JustinJohn wrote:Jerry's main amp through the 80s was a heavily modified 1971 (silverface) Twin Reverb... I'm pretty sure.
JamminJommy wrote:JustinJohn wrote:Jerry's main amp through the 80s was a heavily modified 1971 (silverface) Twin Reverb... I'm pretty sure.
"Heavily Modified" can be a bit ambiguous. I had the pleasure of playing through an authentic "Alembicized" '69 SF twin that sounded a little more than just "in the ballpark." When I asked its caretaker about mods, he informed me that all the values were stock, just the parts were upgraded where an upgrade was available.
What makes the pre master volume Twins special is the occasional oversized hunk of iron in there (a little bigger than a BF transformer). I wanna say late '69 through early '70 Fender was doing that so with all of that in mind (and the above mentioned faceplate) I believe it was actually a 69-70. The Dead simply wanted the highest fidelity, longest lasting, toughest equipment available, and Mil-Spec'ing (Alembicizing) an amp would accomplish that.
My two cents!
waldo041 wrote:Healy dropped Alembic early and specifically asks not to be associated with them. However, Owlsey and Healy are the sources for the actual "Alembicization" modifications. That said, there is more done to a Jerry Healy twin amp then a standard Alembic amp. Jerry's silverface also is believed to be a 69 - AA270 and would NOT have had neither a blackface or silverface stock Power Transformer, his Twins had the Export Power Transformer.
JustinJohn wrote:waldo041 wrote:Waldo, I only use my twin's preamp section... Would modding it with an export power transformer (similar to Jerry's alleged 69' silverface twin) change tone, or is it a power-section mod?
(pardon my ignorance... I dont know a lot about the specifics of this stuff... )
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