CASE IS IN NICE SHAPE FOR AGE, SOME TOLEX MISSING FROM SIDE, AND INNER LINING SHOWING A LITTLE PADDING, BUT ALL SOLID AND ALL LACTHES WORKING.
BUYER PAYS SHIPPING, CHECKS MUST WAIT 10 DAYS BEFORE SHIPPING.
There still seems to be some confusion about how to distinguish between a silverface Fender amp that has the desirable AB763 circuit and one that has the less-desirable AB568/AC568 circuit.
Part of the confusion stems from the lack of any AB568 or AC568 tube charts.
Our research efforts are now in their fourth year (will it ever end? Part 1 and Part 2 of this series can be found in the March 1997 and November 1997 issues of TCG, respectively.
Again, I would like to thank everyone who responded to our request for data as outlined in Parts 1 and 2.
It’s been over a year since Part 2 of this series was printed, but that’s because I’ve been busy collecting data.
I primarily use it as a practice amp at home, typically at lower volumes, and I’d love to get tones similar to a Fender Tonemaster. Thanks, Leonard Hi Leonard, When a customer brought his Champ 12 in for service years ago, a couple of this amp’s unique “innovations” had me scratching my head.The main focus of this article will be speakers found in Fender amps, but before we get into that topic let’s go over a few other areas first.Early silver face amps: Part 2 went into this topic in some detail, but since that article was printed, I have been asked a of questions about this subject.The 5C1 circuit was extraordinarily simple, using one 6SJ7 pentode in the preamplifier section to provide a single stage of voltage amplification, one 6V6 beam power tetrode in the power amplifier section, a 5Y3 rectifier tube and a single volume knob with no tone controls.By 1955 Fender started putting its amps in the "Narrow Panel" tweed cabinet with a plastic oxblood color grill cloth, circuits used a 12AX7 dual triode in the preamplifier to provide two stages of voltage amplification, and a single 6V6GT power tube to produce about 5 watts.An updated version was introduced in 2006 as part of the "Vintage Modified" line.