Tweakers' Asylum

I'm finding the "how"...

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1973shovel

A

In Reply to: RE: No. (nt) posted by Tre' on June 15, 2021 at 21:05:13

...but nothing on the "why". Apparently John Curl thought there was a positive result from the late Mr. Crump's mod though.

One of my tube preamps may be regaining some lost real estate if the new, much smaller, B+ regulator works out. That will allow me to install a physically larger, hopefully better, pot or attenuator than the Alps blue I've been using for years.

The phono section needs to see 250K though, which is why I was curious if the Crump mod increased the impedance.

I'll do more searching on the subject.

Follow Ups:

RE: I'm finding the "how"... - Tre' 15:28:01 07/01/21 (3)
Bob was an interesting man.
At T.H.E. Show, 2000 Las Vegas.
He and John were in the room next door to where we were showing our OTL amplifier. VPI was handing out turntables to anyone who wanted them. Elliott was following up to do the set up.
Well, he messed up Bob's. He didn't add enough damping fluid to do anything and the platter was crooked.
Bob threatened to throw the turntable into the pool. He was going on and on about what a piece of S___ it was, etc. I grabbed the damping fluid and an Allen wrench.
John said I saved the turntable. He said Bob would have thrown it into the pool for sure.
Fun memories.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"

Edits: 07/01/21 07/01/21
- RE: I'm finding the "how"... - fastcat 18:21:48 07/01/21 (2)
  I have read that Bob was very good with picking particular
  components for the sound quality they produced - for the
  circuits that John designed. Do you know anything about
  all that, or how Bob got to be so good at that?
  - He could hear the differences - driver 19:18:10 07/02/21 (0)
    I guess it comes down to his exceptional hearing & experimentation. I made a bunch of raw cables for Bob, which he then terminated himself. I was cautioned (by my boss) to make sure I always oriented the cables off the spool, because he could tell if one was reversed. Bob helped me tweak my soldering skills too.
  - RE: I'm finding the "how"... - Tre' 12:26:40 07/02/21 (0)
    No. My only contact with Bob was for that two day show.
    
    He was funny though.
    
    Tre'
    Have Fun and Enjoy the Music
    "Still Working the Problem"

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