The Truth About Vintage Amps Podcast: Big Index Page

January 2020

By popular demand (well, at least one of you asked for it), a growing index of topics found on the Truth About Vintage Amps…  

Episode 1
-Restoring a Gibson “Charlie Christian” amp from the ’30s/’40s
-Repairing amps on a drawbridge
-60Hz/50Hz hum
-Troubleshooting amps
-Solid-state rectifiers
-Recommended new vacuum tubes for amps
-The magic behind Alexander Dumble
-Skip’s influences (Les Paul, Jack Darr, Steve Melkisethian/ Angela Instruments, Earl Yarrow)

Episode 2

-Safe, long-term storage of tube amps
-The magic behind tube Standel amps
-Calculating the exact wattage of an amp
-Good “goos” (and how to fix a torn speaker)
-Paul Rivera-era Fenders
-The Kalamazoo Model 2
-The modern tube marketplace
-Simple tube amp maintenance anyone can do
-The limits of safely mismatching speakers to a stated amp load

Episode 3

-The death of guitar shows
-The Truth About Vintage Amps rant on Skip’s website
-Why you may not need a three-prong plug on your amp
-The “death cap” and the magic behind certain capacitors
-Modifying non-MASCO P/A heads as guitar amps
-Inheriting and maintaining a ’65 Super Reverb
-Amp biasing
-Learning how to read a schematic

Episode 4 

-Different aftermarket speaker options for a Fender Champ
-The dangers of working on vintage amplifiers
-What to look for when shopping for a vintage guitar amp
-A perplexing 2000-era Gibson amplifier
-Output transformers in a Silverton 1481
-Carbon comp resistors versus metal film
-The value of an DIY amp kit
-“Converting” a Knight (or Bogen) vocal PA head into a guitar amp

Episode 5 

-Spring Reverb, 101: How does it work, how to fix it
-Grounding tips
-Skip’s recommended multimeters and soldering irons
-Using vintage US-made amps overseas
-Making a 1968 Fender Super Reverb a little less loud
-Breaking in a new speaker
-Gigging with a ’58 Fender Vibrolux
-Octal tubes
-Skip’s thoughts on DIY amp kits

Episode 6

-Modding a Silverface Fender Champ
-Buying a good speaker wiring harnesses
-Keeping seldom-used guitar amps in usable shape
-Groundbreaking amplifiers through history
-The standby switch (again!)
-Craigslist shopping tips
-Replacement fuses
-A 1948 Gibson BR6 with an unusual chasis mount
-The explosive proliferation of effects pedals
-Wet/dry rigs and recommendations for an A/B box
-Tips on buying NOS vacuum tubes
-Discovering a Coastwise Electronics Model 310 amplifier
-Replacement tubes for a hand-wired Vox AC30
-Buying a transformer for a 5E3 Tweed Deluxe amp kit

Episode 7

-Dick Dale and the Fender Showman amp
-The differences between Fender Tweed, Brownface, Blackface and Silverface amps
-Noise floor: What’s acceptable, what indicates an amp problem
-Broken tube pins
-Using amps in stereo (safely)
-Toroidal power transformers
-Thoughts on the Universal Audio Ox attenuator and attenuators in general
-Using a Fender Champ as a tube tester
-The “bright cap mod” on a Fender Deluxe Reverb
-Skip’s mods to the Silverface Champ circuit
-Building your own kit amp
-Achieving the sound of Billy Childish without a Selmer Triumph Reverb
-Replacement bass amp speakers

Episode 8

-Skip replies to a critic of his WD-40 hack
-Jason’s Gibson EH-150 amp needs help
-An answer to last week’s Silverface Fender Champ baffler
-Speaker re-coning recommendations
-A buggy reissue Gibson GA-20 prototype
-Recommendations for a baritone guitar player
-Protecting an amp from the elements in damp Southeast Texas
-Running a Traynor head (or any head) on only one power tube
-Can you break an amp through loud playing/boost/effects?
-Making a reissue Blackface Deluxe Reverb sound vintage
-How to buy pre-amp tubes online
-Alternative chasis materials
-Fitting bigger speakers in a Champ cab
-Capturing the sound of Billy Childish (again)
-A ’60s Gibson Skylark with numerous issues
-A new amp baffler

