Tube Headphone Amp

sorenj07 · 30th January 2008, 07:26 AM

If you're in the Boston area, feel free to come by and give it a listen. I also have my just finished EL84 triode PP amp hooked up to some Cerwin Vega D-7's and a modded PS1.

http://boston.craigslist.org/gbs/ele/556136975.html

p.s. price is not quiiiite as firm when it's guys from my forums

Ciscokid · 30th January 2008, 01:26 PM

Hi,
Cool looking amp! Do you have a schematic to share?

Kind regards,
ck

sorenj07 · 30th January 2008, 05:42 PM

sure, I do.

sorenj07 · 30th January 2008, 07:01 PM

sale pending...

sorenj07 · 9th February 2008, 07:50 PM

Sale fell through, amp is still available

new CL ad:
http://boston.craigslist.org/gbs/ele/568484943.html

thanks!

motherone · 10th February 2008, 09:38 PM

Nice amp! Could you share the PSU schematic and who the transformers are from?

sorenj07 · 12th February 2008, 03:35 AM

Thanks! I'm not sure I can find the schematic but I remember it well enough off the top of my head. The transformers are two 6.3VCT 6A Hammond models, which I took apart. I stripped the bells, painted them orange, and then clearcoated. The PSU consists of one transformer feeding the three heaters, then feeding back-to-front intot the other transformer, which has a doubler on the 120V "secondary" with UF4007's and 100uF caps. There's a LC filter with 10H/550uF, which feeds the WCF B+, then stereo split RC filters for the GC stage which direct couples into the WCF. Makes more sense when drawn out but that's what it is.. All electrolytics except those in the doubler are bypassed with Solens.

30th January 2008, 07:26 AM	#1
sorenj07 diyAudio Member Join Date: May 2006	Tube Headphone Amp If you're in the Boston area, feel free to come by and give it a listen. I also have my just finished EL84 triode PP amp hooked up to some Cerwin Vega D-7's and a modded PS1. http://boston.craigslist.org/gbs/ele/556136975.html p.s. price is not quiiiite as firm when it's guys from my forums

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30th January 2008, 01:26 PM	#2
Ciscokid diyAudio Member Join Date: Sep 2002 Location: Memphis, TN	Hi, Cool looking amp! Do you have a schematic to share? Kind regards, ck

30th January 2008, 05:42 PM	#3
sorenj07 diyAudio Member Join Date: May 2006	sure, I do.

30th January 2008, 07:01 PM	#4
sorenj07 diyAudio Member Join Date: May 2006	sale pending...

9th February 2008, 07:50 PM	#5
sorenj07 diyAudio Member Join Date: May 2006	Sale fell through, amp is still available new CL ad: http://boston.craigslist.org/gbs/ele/568484943.html thanks!

10th February 2008, 09:38 PM	#6
motherone diyAudio Member Join Date: Apr 2003 Location: Seattle	Nice amp! Could you share the PSU schematic and who the transformers are from?

12th February 2008, 03:35 AM	#7
sorenj07 diyAudio Member Join Date: May 2006	Thanks! I'm not sure I can find the schematic but I remember it well enough off the top of my head. The transformers are two 6.3VCT 6A Hammond models, which I took apart. I stripped the bells, painted them orange, and then clearcoated. The PSU consists of one transformer feeding the three heaters, then feeding back-to-front intot the other transformer, which has a doubler on the 120V "secondary" with UF4007's and 100uF caps. There's a LC filter with 10H/550uF, which feeds the WCF B+, then stereo split RC filters for the GC stage which direct couples into the WCF. Makes more sense when drawn out but that's what it is.. All electrolytics except those in the doubler are bypassed with Solens.

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