The Truth About Vintage Amps, Ep. 69

The 69th installment of the Truth About Vintage Amps! Once again, amp tech Skip Simmons is fielding your questions on all-things-tube-amp.

Use the discount code TRUTHV150FF to save $15 off Caddis readers.

As always, we’re also sponsored by Amplified Parts and Grez Guitars.

Some of the topics discussed this week:

3:09 Skip gets his Caddis readers

5:52 Skip’s $260 Ampeg Reverberocket 2; vintage mono hi-fi speakers

11:53 Skip’s Champ mod, redux; radial caps instead of axial caps

16:37 A Gibson GA-5 reissue with extra stuff between the coupling capacitor and the second stage of the 12AX7

22:32 Wandering Boy Guitars (link)

29:00 Why velcro on the speaker grill cloth? John D. MacDonald’s Travis McGee series

35:07 Jason’s new podcast: Sweep the Floor (link)

35:42 Presence control versus top cut control

42:10 The Gibson Hawk’s one-tube reverb circuit

46:29 Mismatching speaker impedance on a 1959 Gibsonette GA-8; Roald Dahl’s ‘Kiss Kiss’

51:37 Maximum efficiency speaker mismatching with a Supro 1610RT and a Dr. Z Maz 38 S; washing white rice

55:58 Music recommendations: Blackalicious’ “Feel That Way;” Steve Wonder’s Talking Book, Sam Plecker’s “Mr. Gray Cloud”

1:00:50 Using keyboards and synths with vintage tube amps

1:05:00 All-Clad’s factory second website (homeandcooksales.com)

1:05:42 What to do with 100v line output transformers in old PA amps

1:09:49 Filter cap values in relation to power transformers; Arnica gel

1:15:44 The three pillars of BBQ sauce; basquecompany.com

1:19:25 Bulging caps in a Bogen DB-130 amplifier; La Costena Salsa Taquera

Support the show as a TAVA Patreon patron and get bonus episodes, in-depth articles on amp circuitry and other surprises.

Have an amp, life or kitchen question for Skip? Email or send a voice memo to: podcast@fretboardjournal.com or leave us a voicemail or text at 509-557-0848.

Above: Listener Benoit’s Bogen DB-130 hi-fi amp. 

Want to see all the former topics discussed on the TAVA Podcast? Click here for all the show notes on one page.