Episode 9 

-Skip takes care of a baby goat
-Who was Ray Massie (the answer to this week’s baffler)
-A Clavioline needs TLC
-Identifying a tube when you have no schematic
-The affect a speaker size has on even the smallest amps
-The Garnet Herzog mod
-The different tremolo circuit between a Blackface Deluxe Reverb and a Blackface Princeton Reverb
-Tube amp touring advice (including the often-asked, ‘Which way do I lie my amp down in the van’ question)
-Baffle board construction
-RAW switches
-Radio noise in a Fender reverb unit
-Removing tube covers
-A funky Gregory Mark XX
-Skip offers a music recommendation

Episode 10 

:22 Skip and Jason discuss possible Truth About Vintage Amps t-shirt designs (coming soon)
2:55 Jason and Skip discuss the Fretboard Journal (modified) Fender  Champ
4:26 How to install a quarter-inch output into a Champ with an RCA speaker connector
6:02 Recommended solder
8:00 Our first sponsor – Grez Guitars!
10:26 Our new Instagram page!
10:54 This week’s Baffler
12:08 A walk-through of the Fender Champ 5F1 schematic (available online, print it out)
21:10 Wall power fluctuations
26:38 Recommended tube amps for acoustic guitars
33:05 Father’s Day and the Tweed Deluxe
36:05 BB King’s Gibson Lab Series (solid state) amp
38:26 A yard-sale find pre-war Rickenbaker amp and a dim bulb current limiter
41:14 Stew-Mac’s Snufferstick, Part One
44:00 Leaning a tube amp on its stand – good or bad?
46:30 A noisy Fender silverface Princeton
49:26 Boutique amps
51:54 Recommended new components
55:22 Snufferstick, Part Two
59:40 Capturing that Champ distortion with a louder amp (and a shoutout to Tim Foster)
1:03:26 Manitoba’s Johnson Sound System amplifiers
1:06:30 Replacing old can power capacitors cleanly
1:15:15 Recommended bigger speakers / impedance for a Fender Champ
1:18:38 Converting an old Hammond AO-39 organ reverb amp to a guitar amp
1:27:15 A 1957 Fender 5F4 Super amp with an original selenium bias rectifier
1:35:13 Skip’s record picks of the week
1:38:22 Best position for the three-way ground switch on a Fender
1:40:00 Skip has to return a Weed Eater

Episode 11

4:00 We talk about the dramatic results of the Skip-modified Fretboard Journal silverface Fender Champ
13:17 Skip’s unusual four amp switcher / mixer / pre-amp invention
19:48 Looking at the Fender 5F1 Champ schematic, part two (listen to episode 10 to get the first part)
31:37 This podcast now has an Instagram page (please follow us)
32:30 The problem with Skip’s Ep. 10 Baffler (on Fender tremolo circuits)
34:00 This week’s Baffler: A recently-serviced Fender Princeton Reverb with noisy pots
37:08 The smell of vintage tube amps
40:42 Gibson Falcon mods
45:00 Skip’s preferred NOS tubes
51:02 Loose tubes on a Gibson GA-6 Lancer
56:38 Thoughts on vintage Magnatones and the Magnatone pitch-shifting vibrato
1:02:36 A listener with a rare Hohner Contessa CA-300 amp asks for tips on keeping terminal strip/point-to-point wiring repair tidy
1:09:44 Why the 5E3 tweed Fender Deluxe is so loud, even with the volume turned down… plus the perils of replacing vintage pots
1:13:06 More Snufferstick talk and a Fender 6G15 reverb tank that hates high humidity
1:16:38 Tips on finding a good amp tech
1:26:45 A battery-powered(!) Gretsch Safari owned by a member of the Blue Man Group (see above photo, courtesy Jeff Mezzrow)
1:29:15 Finding tube amp treasures via Ham radio enthusiasts
1:33:54 Sleuthing on the origins of a Venice-branded amplifier
1:36:06 A repaired 1966 Ampeg Reverberocket 2 with some quirks
1:43:18 A hissing 1967 Fender Vibrolux Reverb and a great Danny Gatton tale

Bonus content: Travis Wammack’s “Scratchy;” a cardiologist chimes in; Skip’s beer of choice; why you should befriend your dentist; the novels of Patrick O’Brien and much more.

