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In Reply to: RE: It has nothing to do with being a purist... posted by viridian on May 25, 2020 at 09:44:58
I believe it would be impossible to find NOS power supply can capacitors identical to the ones used in the 8B. Even if you did, they likely would be bad after sitting on the shelf for decades.
If you bought a '53 Corvette, would you put API SA oil in it just because that is what was used in 1953? No, you'd put in modern grade oil (API SN) to assure long life and better performance (SA oil is why car engines wore out after 60,000 miles years ago). Same thing with replacing parts in an amp or preamp. Keep it as original as possible, but replace the bad parts with good quality modern ones unless you just want it to sit on a shelf.
....to keep it on a shelf. I have been dealing with collectors in Japan, and more recently, South Korea, for over 30 years. There are car collectors that do exactly the same thing. Though, just guessing, it is probably hard to find gas and oil from 1953, LOL, and you really wouldn't want to turn the engine over with that junk in it.
I have access to vintage can caps, and many can be reformed and are functional, but functional and performing to near original specs are miles apart, which is why restuffing can be a very attractive way to keep the original look while still providing a modicum of reliability.
Collecting is just a different part of the hobby. Many on this board deride it, but folks can spend their money any way they want as far as I am concerned. It's fine to appreciate the historical value, aesthetic and provenance of gear without actually wanting to play it. I don't imagine that many people are running down to the 7-11 for a pack of cigarettes in their Locomobiles at this stage of the game.
Restuffing is a major pain, especially with painted cans such as on the 8B. I just mount the new caps inside the chassis. However, I know anal people would have a fit over that. I also know several antique radio collectors who hollow out their old wax capacitors and restuff them. I guess they sleep better at night knowing that the capacitors that no one will ever see look original. To each his own...
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