Welcome To the Hoffman Amplifiers Forum

September 06, 2025, 02:35:22 pm
guest image
Welcome, Guest. Please login or register.
-User Name
-Password



Hoffman Amps Forum image Author Topic: Kay 703-C  (Read 3605 times)

0 Members and 1 Guest are viewing this topic.

Offline Stankfut

  • Level 2
  • **
  • Posts: 116
Hoffman Amps Forum image
Kay 703-C
« on: February 08, 2011, 03:19:42 pm »
Okay...here we go! 

What I know:  I plugged it in, it has a loud buzz, about 60hz and no guitar volume.  I expected as much.  It needs an iso tranny, three prong cord and caps.  I have read the other posts on the forum about 703's, but I have a few questions.....

My questions:  For the tranny, I'm thinking a Triad N-51X, my math says it will work, but I stink at math, so could someone double check me?  Second, are there any suggestions as far as filter caps?  I have a JJ 40-20-20-20 lying around, I know it will work, but is there something better?  Also, I have read there are grounding considerations to address when switching to a three prong cord, is that true?

Sorry for all the questions!

Thanks,
Steve

Offline Stankfut

  • Level 2
  • **
  • Posts: 116
Hoffman Amps Forum image
Re: Kay 703-C
« Reply #1 on: February 08, 2011, 03:20:30 pm »
By the way, does anyone have any sound clips of these things?  I have no idea what it will sound like!

Offline Tiny_Daddy

  • Level 4
  • *****
  • Posts: 2690
  • Get your Amp N Gear!
Hoffman Amps Forum image
Re: Kay 703-C
« Reply #2 on: February 08, 2011, 07:08:55 pm »
I have been using the N68X, slightly cheaper from Mouser.

Offline Geezer

  • Level 4
  • *****
  • Posts: 3680
  • Groov'n Tube'n KOOK (Keeper Of Odd Knowledge)
Hoffman Amps Forum image
Re: Kay 703-C
« Reply #3 on: February 08, 2011, 08:13:41 pm »
I have been using the N68X, slightly cheaper from Mouser.

Wow! Cheaper and BEEFIER (50VA vs 35VA).....you don't see that very often.
   Cunfuze-us say: "He who say "It can't be done" should stay out of way of him who doing it!"

Offline DummyLoad

  • SMG
  • Level 5
  • *****
  • Posts: 5791
Hoffman Amps Forum image
Re: Kay 703-C
« Reply #4 on: February 08, 2011, 09:49:41 pm »
By the way, does anyone have any sound clips of these things?  I have no idea what it will sound like!

&feature=related

&feature=related

Offline bluestone

  • SMG
  • Level 2
  • *****
  • Posts: 134
  • Boogiechillin!
Hoffman Amps Forum image
Re: Kay 703-C
« Reply #5 on: February 09, 2011, 09:30:15 am »
This was the very first amp that I ever owned back in '63 0r 64....Cool all the way when cranked.....

 


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