Episode 12 

2:05 Skip works on a barn-find 1960 Fender Tweed Bassman
6:10 Parenting tips
7:50 Jason confesses to Skip that he got a Stew-Mac Champ kit; DIY amp tips
12:33 Skip’s music picks of the week
16:05 Building a tube stereo amp (Dynaco Stereo 70, for music playback) versus a guitar amp
19:39 A synth repairman gets a contact high thanks to LSD residue
20:33 Disgusting things found in old amplifiers
21:16 Last week’s Baffler (a noisy Princeton Reverb, listen to episode 11) responses and answer
27:37 This week’s Baffler is the image above (and on our new Instagram page): What is the thing used for?
28:45 A listener in a hurry fixes his Les Paul thanks to Skip’s tube amp advice
30:34 Preserving (sloppy) originality on a CBS-era Fender or making it better than original
35:13 A non-reverb Silverface Fender Princeton with a weak vibrato
40:48 A reissue ‘63 Fender Vibroverb that needs more clean headroom
45:42 How do amp circuits get named?
47:40 Cleaning vintage pots
49:49: An ‘80s Tusc amp with EQ
51:06 What to do with a ‘70s Silverface Champ with no maintenance history
54:14 A ‘66 Ampeg Reverberocket with an unusual distortion sound
1:01:18 A ’69 Fender Bassman with both fixed and cathode bias
1:05:20 Rebuilding an amp found in a Hammond M-3 organ and melted wax on power transformers
1:07:52 A glimpse at the Fender Musicmaster Bass amps
1:11:40 Differences between an amp schematic and layout
1:13:24 A bargain Ampeg cabinet with four Altec 417 speakers
1:15:28 Sleeper pedal steel amp recommendations
1:17:00 An ‘80s Mesa Boogie SOB amp with a red-plating 6L6BC tube
1:20:01 Alternatives to the 6C10 tube on a ’82 Fender Super Champ
1:22:40 Negative feedback: What is it? Adjusting it…
1:29:21 A 1963 Gibson Discoverer Tremolo (GA-8T) amp with too much treble
1:32:01 Skip’s brief tutorial on speaker efficiency

Episode 13

3:27 Skip’s roll call of who is getting an A/B box
5:11 We discuss episode 12’s Baffler, the 3 Channel Psychedelic Control Center
9:10 A new Baffler!
11:44 An unlikely backup amp suggestion
14:30 This episode’s sponsors: Grez Guitars and Mono Cases (and TAVA t-shirts, coming soon)
17:00 Little Charlie’s Spanish rice (yes, our first recipe)
18:22 More parenting tips
19:11 A preview of our next amp schematic 101
22:34 More Champ mod talk: One difference between Blackface and Silverface Fender Champs, the Hammond 290AX transformer
27:38 Gain stage: What makes an amp distort
32:14 Bringing a Blackface Fender Tremolox with a solid state rectifier back to stock
37:21 A ’60s Kay 704 “Vanguard”
43:54 An amp motherlode in Lodi, California
45:35 A Princeton Reverb with a pilot light that is too bright
48:43 A Gibson GA-20 RVT found in a trash bin
54:28 Channel jumping and a vintage Airline Model 62-9013A
1:01:48 The pop you hear turning off your amp
1:07:03 A speaker dilemma on a 1962 Brownface Deluxe
1:09:28 Converting a PA head to a tube mic pre-amp
1:14:20 Turning an old tube radio into a guitar amp
1:18:18 Norwegian lues and Helge Tallqvist
1:19:11 This week’s recommended music
1:20:49 High-powered tube amps and the Hiwatt 400 bass amp
1:25:32 Using a light bulb limiter instead of a variac
1:27:34 Speaker replacement on a Gibson GA-40
1:31:50 A tribute guitar repairman Glen Quan, inventor of the Badass bridge

Episode 14

2:18 We have Truth About Vintage T-shirts (support the show!)
5:33 This week’s sponsors: Grez Guitars, Martin, Gibson and Carter Vintage
6:29 The Epiphone version of a Gibson Falcon
9:00 More cooking tips with Skip
12:12 Skip can’t find his schematic
12:30 Thrifty Leo [Fender]
14:12 More music tips: Bix Beiderbecke, Ned Boynton
18:00 Skip’s looking for someone to recone field coil speakers
19:35 Skip talks about his Champ mods, once more
24:45 The final Baffler
28:06 Correction re: Guitar Center’s return policy
29:28 A listener with an interesting way to use an electric amp with an acoustic guitar
33:27 The Grateful Dead’s Wall of Sound
37:12 Skip’s test guitar and cheap British amp recommendations
43:00 Skip’s test cabinet
45:15 A 1968 Fender Pro Reverb with a delayed vibrato
47:32 What’s a tone stack?
51:15 Pinpointing the buzz on a Silverface Fender Princeton
54:35 Class A, Class A/B and single-ended power tube arrangements
59:17 Tips on looking at vintage Gibson amps
1:02:48 A listener fixes his own Gibson Discoverer Tremolo
1:08:00 The triode mode used on high-powered amps
1:14:01 A brief chat about Dumble
1:18:44 A mid-60s Epiphone Galaxy that’s won’t turn off
1:20:23 Salvaging parts from a heavily modified Blackface Fender Bassman
1:24:30 Discussing changes on an early 1969 Fender Twin Reverb
1:29:50 Making homebrew amps sound less civil
1:33:11 Making a late ’50s Sylvania powered speaker amp work better as a guitar amp
1:42:12 Modding PA heads to work for guitars

