Twice a month, guitar amp guru Skip Simmons fields your questions on vintage tube amp repair, restoration and collecting. Often hilarious and always insightful,...
It's the 140th episode of the Truth About Vintage Amps podcast, where amp tech Skip Simmons eventually fields your questions on all-things-tube amps! As always, use all advice at your own risk. Want to be a part of our show? Just email us a question or voice memo to [email protected]. Some of the topics discussed this week: 2:35 What's on Skip's Bench: A modified ES-150 Charlie Christian amp with a non-field coil speaker 4:22 Smilin' Skip's: Stuff for Sale 5:15 Loma Rica's Aztec Recording Studio; the Ralph Shine Blues Band; Skip's new guitar; Sylvia Massy (Sylvia's shop); Weed, California; the Fretboard Summit 2025 (register here) 18:01 Our sponsors (and baby goats): Grez Guitars; Emerald City Guitars and Amplified Parts (Jensen speakers are currently on sale!) 23:42: Alamo and other budget amplifiers; the COVID gear boost has deflated 25:35 Amp bargains (look for two transformers); a black panel Super Reverb; Silvertone Twin-Twelve and optocouplers 28:53 The Alembic Pre-Amp in a pedal (or two): Frog Pedals (link); Sushi Box FX (link); Mexican Pizza with Boboli pizza crust; starved plate loads 35:41 PSA: You can buy WD-40 by the gallon 38:22 Should I put the original transformer back in my 1966 Fender Princeton? 44:07 Preferred replacement 12AT7 reverb driver tubes 47:26 Two-prong shock in the studio 50:35 A converted Stromberg-Carlson; speaker-driven effects channel? Rudy Van Gelder; the usable range of a bright cap 57:55 A Plush 3000G tubes and tremolo with a mystery rectifier tube 1:03:08 What's with the lettering on my 1950s Rauland Lyric transformer 1:06:47 Putting a JBL in an Ampeg Rocket 2; a Traynor Studio Mate Hosted by amp tech Skip Simmons and co-hosted/produced by Jason Verlinde of the Fretboard Journal. Don't forget, we have a Patreon page. Join us to get show updates and get to the front of the question line.
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1:08:57
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! Want to be a part of our show? Just email us a question or voice memo to [email protected]. Some of the topics discussed this week: :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); Bruce 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 on 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 Fender Files on YouTube (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 Transformer Corner: Using US amps overseas 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. Don't forget, we have a Patreon page. Join us to get show updates and get to the front of the question line.
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1:22:23
Ep. 138: "Check for Ticks"
It's the 138th episode of the Truth About Vintage Amps podcast, where amp tech Skip Simmons fields your questions on all-things-tube amps! This week, we pay tribute to Angela Instruments founder and former guest Steve Melkisethian (1950-2024); talk resistors and transformers; catch up on the 2024 Fretboard Summit; and much more. Want to be a part of our show? Just email us a question or voice memo to [email protected]. Don't forget, we have a Patreon page. Join us to get show updates and get to the front of the question line. Some of the topics discussed this time around: :58 R.I.P. Nick Gravenites (Electric Flag, Mike Bloomfield) 3:08 Our sponsors: Amplified Parts, Emerald City Guitars, and Grez Guitars. (Watch Emerald City Guitars' Fretboard Summit video here.) 5:32 The 2024 Fretboard Summit in a nutshell 10:29 R.I.P Steve Melkisethian (Angela Instrument); read our tribute here 18:42 R.I.P. Stephen Fitzstephens, member of our Kegger Facebook group 19:18 What was Skip listening to as a kid? 22:08 Skip’s Music vintage gear headed to auction 24:42 When to use old, mismatched resistors? 26:39 The 2003 interview in Vacuum Tube Valley with Steve Carr (PDF link) 27:41 Removing surface rust from transformers 30:27 A 1964 Ampeg Reverberocket that pops when you turn it off 31:10 You all need a Variac 33:03 A pig farm mini-baffler; Papa Murphy’s in a Weber grill 36:56 Dropping the B+ with a solid state rectifier 39:47 Flattening a Fender eyelet board, redux; how to flatten a ‘70s Fender grill cloth frame? 42:52 Aux phono input on a tube amp; replacing plastic knobs; movie recommendation: 'As It Is In Heaven' 46:48 An original 1963 Fender Vibroverb in the UK with a switchable voltage panel; John Kelly amps; Rainer Ptacek 52:33 How to select an output transformer for an amp when you don’t know its specs 1:00:55 The wrong tube in Danelectro amplifiers (12AU6 vs 12AV6) 1:04:02 What’s on Skip’s bench? An Alamo amp; kudos to Larry Chung 1:05:43 Recommended reading: 'The Feather Thief' (Amazon link); TAVA listener and winemaker William Downie (link) 1:10:36 Using Meguiar’s Convertible Top Cleaner to clean up a Premier amp 1:11:35 A Pepco Riviera 725; Frazey Ford 1:14:04 Posters by Serifs & Whiskey (link) 1:15:10 Blossom Valley Foods' Pepper Plant sauce (link) 1:15:37 Fixing a reverb tank by changing the transducer; Fender’s specific use of European tubes Hosted by amp tech Skip Simmons and co-hosted/produced by Jason Verlinde of the Fretboard Journal.
