From timtub–(at)–ol.com Fri Feb 9 20:16:19 CST 1996
Article: 9411 of alt.guitar.amps
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From: timtub–(at)–ol.com (TimTube)
Newsgroups: alt.guitar.amps
Subject: Re: Eminence “Jensens” in Pro Reverb?
Date: 9 Feb 1996 19:15:43 -0500
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In article <31184C14.A5--(at)--den.com>, brotone
>1. Does anyone have any experience w/ the Eminence-made “Jensen”
>copies that Sovtek/New Sensor is selling? (either the paper or Kapcon
>voice coil versions?) Specifically, how might they sound in a Pro? My
>”project” Pro has some ’80 Eminences in it, and one definitely has a
>dragging voice coil, so I’m figuring to replace them both. Or should I
>just spring for the Mojo’s?
>2. Anyone ever run into a transition-era amp w/ the wrong tube chart
>in it? Mine is a ’68 aluminum-trimmed silver face. While the tube
>chart definitely says AA165, the circuit was definitely AA668 (or
>maybe it’s AB668; I never saw a schematic, only heard about it from a
>friend.) In any case, it had some screw-ball bias circuit and huge
>1500 ohm, 7 watt resistors from cathode to ground on the 6L6’s. Might
>this mixup have happened at the factory, or have I been baited and
>switched? (Actually, it doesn’t really matter, as I have changed
>everything back to b..f specs. I’m just curious.)
>thanks,
All of these Alnico magnet speakers are made by Eminence. The original
speakers in a Pro Reverb were ceramics, Eminence also makes some fine
ceramic replacements, in fact I just sold a pair to a guy for a BF Pro
Reverb, he is delighted.
I have seen quite a few transitional Fender amps with incorrect tube
charts, most notably AB763 (black face) charts on Super Reverbs that had
all of that fine silver face circuitry.
Those are actually 150 ohm resistors, the output section is partially
cathode biased and partially grid biased. If anyone has an explanation for
this I would be most interested.
…Tim
A great amp can make a lousy guitar sound great.
A lousy amp will make a great guitar sound lousy.