Episode 15

2:40 New goats!
5:34 The search for good amp repair people (introduce yourself!)
8:10 Music pick of the week: Thee Lakesiders
9:00 New sponsor: the Roberto-Venn School of Luthiery
10:15 Cooking on amps: Hot dogs and the tale of Leslie West’s meatball sub (thanks, Greg!)
12:37 An answer to last week’s Baffler
13:44 Digging deeper into the Fender 5E1 Champ schematic
17:07 Skip’s stir fry recipe
23:27 A listener searches for a vintage tube amp book [Update: It can be found online here.]
28:03 New shirt ideas; working on tube AM radios
35:32 Quieting the ticking tremolo of a Silverface Fender Deluxe Reverb
44:20 Evaluating a 1966 Epiphone Pacemaker and a National Studio 10
50:13 The tonal and volume difference between 10 and 12-inch speakers
53:20 A 1965 Ampeg Reverberocket GS-12R transformed by a replacement vintage Alnico speaker
56:20 Low-watt alternatives for a Marshall lover
1:01:51 The “thing” that Fender Bandmasters do
1:08 Pros/cons of pulling the V1 tube on two-channel Blackface amps
1:12:08 A ’65 Pro Reverb with a splashing reverb noise
1:17:08 Joshua Yenne’s Falcon shootout: https://youtu.be/I16kPtGSAFw
1:17:46 A listener avoids a bad amp trade thanks to Skip
1:24:50 Skip’s take on a kit 5E3/5E5 Proluxe
1:28:35 A sag resistor to make a Fender Pro Jr. sound squishier
1:31:32 Another music pick: Van Morrison’s “Have I Told You Lately That I Love You”

Episode 16 

1:50 Jason starts his Stew-Mac Tweed Champ kit, Skip offers soldering tips
9:33 Skip offers some new surplus aluminum amp chassis
11:05 An A/B box update
13:50 Skip’s latest projects: A Blackface Fender Bassman and a Blackface Bandmaster
15:52 An eBay score: A bargain Park-branded Marshall JTM45
20:16 TAVA t-shirt updates
22:25 Sponsors: Roberto-Venn School of Luthiery & Grez Guitars
24:30 Any female amp techs out there? (Shoutout to @fazioelectric!)
31:20 Finding an amp’s EQ sweet spot via hearing the greatest amount of change on the knobs
41:30 Higher-wattage single-ended amps
48:30 A 1960 Epiphone Pacemaker that breaks up too soon
54:15 What type of wire(s) for a vintage-style Fender clone?
1:01:00 The next steps after building a Champ
1:10:05 The horrible distortion on an Ampeg V4
1:16:20 Damage from powering a tube amp without a speaker
1:21:28 Two amp reverb from vintage Gibson, Gretsch and Supro amps
1:28:24 Fender combo speaker output 101
1:35:47 Skip’s cheap speaker cabinet tips
1:42:24 Noisy filament wire in Filmosound conversions
1:47:48 Oldies.com
1:50:19 Digging deeper into the Champ schematic

Episode 17

1:57 Skip’s A/B box update
2:50 Skip’s music picks: Curtis Mayfield!, Larry Norman!, Stryper!
10:11 Skip’s video pick: Johnny Cash and Joe Strummer performing Bob Marley’s “Redemption Song”
12:00 TAVA shirt updates
12:22 Skip’s amp packing recommendations
14:05 Jason asks all the dumb Champ build questions you’re scared to ask
32:33 A higher-powered single-ended amp recommendation (a contemporary Supro Comet)
39:36 The 18-watt WEM Dominator V and a plug for David Minter’s Marshall and UK Made Pre Owned Amplifiers Facebook group
45:22 The amps built inside Fender Rhodes
48:12 “Blackfacing” a 1975 Fender Bassman
51:03 A unique 5F1 build and a question about speakers with whizzer cones
58:59 A Model 21 National-Dobro-made amp-in-case
1:02:54 Cloning the DeArmond R5 amp
1:08:52 Oddball European tube amps
1:11:34 The pros and cons of FX loops
1:17:38 The sonic differences between octal and 9-pin pre-amp tubes
1:25:03 Does a 2×12 speaker need a baffle
1:29:48 Uncle Doug videos
1:31:17 Harmonic tremolo
1:34:48 The rare Fender Vibroverb
1:46:20 A terminal board rattle

