Welcome To the Hoffman Amplifiers Forum

September 08, 2025, 05:26:40 pm
guest image
Welcome, Guest. Please login or register.
-User Name
-Password



Hoffman Amps Forum image Author Topic: Do not use lamp limiter with 100w bulb when setting bias!  (Read 1987 times)

0 Members and 1 Guest are viewing this topic.

Offline Searing

  • Level 2
  • **
  • Posts: 285
  • All's well that sounds well
Hoffman Amps Forum image
Do not use lamp limiter with 100w bulb when setting bias!
« on: July 30, 2019, 11:35:29 pm »
 :BangHead:


I just wasted hours of my life trying to bias a Super Reverb because I had it plugged into a current limiter I recently built.  Couldn’t figure out why my plate voltages were low.  I was so frustrated!  Now I know.  I really need to get a voltage read out on my bench. 

Offline jjasilli

  • Level 5
  • *******
  • Posts: 6731
  • Took the power supply test. . . got a B+
Hoffman Amps Forum image
Re: Do not use lamp limiter with 100w bulb when setting bias!
« Reply #1 on: July 31, 2019, 06:09:43 pm »
These things happen.

Offline Fiat_cc

  • Level 2
  • **
  • Posts: 174
  • I love Tube amps
Hoffman Amps Forum image
Re: Do not use lamp limiter with 100w bulb when setting bias!
« Reply #2 on: August 05, 2019, 02:47:53 am »
Been there. I figured it out after a little while, and haven’t made the same mistake again.

Offline 2ndserve

  • Level 1
  • *
  • Posts: 14
  • I love Tube amps
Hoffman Amps Forum image
Re: Do not use lamp limiter with 100w bulb when setting bias!
« Reply #3 on: August 05, 2019, 11:16:01 am »
This things are why my son cusses

 


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