Welcome To the Hoffman Amplifiers Forum

September 07, 2025, 03:43:58 pm
guest image
Welcome, Guest. Please login or register.
-User Name
-Password



Hoffman Amps Forum image Author Topic: modified hammond pee wee AO-44 with 6G2 preamp + tremor-lator  (Read 4940 times)

0 Members and 1 Guest are viewing this topic.

Offline khansen810

  • Level 1
  • *
  • Posts: 13
  • I love Tube amps
I built this amplifier according to the attached schematic that I put together. The tremolo circuit is new which I added to the schematic. (connected to pin 1 of V1-A).The amplifier works fine with a guitar plugged in except the tremolo has no affect on the guitar. You can hear the tremolo circuit working. (pulsating)I have a feeling that I didn't connect the tremolo circuit to the correct part of the schematic. Would appreciate help as to where the tremolo should be connected to. Thank you.

Offline sluckey

  • Level 5
  • *******
  • Posts: 5075
    • Sluckey Amps
Hoffman Amps Forum image
Re: modified hammond pee wee AO-44 with 6G2 preamp + tremor-lator
« Reply #1 on: July 14, 2019, 08:47:58 pm »
Short out that 500K resistor on top of the intensity pot. Any better?
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

Offline khansen810

  • Level 1
  • *
  • Posts: 13
  • I love Tube amps
Hoffman Amps Forum image
Re: modified hammond pee wee AO-44 with 6G2 preamp + tremor-lator
« Reply #2 on: July 15, 2019, 07:38:12 pm »
Thanks for getting back to me. Shorting out the 500K worked. The tremolo works properly now. Thank you.

Offline sluckey

  • Level 5
  • *******
  • Posts: 5075
    • Sluckey Amps
Hoffman Amps Forum image
Re: modified hammond pee wee AO-44 with 6G2 preamp + tremor-lator
« Reply #3 on: July 15, 2019, 08:25:55 pm »
There is a simple mod to that tremolo circuit that allows the oscillator to run continuously. This means instant On when you step on the footswitch. I highly recommend it. Take a look at it in my '67 Bandmaster...

https://el34world.com/Forum/index.php?action=dlattach;topic=24334.0;attach=76204
 
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO 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