.
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Old 24th January 2013, 08:56 PM   #1376
stajo is offline stajo  Sweden
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Well I choosed to make a "livingroom proto" instead since I have kids running around. I'm always nervous mounting touchable HV stuff in the livingroom. I made it like a AZ1 - 30 uF motorrun - 10H - 50 uF motorrun common chassie and then I made some plates to fit for different configs.
Click the image to open in full size.
First out is the 6V6 chokeloaded CF. It sticks a 2,2R and double 47 uF for each channel. Abour 255 on the anode.
Click the image to open in full size.
It playes right now and it has a clearly stiffer bass then my former passive. Nice voices too but still a hum and some other disturbances. 99 dB speakers is not nice to me. I will clear up the hum and get back to you with some measurements once I get sober. It will happen any month now.

Best
Staffan
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Old 24th January 2013, 09:03 PM   #1377
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My new speakers I'll be HE Altec based setup. In this situation is Cf recommeneded over standard. It will be driving variety is pass amps ranging from 15-20dB of gain.
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Old 24th January 2013, 09:03 PM   #1378
stajo is offline stajo  Sweden
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Forgot to mention: its 115 H Hinchely chokes on the katode. About 930isch dcr if I remember correctly.
Click the image to open in full size.
made roome for some VRs to or a SSHV2 maybe

/S
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Old 24th January 2013, 09:12 PM   #1379
stajo is offline stajo  Sweden
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Quote:
Originally Posted by buzzforb View Post
My new speakers I'll be HE Altec based setup. In this situation is Cf recommeneded over standard. It will be driving variety is pass amps ranging from 15-20dB of gain.
I think this is promising. Thing is that carefulness is needed around a clean ground to, since its a CF. I will up an LL common mode choke b4 anode and ground but I'm not that sure how to mount it in the C-L-C-L-C chain. What happen if I mount it between the last C-C? Can that cause grounding issues? Well, I'll try and find out

/S
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Old 24th January 2013, 09:15 PM   #1380
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Those tubes look kinds smoky Did you compare to modern version yet?

Nice job, BTW.

I got these for my rebuild. Thinking about getting BudP to wind me some for the load
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Last edited by buzzforb; 24th January 2013 at 09:22 PM.
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