Welcome To the Hoffman Amplifiers Forum

September 07, 2025, 03:43:41 pm
guest image
Welcome, Guest. Please login or register.
-User Name
-Password



Hoffman Amps Forum image Author Topic: Doug's Marshall Replacement tf's      (Read 25382 times)

0 Members and 1 Guest are viewing this topic.

Offline Geezer

  • Level 4
  • *****
  • Posts: 3680
  • Groov'n Tube'n KOOK (Keeper Of Odd Knowledge)
Hoffman Amps Forum image
Doug's Marshall Replacement tf's    
« on: June 18, 2005, 06:42:35 am »

  Hoffman Amplifiers
    > Tube Amp Building - Tweaks - Repairs
        > Doug's Marshall Replacement tf's      
 
<< Prev Topic | Next Topic >>  
Author  Comment  
Funkalicousgroove
Junior tube assistant
Posts: 80
(4/23/04 4:16 pm)
 Doug's Marshall Replacement tf's
--------------------------------------------------------------------------------
 Has anyone used the Marshall replacement tf's that doug sells? I'm building an amp for a friend that will basically be a plexi with 2 extra gain stages that can be footswitched in and out, kind of along the lines of a Bogner extasy or soldano SLO. This will be my first EL34 Amp, I'm VERY excited!
 
bnwitt
Senior tube assistant
Posts: 341
(4/23/04 4:22 pm)
 Re: Doug's Marshall Replacement tf's
--------------------------------------------------------------------------------
 I've used them and they work fine.
Barry

Edited by: bnwitt at: 4/23/04 5:18 pm
 
Funkalicousgroove
Junior tube assistant
Posts: 82
(4/23/04 4:40 pm)
 Re: Doug's Marshall Replacement tf's
--------------------------------------------------------------------------------
 I'm sure they do, Doug wouldn't sell any junk-What did you build? How does it sound? I guess my main concern is the filament current rating because I'm going to be running 5 preamp tubes instead of 3. Doug offers no current/primary impedance ratings in the description of these.
 
JTM
Junior tube assistant
Posts: 96
(4/23/04 4:47 pm)
 Re: Doug's Marshall Replacement tf's
--------------------------------------------------------------------------------
 I built a Plexi 50 with Doug's Marshall parts.
It's the vintage amp I could never afford.

Amazing sound but loud,very loud. I love it!

Tim
 
bnwitt
Senior tube assistant
Posts: 342
(4/23/04 5:13 pm)
 Re: Doug's Marshall Replacement tf's
--------------------------------------------------------------------------------
 I have built several hoffman Plexi 50 heads with Doug's PT's and OT's. And they sound great as mentioned by previous post. Here is the page with the trannie ratings. Towards the bottom of the page it says 5 amps on the mpt50 and 7 amps on the mpt100 for the heater winding. The impedance for the OT's is towards the upper part of the page.

www.hoffmanamps.com/marshall.htm

Edited by: bnwitt at: 4/23/04 5:19 pm
 
Funkalicousgroove
Junior tube assistant
Posts: 84
(4/23/04 6:28 pm)
 Re: Doug's Marshall Replacement tf's
--------------------------------------------------------------------------------
 Thanks, I'm sold. I hate to spend huge money on tf's so Doug's really fit the bill! THANKS EVERYBODY!!
 
EL34  
I got your parts right here.
Posts: 2279
(4/26/04 10:30 am)

  Re: Doug's Marshall Replacement tf's
--------------------------------------------------------------------------------
 You didn't look at the transformer spec's page?

All the current ratings are listed.





 
 
Funkalicousgroove
Junior tube assistant
Posts: 88
(4/26/04 1:26 pm)
 Re: Doug's Marshall Replacement tf's
--------------------------------------------------------------------------------
 Found it after someone pointed me at it, I only cifer to tha third grade, you good folks will just have to bear with me!
 
 
 << Prev Topic | Next Topic >>

 

 Topic Commands
 Click to receive email notification of replies
  
jump to:  Tube Amp Building - Tweaks - Repairs (New)New Product Suggestions (New)Praises - Complaints - Suggestions (New)Buy - Sell- Trade (New)Archives (New)    
 

- Hoffman Amplifiers - Tube Amp Building - Tweaks - Repairs - Hoffman Amplifiers -



Powered By ezboard® Ver. 7.32
Copyright ©1999-2005 ezboard, Inc.
   Cunfuze-us say: "He who say "It can't be done" should stay out of way of him who doing it!"

 


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


password