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 NEW  Matt presents bias and operation data for the 6V6 tube in SE operation - 6V6 Single-Ended (SE) Ultra Linear (UL) Bias Optimization.

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It is currently 12 Jul 2020, 17:36

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PostPosted: 16 Feb 2018, 19:43 

Joined: 07 Feb 2017, 19:06
Posts: 51
Location: Canada
HI everyone!
The Power Supply for my CA 651P is really noisy if it is plug-in it makes my tube amp picking up the transformer noise,I have a Hammond 167L24 and Hammond 167L12 transformers can these be use to make a PS for this pre amp?I'am looking for a schematic to build the PS.


PostPosted: 16 Feb 2018, 21:05 
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Joined: 08 Aug 2009, 03:11
Posts: 2229
Location: Chilliwack, BC

Yes, I have had the same problem. The issue is the "Class-2" energy limiting method of core construction.

The Triad "F" series are the quietest transformers I have tested and are pretty good bang for the buck. I'd try a Triad F-216X (Digikey 237-1935-ND) or F-114X (Digikey 237-1901-ND) if I were you.


-= Gregg =-
* Ratings are for transistors - tubes have guidelines*
Home: GeeK ZonE
Work: Classic Valve Design

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