Dating silverface deluxe reverb
Fender switched back to the blackface era cosmetics some time in 1980.Twin Reverbs produced between late 19 have a black control panel and silver sparkle grille cloth.He co-founded and was originally the principal designer for Budda Amplification, though he launched EAST Amplification (eastamplification.com) in 2010.You can catch his podcasts at or email him at [email protected] boost is activated via a master volume control with a push/pull switch. From the most unlikely of places: the reverb drive signal!The reverb drive circuit in most tube-driven reverb amps is actually similar to a small, low-power, single-end output stage.Model/Circuit Number: AC568, AA769, AA270 Years of Production: 1968 – 1982 Era: Silverface Configuration: Combo Controls: Silver, forward facing w/ blue labels Knobs: Black skirted w/ chrome center, numbered 1 – 10 Faceplate Bias: Fixed, adjustment pot or balance pot Rectifier: Solid State Comments: A master volume was added in 1972.Other late seventies circuit changes included a Line Out jack, hum balance pot, and a pull boost sw.
The next change was the addition of a master volume control in 1972. Now, having a master volume control on a Fender Twin Reverb, or most any other Fender amp of this era, seems like a useless addition.But instead of being connected to a speaker, the output of the transformer in the reverb drive circuit is fed to a transducer in the reverb pan.It’s similar to a speaker, except instead of driving a cone, it drives a spring. In reality, the result was far from stellar, and I’m not sure I know anyone who actually uses this feature.I just got a ’70s silverface Fender Twin Reverb that needs a little TLC.Surfing the various forums, I’ve learned that this master-volume edition of the Twin is one of the most (unfairly, to me) maligned designs.
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Thanks, John Gilbert Matt Alcott Hi John, The Twin Reverb design has been through many iterations since its 1963 debut.