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View Poll Results: If you were going to build a OTL amplifier to live with long term
Bruce Rosenblitt T8 OTL 3 10.34%
Flutterman OTL H3-AA, OTL 1 and OTL 3 1 3.45%
Atmasphere M60 or DIY M60 7 24.14%
Andrea Ciuffoli OTL 0 0%
Bruce Rosenblitt The Breast OTL 2 6.90%
Tubetvr OTL 0 0%
Bruce Rosenblitt Glass Audio 1990 OTL 2 6.90%
Tim Mellow OTL 2 6.90%
My own design Totem Pole 1 3.45%
My own design Circlotron 11 37.93%
Voters: 29. You may not vote on this poll

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Old 15th November 2010, 02:35 PM   #1
dwhitf is offline dwhitf  United States
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Default build a OTL (output-transformerless) amplifier

If you were going to build a OTL (output-transformerless) amplifier and you knew you had to live with it long term which one would it be.

This should have been with the last post but I made a mistake.
dwhitf
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Old 29th November 2010, 01:43 AM   #2
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Putting my money where my mouth is, currently acquiring parts to build an Atma-Sphere clone. I expect this to be my "retirement" amp, so I'm trying to do it as well as I know how.

Critical issue is determining which speakers you want to use. OTL's can be picky, especially with speakers that have impedence that varies wildly with frequency. I'm currently looking at some Audiokinesis Planetariums, which seem to be a great match for the OTL.
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Old 29th November 2010, 02:38 PM   #3
cnpope is offline cnpope  United States
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If the Alan Kimmel circlotron had been on your list I would probably have voted for that. I opted for "own design circlotron" as the closest choice.

Chris
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Old 29th November 2010, 03:32 PM   #4
dwhitf is offline dwhitf  United States
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Talking Wanted to add Alan Kimmel circlotron but....

Quote:
Originally Posted by cnpope View Post
If the Alan Kimmel circlotron had been on your list I would probably have voted for that. I opted for "own design circlotron" as the closest choice.

Chris
looking back....

I should have not added so many of Bruce's designs

sorry
dwhitf
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Old 29th November 2010, 03:58 PM   #5
dwhitf is offline dwhitf  United States
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Default Same here....CometCKO my "retirement amp"

Quote:
Originally Posted by CometCKO View Post
Putting my money where my mouth is, currently acquiring parts to build an Atma-Sphere clone. I expect this to be my "retirement" amp, so I'm trying to do it as well as I know how.

Critical issue is determining which speakers you want to use. OTL's can be picky, especially with speakers that have impedence that varies wildly with frequency. I'm currently looking at some Audiokinesis Planetariums, which seem to be a great match for the OTL.
My "retirement" amp" was the reason for the pole to get a idea of what diy guys thought what the best design was without endless experiments.

I too have chosen the Atma-Sphere 12 6AS7 clone from the "What tubes for a tube amp?" thread post #173.

I am building a Dipole speaker system with a H frame woofer about 90db with no dips.

I'm at the parts collecting phase with the amp,I wish I had a primer on the parts to buy (brand) an expensive option (best) and a upgrade option (good).

I'm like a deer in lights on resisters,cap, transformers,chassis, tube sockets,wire,

dwhitf
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