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1:19:49
Ep. 137: "Walk Around the Yard"
It's the 137th episode of the Truth About Vintage Amps podcast, where amp tech Skip Simmons fields your questions on all-things-tube amps! This week, we talk to special guest, Steve Carr of Carr Amplifiers! Want to be a part of our show? Just email us a question or voice memo to [email protected]. Our sponsors: Emerald City Guitars, Amplified Parts, StewMac, and Grez Guitars. Don't forget, we have a Patreon page. And come to the 2024 Fretboard Summit. Some of the topics discussed this time around: 2:22 Steve Carr (Carr Amplifiers) joins us for an enlightening talk about prototyping, speaker cabs, Solen caps, tone controls, and so much more. He even fields a few of your questions! 1:14:17 Big M speaker cabinets 1:16:08 Red Norvo "In a Mist" 1:17:49 Did a rubber tube amp mount just fix my microphonic amp? Easy Brussels sprouts 1:21:45 On the bench: An Epiphone Electar Zephyr 1:23:16 Pre-amps in front of amps that already have pre-amps; the WEM amps used at Live at Pompeii (link); Selmer reverb tanks; was this Philco amp made by Bogen?; pizza stones 1:31:55 Out-of-range potentiometers 1:35:05 Ballast resistors in field coil amps Plus Hurdy gurdys and more.
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1:39:23
Ep. 136: "Release the Curd"
It's the 136th episode of the Truth About Vintage Amps podcast, where amp tech Skip Simmons fields your questions on all-things-tube amps! Want to be a part of our show? Just email us a question or voice memo to [email protected]. Our sponsors: Emerald City Guitars, Amplified Parts, StewMac, and Grez Guitars. Don't forget, we have a Patreon page. Some of the topics discussed this time around: 1:11 A Big Boy locomotive chugs through CA 3:42 What's on Skip's Bench: A Valco/National/Airline amp-in-case; a single-ended Soundmaster PA; a Premier Twin 8 10:55 Another round of TAVA shirts? (coming soon) 13:06 Milkman to produce a JBL K120 replica speaker (link); re-coning by Hempopotamus (and Weber) 16:56 The 2024 Fretboard Summit, featuring Blake Mills, Josh Scott (JHS), Colin Hay and so much more https://fretboardsummit.org (Aug 23-25, 2024 in Chicago) 20:29 The Davis Guitar Scene 20:51 Is there a new speaker comparable to the JBL D130F? Artie Shaw 22:43 VHT amps, redux; homemade cheese 28:05 Why did Leo use RCA plugs for his speaker jacks? 32:20 I miss lo-fi Skip; help me isolate the hum on my Magnatone 410 39:45 Favorite solder; avocado toast 43:26 Recommended movie: 'All That Is Sacred' featuring Tom McGuane, Jim Harrison, Jimmy Buffett, and vintage Key West (link) 44:58 Help me ground my Pepco Riviera 725 48:15 Does the phase inverter tube contribute gain? 49:47 AIMS amplifiers, redux; Don Randall 53:59 Skip (almost) fixes a church organ 1:00:03 Should I wax pot these old output transformers? 1:04:55 Why is there chicken wire in my amplifier? finding the outside foil on a cap Recorded July 25, 2024.
About The Truth About Vintage Amps with Skip Simmons
Twice a month, guitar amp guru Skip Simmons fields your questions on vintage tube amp repair, restoration and collecting. Often hilarious and always insightful, it's like no other guitar podcast out there.
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