Welcome To the Hoffman Amplifiers Forum

September 06, 2025, 12:37:07 pm
guest image
Welcome, Guest. Please login or register.
-User Name
-Password



Hoffman Amps Forum image Author Topic: Seeking reactions to Deluxe Reverb with Tweed Norml Channel and Chanel Switching  (Read 2152 times)

0 Members and 1 Guest are viewing this topic.

Offline ac427v

  • Level 2
  • **
  • Posts: 347
  • I love tube amps
I never seem to play my 22 watt Plexi Vibroverb. Played a very nice Silverface DR and I'm smitten. So it is rebuilding time.
My new plan will fit a modded Deluxe Reverb into a Princeton Reverb chassis using only 5 preamp tubes. Sluckey's Trem-o-nator saves 1/2 tube and a Tweed Normal Channel save the other half. Other tweaks include a negative feedback switch and a Tone control on the Reverb. The biggest question I have is about my plan to allow switching the Reverb and Tremolo effects from the the typical Fender Black Panel Channel to the Tweed Normal Channel. Will this work?Any other reactions based on real or theoretical experience are also appreciated!
« Last Edit: October 05, 2023, 03:12:25 pm by ac427v »

Offline tdvt

  • Level 3
  • ***
  • Posts: 542
I think the amp is a cool idea & something that makes sense to me in a practical sense.

But after checking out the switching & the complexity that will add as far as noise potential, wiring, etc. I am not seeing the added value to make it worth the trouble, compared to just having both channels hard-wired & balanced to each other before they head to the power amp.

I see you would have a "pure" tweed signal path by switching out the effects, but that is all I am coming up with, though it is likely I am missing something...?

I am offering that up with the best of intentions.
 

Offline ac427v

  • Level 2
  • **
  • Posts: 347
  • I love tube amps
Much thanks for your thoughts. I appreciate your perspective and experienced opinion!
I like the concept of being able to get trem and reverb on the tweed channel when desired, Started working on the layout layout design last night and found that the 12AT7 reverb driver needs to move to V2 position to shorten wire runs. My first priority is an amp that has pure Deluxe Reverb tones when desired. I don't want to lose that in my efforts to have additional non-traditional tonal combinations available. So if I build with an "effects channel assignment switch", I will make it fairly easy to completely remove it if it adds noise. I won't be getting a faceplate made until all the bugs are worked out!

Offline Platefire

  • SMG
  • Level 5
  • *****
  • Posts: 5444
  • How many tube amps do you need? One more!
The simple way to get channel switching is with a good A/B/Y box. I can testify that the Whirlwiind A/B/Y has a built in active circuit that allows silentswitching, no coloration or degrading of signal because I've had one for years and works great.
 https://www.whirlwindusa.com/products/black-boxes-effects-and-dis-miclineinst-switchers-selector-multiselector-instrument-switch
On the right track now<><

 


Choose a link from the
Hoffman Amplifiers parts catalog
Mobile Device
Catalog Link
Yard Sale
Discontinued
Misc. Hardware
What's New Board Building
 Parts
Amp trim
Handles
Lamps
Diodes
Hoffman Turret
 Boards
Channel
Switching
Resistors Fender Eyelet
 Boards
Screws/Nuts
Washers
Jacks/Plugs
Connectors
Misc Eyelet
Boards
Tools
Capacitors Custom Boards
Tubes
Valves
Pots
Knobs
Fuses/Cords Chassis
Tube
Sockets
Switches Wire
Cable


Handy Links
Tube Amp Library
Tube Amp
Schematics library
Design a custom Eyelet or
Turret Board
DIY Layout Creator
File analyzer program
DIY Layout Creator
File library
Transformer Wiring
Diagrams
Hoffmanamps
Facebook page
Hoffman Amplifiers
Discount Program