Tubelab SE with 866A mercury vapor rectifiers.
Found this on on the diytube forum board-- too cool!!!!!!!!
Found this on on the diytube forum board-- too cool!!!!!!!!
An externally hosted image should be here but it was not working when we last tested it.
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Hi Guys,
That's my amp. That picture was taken before I built the base. Here's a link to the finished result:
It is a hybrid design - a hand built tubelab SE (no circuit board) and a mercury vapor tube power supply. The OPTs are ElectraPrint. Jack made them for me and they are marvelous. This amp is by far the best one I've built. It's amazing. All the credit goes to George's Power Drive idea. I have it driving a pair of Zaph Audio ZRT's that I built. Wonderful speakers as well. I also have a tubelab SE with George's circuit board that I use in my office. It is a very good sounding amp too.
(Unfortunately I've never been successful linking pictures.)
Best regards,
That's my amp. That picture was taken before I built the base. Here's a link to the finished result:
An externally hosted image should be here but it was not working when we last tested it.
It is a hybrid design - a hand built tubelab SE (no circuit board) and a mercury vapor tube power supply. The OPTs are ElectraPrint. Jack made them for me and they are marvelous. This amp is by far the best one I've built. It's amazing. All the credit goes to George's Power Drive idea. I have it driving a pair of Zaph Audio ZRT's that I built. Wonderful speakers as well. I also have a tubelab SE with George's circuit board that I use in my office. It is a very good sounding amp too.
(Unfortunately I've never been successful linking pictures.)
Best regards,
How much hybrid is it? I see twice as many parts in power supply side so I'm wondering...
Guys,
It's a tubelab SE amplifier with a mercury vapor rectifier power supply instead of the usual power supply as designed in to George's board. I did that just for fun and for something different. From a cost standpoint (it costs a lot more) and probably a performance standpoint it probably doesn't make sense because the power supply probably doesn't have that much effect. But because it looks cool and uses mercury vapor tubes (because I just wanted to use some) I like it and it was a good challenge to do the panel design and build. It certainly sounds better than all my other amps and I have quite a few. Most of the quality of this one is due to George's amplifier design and the OPT's. The amplifier portion is pretty much exactly the same as a tubelab SE. The 417A/300B filaments are DC but use different regulators (2). The power supply is pretty much standard fare for MV tubes. Something similar can be found in Pete Millet's Unnecessarily Complex Amplifier. That was a portion of the inspiration for this amp too.
So it's a mix of a tubelab SE with a much different power supply.
Regards,
It's a tubelab SE amplifier with a mercury vapor rectifier power supply instead of the usual power supply as designed in to George's board. I did that just for fun and for something different. From a cost standpoint (it costs a lot more) and probably a performance standpoint it probably doesn't make sense because the power supply probably doesn't have that much effect. But because it looks cool and uses mercury vapor tubes (because I just wanted to use some) I like it and it was a good challenge to do the panel design and build. It certainly sounds better than all my other amps and I have quite a few. Most of the quality of this one is due to George's amplifier design and the OPT's. The amplifier portion is pretty much exactly the same as a tubelab SE. The 417A/300B filaments are DC but use different regulators (2). The power supply is pretty much standard fare for MV tubes. Something similar can be found in Pete Millet's Unnecessarily Complex Amplifier. That was a portion of the inspiration for this amp too.
So it's a mix of a tubelab SE with a much different power supply.
Regards,
presumably you've got some type of safety cover for the main board in mind?
Nice build - what's the rectifier?
actually, it if wasn't for cramped spacing and heat issues, and the input cap value, the 5U4G would look pretty on the finished chassis
there's something "pinup" pretty about that shape
or
yikes, those show my age
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actually it's the sticker and painted logos I could do without
for those who'd like to custom paint their own (and keep originals for refit to stock), they do now offer raw end bells as accessory
EDCOR Electronics Corporation. DIY Bargains
My Edcor end bells just came today.....
Not only that, but the Edcor VC-125 end bells happen to fit my Hammond 273BX transformers perfectly.
I ordered a couple of pairs of Edcor end bells and the plastic bushings to "upgrade" my hammonds, mostly to get rid of the excess varnish, the knock-out holes, and the overall flimsy Hammond bells. They bolt right up, no mods required.
Not only that, but the Edcor VC-125 end bells happen to fit my Hammond 273BX transformers perfectly.
I ordered a couple of pairs of Edcor end bells and the plastic bushings to "upgrade" my hammonds, mostly to get rid of the excess varnish, the knock-out holes, and the overall flimsy Hammond bells. They bolt right up, no mods required.
After years of reading online reviews on audio gears, I came to the conclusion that the term "fast" is one of the traits of audio Holy Grail.
