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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: I want to make an EICO HF81 or Rogers clone, sans preamp posted by DAK on August 11, 2017 at 20:35:06:
Low gain hi-GM drivers, and two TT input tubes switchable from balanced to SE.
A BIG PSU - without valve rectifiers - and as little global NFB as possible, yet enough around the OPT stage to get the OPTZ below 1-2 ohms down to about 100-50 Hz,
But still sounds good.
Warmest
Tim Bailey
Skeptical Measurer & Audio Scrounger
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Follow Ups
- why not build an 'idealised design' PP EL84M amp? - Timbo in Oz 08/12/1702:40:42 08/12/17 (11)
- RE: why not build an 'idealised design' PP EL84M amp? - DAK 02:49:39 08/12/17 (10)
- Do you know the make and model of the donor amp? - Ivan303 08:11:01 08/12/17 (9)
- Maybe Admiral? - DAK 09:30:34 08/12/17 (8)
- A 12AX7 as splitter? bad idea, way too much gain - Timbo in Oz 00:09:03 08/14/17 (6)
- No Gain if It's a Cathodyne - Triode_Kingdom 05:28:22 08/14/17 (5)
- I know, my LEAK St20s now sound a LOT better with a 6CG7 in that role, in LTP with a FET CCS. - Timbo in Oz 14:50:50 08/14/17 (0)
- Cathodyne (Concertina) PI in Fender Princeton amps - FenderLover 07:54:35 08/14/17 (3)
- Tone? we're talking about a hi-fi amp, aren't we? - Timbo in Oz 15:10:39 08/14/17 (2)
- Actually, I'm kinda agreeing with you... - FenderLover 19:40:24 08/14/17 (1)
- Interesting,... - Salectric 11:54:38 08/16/17 (0)
- RE: Maybe Admiral? - Eli Duttman 12:15:58 08/12/17 (0)
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