Poindexter,
I have a bunch of 6SN7's lying around that I want up to build a preamp with. There was a 6Moons article a while back that pictured the 6SN7 Moebius Linestage you built for Terry Cain. I have seen your 6AQ5 and 6T4 versions, would you be willing to provide insight into the schematic for the 6SN7 version?
Thank you -ALBQ
Link to 6Moons article:
http://www.6moons.com/audioreviews/yamamoto/a08_5.html
I have a bunch of 6SN7's lying around that I want up to build a preamp with. There was a 6Moons article a while back that pictured the 6SN7 Moebius Linestage you built for Terry Cain. I have seen your 6AQ5 and 6T4 versions, would you be willing to provide insight into the schematic for the 6SN7 version?
Thank you -ALBQ
Link to 6Moons article:
http://www.6moons.com/audioreviews/yamamoto/a08_5.html
Okay, here ya go:
Good sound, this; as good as the 6T4 circuit, though it doesn't have the drive. Plenty for tube amps, though.
Aloha,
Poinz
An externally hosted image should be here but it was not working when we last tested it.
Good sound, this; as good as the 6T4 circuit, though it doesn't have the drive. Plenty for tube amps, though.
Aloha,
Poinz
Got it. Is this about right?
Poinz
An externally hosted image should be here but it was not working when we last tested it.
Poinz
Reference Filament Question
JoshK,
No reason really. At this stage, I am really just testing out design ideas I have. I am looking to get a physically small yet very high quality HV and filament supply. This will increase flexibility in case design - low profile is what I want. Also, I need to include the digital control bits, which also takes up space and has its own PS to fit in the case as well. So, for this design, size matters.
* do a search on me and can check out remote control stuff...
From a noise perspective, you really see three flavors of filament supplies in the literature - floating, referenced to HV, referenced to ground and balance pot (AC). This was simply what I choose to wire up.
That said, it is already absolutely dead quiet - no noise at all at any volume pot setting so, at least off to a good start - ideas keep flowing
Thanks and good question - ALBQ
JoshK,
No reason really. At this stage, I am really just testing out design ideas I have. I am looking to get a physically small yet very high quality HV and filament supply. This will increase flexibility in case design - low profile is what I want. Also, I need to include the digital control bits, which also takes up space and has its own PS to fit in the case as well. So, for this design, size matters.
* do a search on me and can check out remote control stuff...
From a noise perspective, you really see three flavors of filament supplies in the literature - floating, referenced to HV, referenced to ground and balance pot (AC). This was simply what I choose to wire up.
That said, it is already absolutely dead quiet - no noise at all at any volume pot setting so, at least off to a good start - ideas keep flowing
Thanks and good question - ALBQ
No, no, Robert; I missed the diode. I went and corrected the one on my server, which is the one that's sourced above. Very embarassing.
Carly, I make 'em in MSPaint. Ask SY, Paint is actually way kewl; very intuitive and simple. The 'secret' is to build an archive of devices and components, and then you can just tinkertoy the circuits together. I've been working on this for ten years now, and I have archives in several sizes, depending on the format. The one above is 'medium'. I give 'em away - if you want one, post me privately and I'll send it over.
Aloha,
Poinz
Carly, I make 'em in MSPaint. Ask SY, Paint is actually way kewl; very intuitive and simple. The 'secret' is to build an archive of devices and components, and then you can just tinkertoy the circuits together. I've been working on this for ten years now, and I have archives in several sizes, depending on the format. The one above is 'medium'. I give 'em away - if you want one, post me privately and I'll send it over.
Aloha,
Poinz
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