Ep. 139: "I'm Going Negative"
It's the 139th episode of the Truth About Vintage Amps podcast, where amp tech Skip Simmons fields your questions on all-things-tube amps!\xa0
Want to be a part of our show? Just email us a question or voice memo to podcast@fretboardjournal.com.
Some of the topics discussed this week:\xa0
:48 On the bench: A 1974 Alembic pre-amp, a Showman head in disguise
3:58 Webb's Music and a hang gliding pioneer
6:08 Our sponsors: Grez Guitars; Emerald City Guitars and Amplified Parts; the Wood Wire & Volts Show in Anaheim (link);\xa0Bruce Harvie of Orcas Island Tonewoods
11:10 Skip has a warning for the TAVA Kegger Facebook group...and others
14:38 A luthiers' pet peeve
16:55 Bias modulating tremolo, intensity pots
20:45 Skip works\xa0on a Dan Torres-modded amp
21:35 Jason screens his Ben Harper Dumble film in Seattle; Ben Harper on TAVA (ep. 118)
25:34 When does Skip use his tube tester?
28:17 Should I turn this jukebox amp into a guitar amp?
30:52 A monitor out a la GA17RVT; Quilter amps; full-fat Greek yogurt
36:24 When do we get a Marshall/Vox expert on the show?
37:58 A Kroker Triple Toad amp
40:13 Warming up a Nat Daniel-designed amp; separately mounted pre-amp tubes
42:17 Late '60s Fender biasing (AC568)
43:54 Skip's new guitar: A 1966 Fender Duo-Sonic
49:51 The\xa0Fender Files on YouTube\xa0(thanks, Larry Chung)
52:17 Using 5V4 rectifier tubes in a Matchless DC-30; Nduja mayonnaise (link)
1:00:17 Recommended reading: "There Are No Electrons: Electronics for Earthlings" (Amazon link); subbing a 6SL7 for a 6SN7 in a Gibson BR9
1:02:42\xa0Transformer Corner: Using US amps overseas \xa0
1:11:07 Recommended music: Henry Kaiser & David Lindley's "Sweet Sunny North;" Steve Melkisethian remembered
1:13:01 A cheap and easy output transformer dynamic test; rebuilding reverb tanks
1:19:54 Skip's map collection
Hosted by amp tech Skip Simmons and co-hosted/produced by Jason Verlinde of the Fretboard Journal.\xa0
Don't forget, we have a\xa0Patreon page. Join us to get show updates and get to the front of the question line.\xa0