Episode 18

2:40 Jason brings home a Marshall Mercury
13:40 Mark Lindsay of Paul Revere & the Raiders
17:47 A request for a deeper dive into the Fender Champ schematic
24:34 Skip sells his Fender Tremolux head; an Ampex 960 reel-to-reel for free
27:45 Pat Boone’s recording console
30:45 Putting a VU meter in a Champ?
34:10 Truth About Vintage Amps shirts update: Shipped!
34:34 This week’s sponsor:Grez Guitars
37:20 More soldering advice
38:42 Scratchy pot tips (spoiler alert: WD-40)
41:43 An ’80s Fender Concert
47:08 A Vibroluxe Reverb versus Deluxe Reverb and the sonic difference between 10″ and 12″ speakers
57:25 Ray Massie’s The Vibe amp
59:30 18-watt Marshalls and a listener’s clone attempt using a Rauland PA amp platform
1:06:34 A 1955 Tweed Bassman with nearly all-new parts
1:10:32 When to replace drifted resistors
1:12:30 Converting a Fender PA-100 into a guitar amp
1:14:16 How many watts from a 6L6?
1:17:40 The Vingtor amp from Norway (and fixing a tremolo)
1:23:53 More Champ kit tips (wiring tube sockets)
1:25:22 A proposed Skip certification program
1:26:52 Coffee advice (Amazon link for the lazy)
1:29:40 Soap advice (Amazon link for the lazy)
1:31:50 Getting a 1965 Fender Princeton Reverb reissue rewired by Alessandro
1:37:45 Bad solder joints and troubleshooting a DIY 5F1 that stopped behaving

Episode 19

3:06 Soup hacks
4:01 An affordable, American-made boot
5:41 Frampton plays B.B. King
9:00 Site specific amp problems
12:37 Recommended Music: Joe Craven & the Sometimers’ ‘Garcia’s Songbook,’ Aretha Franklin’s ‘Aretha’s Gold’ and Charlie Musselwhite’s ‘Stand Back’
18:36 Skip goes to Harvard
20:04 Parenting tips
30:06 Today’s sponsor: Grez Guitars
32:15 More Larry Norman talk and props to Jon Linn
33:02 Solder or “sodder”
35:05 Skip’s recommended vintage tube supplier and advice on replacing tubes
40:22 Putting a solid state rectifier in a tweed-style amp
49:00 Fixing an output transformer in a 1961 Fender Brownface Pro
56:07 Hi-fi tube amps and phono pre-amp basics
1:04:06 A ’67 Fender Bassman that was plugged into a DI box
1:09:14 More output transformer talk: Ampeg Reverberocket
1:11:26 A vintage Niviko MA120X Japanese amp
1:19:06 A 1968 Fender Super Reverb with a rattle
1:25:34 The “trimmer” in a ’60s Silvertone 1431
1:28:40 Dirty power, an electric fence and an early ’60s Gibson Skylark
1:34:33 Changing the head gasket on a Subaru Forester
1:35:25 More on the trimmer on a Silverton 1431
1:38:28 Car talk
1:43:36 A Fender Hot Rod Deluxe with a busted volume pot
1:47:52 A clean, high-headroom, low volume steel amp
1:52:15 A Fender Silverface Champ vs Blackface Champ

Episode 20

1:50 John Lennon in Sacramento
3:17 A quick story about Earl Yarrow
12:20 Western Electric hi-fi collecting
14:40 Music recommendations: The Originals; Skip Mahoney & the Casuals; Julie London; “On the Alamo”
17:28: This week’s sponsors: Grez Guitars and Mono Cases
18:15 Skip addresses the critics (grounded cords, replaced caps)
30:02 “Solder,” revisited
31:39 Removing the ground hum from two amps running together
34:50 Making an amp out of a sushi platter; recommended needle nose pliers
38:27 6L6s in a Deluxe Reverb
42:41 Skip on your voicemail
45:20 President Skip?, practicalities of running an attenuator
50:33 Acoustic tube amps, revisited
54:45 A 1968 Princeton non-reverb lacking volume
57:47 Other vintage Gibson amps
1:03:00 The truth about unmodified Gibson Falcons and Silverface Champs
1:09:41 Vox Pacemakers overview
1:12:24 The unique properties of a Fender Bassman
1:15:38 Using pre-amp tubes as a power tube
1:19:40 Learning soldering and circuits from simple pedal kits and the Little Ruby
1:24:58 Running a Champ through a Variac versus a Hammond 290AX power transformer
1:27:44 A 1963 Fender Vibrolux with treble hiss
1:35:14 Speakers for a 1965 Ampeg Reverberocket 2 GS-12R
1:39:44 Non-lead solder
1:43:54 Biasing a cathode bias amp
1:49:49 Measuring plate current
1:54:57 The Baffler returns!

