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May 2014
Jeff Bober

Jeff Bober

Jeff Bober is one of the godfathers of the low-wattage amp revolution. 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 ampsandaxescast.com or email him at pgampman@gmail.com.

ARTICLES

Ask Amp Man: From Silverfaces to Silvertones

March 24, 2014
Making sense of the external speaker jacks on vintage Fenders—and resurrecting a cool old Silvertone.
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Ask Amp Man: The Vibro Champ Voltage Mystery

February 13, 2014
Why do the schematics differ between two supposedly identical CBS-era Fender amps?
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Ask Amp Man: Better Tones from “Boomy” Tweed Deluxes

January 9, 2014
Fender’s classic 5E3 circuit is prone to “flubbiness” at high volumes. Here are several easy fixes.
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Ask Amp Man: Better Biasing for Silverface Twin Reverbs

December 9, 2013
Blackface-style biasing makes it easier to set up and service ’70s Twin Reverbs.
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Ask Amp Man: Twintervention (aka Rescuing Rotten Twin Reverbs)

November 13, 2013
Master-volume Twin Reverbs of the ’70s have a deservedly bad reputation—but a few circuit tweaks can save them.
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Ask Amp Man: The Early-’70s Silverface Fender Twin Reverb: Dud or Dynamo?

October 15, 2013
Why don’t master-volume Twin Reverbs get any respect?
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Ask Amp Man: Pumping Up an ’80s Fender Champ

September 20, 2013
These simple mods can nudge a Fender Champ toward a more Marshall-like sound, with increased mids, greater headroom, and improved overdrive tones.
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Ask Amp Man: Upgrades for Silvertone and Fender Hot Rod Amps

August 13, 2013
This month we look at changing the gain structure on a Silvertone and dealing with volume fluctuations in a Fender Hot Rod Deluxe.
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Identifying Vintage Fender Speakers — and Battling Hum

July 29, 2013
What kind of speaker is in a 1965 Deluxe Reverb, and how to switch it out without increasing the amp's volume, plus tackling hum in modern Fender combos.
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