Radio Road

good!

124.171.70.115

Timbo in Oz

A

In Reply to: RE: Thanks for the info! posted by Cougar on November 11, 2018 at 16:36:43

My current pre-amp USED to be an Allen Wright Electronic FVP aka 4 valve pre!
It used a 12AX7 in CF for its output after the VC. Even the line in tube was!!!!!
???? yep.
It doesn't anymore, it's a 12AU7 in CF mode which are blameless and the line tube is a 12AT7.
It has a BIG, remote, regulated PSU, and it doesn't hum anymore!
Kvyet it is, too!

Warmest

Tim Bailey

Skeptical Measurer & Audio Scrounger

Edits: 11/12/18

Follow Ups:

Nice! - Cougar 17:55:15 11/12/18 (2)
I always wanted to build the Allen Wright FVP5 preamp with the super regulators. I hear that was one very nice sounding preamp along with its phono section!
- I borrowed an FVP5 while my FVP was being done up. - Timbo in Oz 18:16:35 11/12/18 (1)
  Mine is better, the remote PSU being the main factor. The DC HT is regulated and the DC heaters.
  
  The RIAA stage embodies all of AWE's ideas. A mixture of film caps were used.
  
  We didn't go to Vishay laser trimmed Rs, but did use some Holcos for RIAA, IIRC the rest are 1% selected MFs with twice the wattage of the originals. Same wit the RIAA stage.
  
  This helps with noise, I'm told.
  
  It's in a QUAD 22 box, so no room for a PSU anyway!
  
  The VC is an ALPs
  
  Warmest
  
  Tim Bailey
  
  Skeptical Measurer & Audio Scrounger
  - IME simpler is always better, with pre-amps, so long as you get it quiet. - Timbo in Oz 00:45:58 11/17/18 (0)
    Switching absolute polarity from the listening seat, is far better than walking over to the pre-amp and back to yr seat.
    
    So, I do it at spkr/power level.
    
    Warmest
    
    Tim Bailey
    
    Skeptical Measurer & Audio Scrounger

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