Looks factory to me, but I thought the master volumes didn't start until later in the '70s like '76, seller claims it's a '72
clean looking, 4x6l6, JBL D140F
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Looks factory to me, but I thought the master volumes didn't start until later in the '70s like '76, seller claims it's a '72
clean looking, 4x6l6, JBL D140F
I think the earliest Vibrosonic's had the master volume. It was not until the later models that the push pull master volume pot was added. It's the same circuit as the Super six reverb, quad 4 reverb, twin reverb, showman reverb from the same era according to the schematic I found online.
Edit: the only difference was a different output transformer on the Vibrosonic Reverb.
The first MV Fender amps I saw occurred in late 1971 and were the Twin Reverb, Quad Reverb, Dual Showman Reverb, and the Vibrasonic Reverb. The pull-boost feature was added about a year later.
thank you, I didn't know that. I thought it was factory because it looked right but wasn't sure of the history.
I just checked the online 1972 Fender Catalog. Many of the "new" models for that year contained the Master Volume, including the Vibrosonic Reverb. I didn't find a 1971 Catalog, but the 1971 Price List does not show the Super Six, Quad, Vibrosonic, etc. so 1972 appears to be the first year for this new circuit design. Oddly enough, the 1972 Catalog lists the Vibrosonic Reverb, but it is not included in the February 1972 price list. Perhaps an oversite? The January 1973 price list shows the suggested retail price of the Vibrosonic Reverb of $645.
It wouldn't be the first time that Fender's catalogs didn't quite jive with what the upcoming additions to the new model year actually were. When I saw those amps it was early November (of '71) so it's entirely possible that they were in fact '72 models. I do know that the Super Six Reverb was the last of these new amps to be released.Quote:
Originally Posted by Michael Smith
I enjoy looking through the old Fender catalogs and price lists. It gives a pretty good history of when amp models (and guitars) were introduced and disappeared.
Better still, think about which amps turned a profit for Fender and which ones were fiscal turds.
Really doesn't matter. The master volume on those amps didn't do anything anyway.
+1
And the pull-boost switch did even less.