I am going through a "use it or sell it!" phase! I have the major components to build Barbour's SV811-10 monoblock amps, AudioNote PT's, Electra-Print E18B SE OPT's and Transcendar chokes. I have a pair of SV811-10's and a few 6EM7 and 6EA7's. So a parts bin build seems pretty doable!
I have the Vacuum Tube Valley article covering the later revisions, but would like to read the original Glass Audio articles. (Glass Audio Volume 8, Number 3 (1996) and Volume 9, Number 5 (1997)) Anyone have access to those articles that they could share? I would really like to read the foundational work.
There was a thread a couple of years ago about a build and another person starting a build, but no follow-ups noting completion. I had an audio buddy in the San Francisco Bay Area build out the amps with the OBT-2 OPT's and military PT's. Sadly, he has passed. We both had Electro Voice Senty IVA horn speakers. (I still do, with major reworks!) I recall that I was really impressed with the Barbour amps when I heard them. Not quite the mid range of a 300B, but much better bass and dynamics.
Cheers,
Geary
I have the Vacuum Tube Valley article covering the later revisions, but would like to read the original Glass Audio articles. (Glass Audio Volume 8, Number 3 (1996) and Volume 9, Number 5 (1997)) Anyone have access to those articles that they could share? I would really like to read the foundational work.
There was a thread a couple of years ago about a build and another person starting a build, but no follow-ups noting completion. I had an audio buddy in the San Francisco Bay Area build out the amps with the OBT-2 OPT's and military PT's. Sadly, he has passed. We both had Electro Voice Senty IVA horn speakers. (I still do, with major reworks!) I recall that I was really impressed with the Barbour amps when I heard them. Not quite the mid range of a 300B, but much better bass and dynamics.
Cheers,
Geary
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Galyons, I have a digital copy of the no. 3 -1996 issue. PM me and I will send it. I live up the road in Auburn. Bill
The articles are most helpful! I was great to follow Barbour's thought process from genesis to final thoughts. I am excited that this will be, excepting specific resistors, entirely a parts bin build. That is a first!
If anyone else has built the amp I would appreciate your thoughts and comments.
Cheers,
Geary
If anyone else has built the amp I would appreciate your thoughts and comments.
Cheers,
Geary
I have built these amps ten years ago. I used schematic from VTV, Lundahl output transformer and Hammond power trans and chokes. I'm going to order SV-811's soon, now I use SV572's.
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Anyways, are those '-10' versions still available?
They are way different from the regular 811/572.
Mu 10 VS mu 160.
Anyways, are those '-10' versions still available?
They are way different from the regular 811/572.
Mu 10 VS mu 160.
I'm sorry to say that I was little disappointed of the sound first, especially because the amount of money invested. Upgrading Hammond OPT:s to the Lundahls helped little and soon I will try SV811's, I have read many reports that they are better in this circuit.
here is the schematic
SV811/SV572 SE1
That schematic is the RC coupled variant. But its using the SV811-10 at the Zero Bias point. Adapting this to use it with an Interstage ought to be easy. I dont know the specs on your electra-print Interstage, but if it is similar to ones I have - a 6V6 wired in Triode, or a 6AH4GT will be a good fit....
SV811/SV572 SE1
That schematic is the RC coupled variant. But its using the SV811-10 at the Zero Bias point. Adapting this to use it with an Interstage ought to be easy. I dont know the specs on your electra-print Interstage, but if it is similar to ones I have - a 6V6 wired in Triode, or a 6AH4GT will be a good fit....
What kind of power output does it produce with 500v , I recalled reading way back that the wake up call for Sv811 series is around 700-800v for it to sound really good. Not questioning Eric Barbour's design off course. LOL
Thanks
Thanks