Have You Used Rod Coleman Filament Regulators & Ale Bartola Gyrators?

BenjaminSmith · 1488

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Offline BenjaminSmith

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on: August 24, 2022, 06:00:55 AM
Does anyone in the greater Puget Sound have experience with Rod's regulators/raw DC supplies or Ale Bartola's gyrator boards? I'm working on a CX371a preamp using both components and having the devil of a time tracking down some noise issues. A little in-person troubleshooting help would be hugely appreciated - I'm a newbie to design and a mechanical engineer to boot, so designing and building this preamp is analogous to learning a foreign language without hearing anyone speak it. I'm happy to compensate you for your time. 

And if this is too far afield for the Bottlehead Forums I'll take it down.
« Last Edit: August 24, 2022, 06:07:52 AM by BenjaminSmith »

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Sony A7RIII
Martin Logan SL3/Meridian transport/Bel Canto DAC & power
Cain&Cain Abbys S/Ns 001 and 002

Offline Paul Birkeland

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Reply #1 on: August 24, 2022, 06:09:38 AM
What kind of noise are you experiencing?

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline BenjaminSmith

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Reply #2 on: August 24, 2022, 06:14:44 AM
I'll pm you some scope screen shots, and thank you.

Toys in no particular order:
1975 BMW 2002
Sony A7RIII
Martin Logan SL3/Meridian transport/Bel Canto DAC & power
Cain&Cain Abbys S/Ns 001 and 002

Offline Tubegopher

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Reply #3 on: August 24, 2022, 06:32:02 PM
Benjamin, your work looks excellent. Your finish on your stunning enclosure is also excellent.
If there is anyone that can help you on your question... It is Paul Birkeland. He will handle it.
Regards,
Don

300B amps with 6SJ7 in Triode mode, dc fil. volt. for 300Bs. BeePre with Bill Milosz built Eros Phono. Teres Turntable, Pete Riggle "12 inch Woody Tonearm" Grace F9  with Soundsmith ruby cantilever stylus.Cambridge Audio CD with MHDT Labs Orchid DAC Rega NAOS Spkrs, Atelier Rullit super tweeters

Offline mcandmar

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Reply #4 on: August 25, 2022, 12:21:28 AM
Use a very similar setup myself, Ale's gyrator boards & Rods filament regulators in a CX301 preamp.  As Paul asks, what are we talking about when you say noise?

P.S. your regulator boards are very different, are those a new design?

M.McCandless

Offline BenjaminSmith

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Reply #5 on: August 25, 2022, 08:05:51 AM
Quote from: mcandmar on August 25, 2022, 12:21:28 AM
P.S. your regulator boards are very different, are those a new design?

these are the rev 08 boards, yes!

Toys in no particular order:
1975 BMW 2002
Sony A7RIII
Martin Logan SL3/Meridian transport/Bel Canto DAC & power
Cain&Cain Abbys S/Ns 001 and 002

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