Episode 21

8:00 Cloning vintage knobs (video link, h/t John from Australia!)
9:34 This week’s sponsors: Grez Guitars, Roberto-Venn
11:01 An open call for our first live caller
13:39 Bartell guitar history (site link)
14:49 Skip’s schedule
16:49 More Solder-gate
17:15 Single-ended, parallel twin power tube amps
21:18 WD-40 to the rescue, again
23:28 Unwanted noise from an Echoplex
32:02 Lower B-plus voltage on a Blackface Fender
37:38 Tweed Princeton with a choke vs a resistor
44:18 Speaker cable vs guitar cable (and a sad bird tale)
53:46 Skip’s soup tips
56:43 The story behind the TAVA intro music
57:44 Sal Trentino and a Standel 80L15 schematic
1:05:22 Asking boutique makers for their schematics
1:10:37 Dr. Z’s new Jetta amp and the story behind the 7591 power tube
1:15:25 Figuring out what’s original in a 1953 Fender Tweed Deluxe (5B3)
1:18:14 How noticeable are bad caps?
1:26:06 A solid state Peavey Firebass 700 that won’t stop power cycling
1:29:00 An AmpRX BrownBox for a Brownface Deluxe
1:31:57 Skip’s picks: Treme; Aretha Franklin’s ‘Amazing Grace’; ‘Harlan County, USA; ‘The House That Trane Built’; the Recordium on YouTube; “Wherever You Go” by Skip Mahoney
1:37:00 Cheap Amazon variacs
1:39:41 Mystery tubes in a 1960 Lafayette tape deck
1:44:16 Putting the 5U4GB back into a 1969 Fender Princeton
1:51:29 Cooling off an amp that runs hot

Episode 22

1:37 Charles Baty (Little Charlie & The Nightcats! Little Charlie & Organ Grinder Swing!) joins us: Termite tales, Spanish rice hacks and amp tips from the road
43:09 Movie recommendations: ‘Wattstax’; ‘Theremin: An Electronic Odyssey’
44:16 Skip plays a gig
46:30 This week’s sponsor: Grez Guitars
46:55 Robert Keeley (!) calls in on Dean’s Echoplex woes (a follow-up fromTAVA #21)
50:24 A ’68 Fender Vibrolux reissue with a wonky footswitch
54:16 Replace a two-prong cord with a three-prong cord
57:29 “Getting to ‘no’ you;” “Suzie Q,” the Instant Pot, mashed potatoes and hot dogs
1:04:10 An amp with a noisy front plate
1:06:27 Instrumental music picks (Leo Kottke, Nels Cline), Skip’s early music influences
1:12:19 Future TAVA interviews plans
1:14:25 “Why we don’t replace all vintage electrolytic capacitors” video (YouTube link)
1:18:00 Robben Ford’s Dumble-modified Fender Super Reverbs
1:24:29 Why don’t amps have no-speaker protection?
1:31:53 AC568 Bassman amps, Fender grounding plates, sources of hiss, the 500 pF Baffler
1:37:55 Music picks: Erkin Koray’s ‘Elektronik Turkular’ and Bloodstone’s “Natural High”
1:39:07 Bogen PA heads and Harvey Mandel’s fuzz tone
1:43:43 Replacing drop capacitors in Victoria amps
1:49:47 Canada, part one: a Traynor YGL-3, Mark III with no input signal
1:53:14 Canada, part two: Sleeper Canadian amps (Garnet, Traynor, Johnson); check out the Corry Boys
1:57:00 An (almost) free vintage speaker (act fast)
1:58:15 Coffee in a can updates

