Vintage Asylum

Here's What I Did

70.121.58.243

tubav

In Reply to: RE: Volume adjust a pain on two mono amps posted by Spantou on December 24, 2020 at 09:26:34

With the front panel of my Eico ST-40. Just veneer with contact cement. Covered up the unused holes after the rebuild. Just volume, 3 input selector, power switch. No phono, tone controls, etc.

Follow Ups:

RE: Here's What I Did - Spantou 21:14:35 12/25/20 (4)
Your wood veneer looks very attractive! Well done! How did you cover up the unused holes?

I own a couple of Eico St70 and St40 and I will keep your suggested "trick" in mind when I rework them.

Unfortunately this veneer application will not work for the Scott 99D, because the front panels, made from ~14 gauge aluminum, were badly bent at the corners.
- RE: Here's What I Did - tubav 07:26:21 12/26/20 (2)
  I just veneered over the holes. I guess I could have done the old masking tape on front and pour epoxy from the back trick but didn't. The middle black strip is thin basswood from the hobby store. Thin styrene would have worked too. Gary Dodd (sadly deceased) did the rebuild. He took it back to the chassis, transformers, and tube sockets. He kept the original circuit but beefed up the power supply. He eliminated tone controls, phono stage, the goofy speaker wiring scheme, etc. Sounds great. Attached is a pic of the underside wiring after he was done.
  - Beautiful work! - Spantou 08:33:20 12/26/20 (1)
    Beautiful work! A joy to look at it. Sorry we lost him.
    
    What output tubes are you using? I'm curious if the modern versions of the 7591 "deliver the goods"
    - RE: Beautiful work! - tubav 14:02:01 12/26/20 (0)
      I'm using vintage 7591 in the amp. On Jim McShane's site he warns that the new ones may not work. I also have a vintage backup quad just in case. I also have a Dynaco SCA-35 that he did. No tone controls, phono stage, etc.
      Sounds great. He did amazing work. If you ever decide to mess with your ST-40, let me know and I'll send the schematic of the power supply mods he did.
- RE: Here's What I Did - rivervalley817 21:34:08 12/25/20 (0)
  automotive bondo + grinder ? shave 'em and save 'em!
  
  Merry Xmas!
  - https://www.3m.com/3M/en_US/company-us/all-3m-products/~/All (Open in New Window)

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