From detritu–(at)–x.netcom.com Tue Jun 3 11:58:06 CDT 1997
Article: 51836 of alt.guitar.amps
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From: detritu–(at)–x.netcom.com(Lord Valve)
Newsgroups: alt.guitar.amps
Subject: Re: Problems with my ’68 Super
Date: 3 Jun 1997 06:26:21 GMT
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In <19970602180100.OAA1038--(at)--adder02.news.aol.com> axeis–(at)–ol.com
(AXEIST) writes:
(weird stuff snipped)

Lord Valve Speaketh:
I think I posted on this before…but I’ll give it another shot. Many
SF Super Reverbs had a 470 ohm cathode resistor installed on the reverb
drive tube, with no bypass cap. Change the 470 ohm to a 1.5K or 2.2K
1-watt metalfilm. The 470 ohm value runs the tube WAY hot; some of the
NOS 12AT7s can survive like that for awhile, but if you put one of
those Chinese 12AT7s in there, it’ll die pronto. Those popping noises
you’re hearing are probably the sound of the reverb drive tube burning
itself to a crisp.

Lord Valve