Episode 23

1:05 “Naming calls” and PG&E
2:33 A/B box updates
3:00 The TAVA “book club” launches: Order the Angela Instruments’ tweed Princeton article and schematic (PDF, use at your own risk)
9:18 John Vanderslice (singer-songwriter, musician, Tiny Telephone Recording!) joins us: Living room shows, eating on the road, Gibson Falcons, mics for recording amps, Stromberg-Carlson pre-amps, surviving the music industry
1:01:40 Brian, the speaker re-coner at Weber Speakers: https://www.tedweber.com/recone-services/
1:03:03 Erick Coleman’s amp tech recommendation: Paul Schmittauer (email us)
1:04:08 Great Goo: Pepper Plant hot sauce (Amazon link: https://amzn.to/33orYLq)
1:05:40 Epiphone Pacemaker amps
1:07:23 Misspelled “Colombia” Fender amps
1:08:52 How multiple inputs work on amps
1:11:57 Using the second input on a Fender as a line-out
1:14:14 Amp builder Bob Gjika (Gjika Amplification), the mojo behind single-ended amps
1:20:09 A noisy Peavey Delta Blues 115
1:24:44 Solder in Italy (Soldergate revisited)
1:26:17 Breaking-in new tubes; upgrading parts in a Champ kit
1:32:00 What’s on Skip’s bench
1:33:01 Sano accordion tube and Audio Guild amps (see our Instagram for photos)
1:38:07 Skip on biasing
1:43:00 St. George amp heads, built by Ray Massie
1:46:50 The lifespan of tweed Fender caps
1:49:17 The “Fountain of Sound” Ampeg JS-35
1:53:02 Music recommendation: Pat Martino’s El Hombre; the Guild Double Twin combo guitar amp
1:55:43 Music recommendation, part two: The Nat Turner Rebellion’s cover of “Going in Circles”
1:56:43 Parenting tips: Classic Walt Disney movies
1:58:15 Slowing the tremolo rate in a blackface Fender
2:00:58 6973 power tubes in Supro amp
2:02:28 Replacements for a 6c10 tube found in an ’80s Fender Super Champ
2:06:38 Working on a Montgomery Ward 55 JDR 8436
2:10:49 Tube naming 101
2:13:16 Our forthcoming one year anniversary, a brief state of affairs

Episode 24

9:49: This week’s sponsor: Grez Guitars (link)
10:35 The Fretboard Journal’s Electric Guitar Annual, Vol. 2 (pre-order here)
>11:56 The TAVA First Year anniversary celebration: Win a Tweed Champ kit from Stew-Mac (Instagram link) !!!
15:26 Who wants to order a TAVA hat like this one? Email us…
18:36 Skip on our Angela Princeton reprint
24:36 Transformer 101
35:35 Amps for harp players
43:26 Building your first bass amp
51:54 Using an ART tube pre-amp in front of a guitar amp
55:18 A Traynor YBA-1 Bass-Master with a sensitive master volume
59:18 British vs. American amp tone
1:04:22 Another listener recommended amp tech: Tyler at Boss Organ in Somerville, Mass.
1:10:11 DeArmond amps
1:16:57 Bringing a Gibson EH-150 back to life
1:22:34 Kenny Burrell’s ‘Midnight Blue’
1:24:17 Craig Korth on the Fretboard Journal Podcast and the Ray Butts EchoSonic amp (link)
1:25:58 Salvaging stuff from a dead RCA film projector for a Princeton Reverb clone
1:34:32 A 1972 Fender Super Reverb with a weak tremolo; plus, what is an opto-coupler?
1:41:54 Trying different tubes on a Music Man Sixty-Five Reverb
1:48:35 KTNN: The Voice of the Navajo Nation

Episode 25

1:18 The TAVA Index (with a nod to Harper’s magazine)
6:55 What’s on Skip’s bench?
8:49 Speaker reconing: Scumback speakers
10:46 Skip’s Christmas wish list: A Subaru replacement, a break from phone calls
13:42 TAVA givewaway: A Stew-Mac Tweed Champ kit!
14:12 Our Angela Instruments amp project download
15:35 Manbroidery’s two-prong patch / a potential Ebbett’s Field Flannels hat
17:00 Yet another giveaway: An A/B box or $125 Skip labor credit
19:40 Skip gets a tractor
24:14 Dual rectifier tubes and Sag 101
28:40 Jason tries to get a special guest
31:29 Cabbage and mushrooms
35:00 Cabinet glue
40:49 Fender’s White amplifiers
44:09 Choosing a Fender for your band
48:12 How Skip drains filter caps
51:35 Lafayette amplifiers
54:28 A 1971 Fender Bassman (AA371) with stray voltages
59:23 Making an Ampex 602A work for guitar
1:11:32 Splitting a 2×12 speaker cab
1:15:19 Using a looper pedal to help with soundchecks (h/t Julian Lage)
1:16:50 Music recommendation: Red Norvo
1:18:12 Budweiser Copper Lager and cast iron pans
1:25:43 A Cornell Romany Pro that goes through power tubes
1:33:34 Book review: Maurice J. Summerfield’s The Jazz Guitar
1:34:32 Light bulb limiters
1:36:56 A Princeton Reverb-style amp with a pull-switch on the volume control
1:41:35 A Classic Tone 5E3 power transformer with one metal washer
1:43:35 A history of phase inverters
1:46:02 More new parallel, single-ended amps

Episode 26

1:46 An update on the Angela 5F2 Princeton schematic/article
4:23 TAVA Podcast Giveaways: A Stew-Mac Champ kit; an A/B box from Skip (winners to be announced during Ep. 27)
12:43 Reserve one of Manbroidery’s two-prong TAVA hats (Instagram link)
14:33 More cast iron
17:26 Triad Electronics’ return to guitar amp transformers, via Benson Amps
25:02 Charles Baty returns: Red Norvo, Tal Farlow, Chico Hamilton, Red Garland & Chile Colorado!
48:21 Gibson GA8T (Discoverer) amps
51:14 A 1966 Fender Vibro Champ with a mystery hum
57:02 Silverface Fender Champs versus 1960s Gibson Skylark / Atlas / etc.
59:11 Sonic variations between matching and serviced vintage Fender amplifiers
1:03:59 Using a Variac and a power strip to power up multiple amps simultaneously
1:07:53 Vintage guitar amps with built-in legs
1:12:25 A request for a single-episode Champ schematic walk-through
1:12:46 25uf cathode bias 12ax7 cathode-bypass caps on Champs
1:17:19 Getting up to speed on electronics basics
1:20:08 Amp class
1:23:14 Buck Nickels and Loose Change – “Makin’ Wine” (Larry Cragg in action! YouTube link.)
1:23:39 A new speaker configuration for a Danelectro DS100 cab
1:28:08 Gibson Invader amps
1:31:11 Grid leak biasing vs. cathode biasing
1:34:56 Modifying the Angela dual-singled amp with Russian 6P1P-EV tubes
1:36:35 Australia, Toyota Land Cruisers and fly fishing guides
1:38:43 Swollen caps in a 1979 Fender Deluxe Reverb; tips on drilling holes in a chassis

Episode 27

1:20 Skip’s A/B box setback
3:00 A winner for our Stew-Mac Champ kit
4:40 A question for our Australian listeners
6:07 A glitchy Ampeg Reverberocket
7:09 Skip heads to a vintage guitar show
12:00 @manbroidery two-prong hat update, let us know if you want one (Instagram link)
15:22 Old carbon comp resistors and Domino caps in an amp kit build
20:23 Testing caps for leakage
24:58 Running a synth through a tube amp
28:33 The timing on Kenny Burrell’s “Chitlins con Carne”
30:07 Music recommendation: The Joe Mooney Quartet (YouTube link)
31:17 The rationale for crazy amps like the Baldwin Exterminator
35:53 The sushi boat amp update; Rob Robinette’s tube amp page; micro amps
40:40 1960s Guild Thunder series amps
43:52 New cast iron (link, link, link); rum & tonic
46:24 The Big Index page: fretboardjournal.com/tavaindex
46:58 Wear and tear from maxed out amp settings
48:25 Restoring (and storing) a blown Oxford speaker
50:52  Where the magic happens in a non-master volume tube amp
59:00 Tips re: Little Charlie’s Chile Colorado
1:04:43 The speaker driven out / monitor jack on a Gibson Falcon
1:09:34 Tinkering with a one-tube reverb circuit
1:12:11 Modding a Gibson GA-5 Les Paul Jr. reissue amp
1:18:01 Thoughts on the Fender Musicmaster Bass amps
1:23:10 A cheap Variac hack with a current meter (eBay link; eBay link)
1:29:00 Safely using a ‘60s Supro Bantam “widowmaker” amp
1:33:08 Adding a polarity switch to an amp without one
1:35:36 Effects pedals between an amp and its speaker?
1:37:50 ART tube pre-amps (revisited) and Skip’s preferred tube preamps
1:42:00 Output transformer spec basics

Bonus episodes: Larry Cragg (12/10/19).