Welcome To the Hoffman Amplifiers Forum

September 07, 2025, 03:41:20 pm
guest image
Welcome, Guest. Please login or register.
-User Name
-Password



Hoffman Amps Forum image Author Topic: Minor score- vintage stuff  (Read 2447 times)

0 Members and 1 Guest are viewing this topic.

Offline firemedic

  • Level 3
  • ***
  • Posts: 516
Hoffman Amps Forum image
Minor score- vintage stuff
« on: September 23, 2012, 10:04:13 pm »
For $40 today I got a GE radio repairman tube box, in good shape, full of tubes (half-wave rectifiers, vertical-deflection & other useless TV tubes), 2- tube testers that work (EMC & a Mercury 990), a thick Sylvania technical manual, and an RCA Receiving Tube Manual RC-24. It's all in good shape & cleans up nice.

There's maybe 20 or 30 tubes I can use in my stuff & since buddies occasionally bring me old brokedown radios to resurrect, some of the others may find a home.

You guys (& girls) are the only ones I can tell who would understand.

Offline DummyLoad

  • SMG
  • Level 5
  • *****
  • Posts: 5791
Hoffman Amps Forum image
Re: Minor score- vintage stuff
« Reply #1 on: September 23, 2012, 10:31:00 pm »
cool!

vertical-deflection

some make really nice AF amp power output tubes. 6V6 was also specified for use as vert. def. amp.  6CZ5? 6CM6? 6DB5? 6EM8? 6EZ5? 6GK6?

--DL

Offline PRR

  • Level 5
  • *******
  • Posts: 17082
  • Maine USA
Hoffman Amps Forum image
Re: Minor score- vintage stuff
« Reply #2 on: September 23, 2012, 10:51:26 pm »
> 6V6 was also specified for use as vert. def. amp

It was handy; but not that good.

In US TVs, custom was a half-12AT7 and a 2A3-like Power Triode in one jug. These make sweet several-Watt hi-fi amps. They may be too tame for guitar; also you will want another stage in front.

The vast majority will be tuned for 160V rail. So we are far off from guitar-world customs.

Most can be looked-up in RC-24. The Sylvania may be better.

Offline firemedic

  • Level 3
  • ***
  • Posts: 516
Hoffman Amps Forum image
Re: Minor score- vintage stuff
« Reply #3 on: September 23, 2012, 11:06:46 pm »
I've looked up a few so far and while a lot of them may be useful to me, they have 7- or 12-pins, or the large 9 pin config. So I'll either need to find a source for these kinds of sockets or just let it go. 

Offline DummyLoad

  • SMG
  • Level 5
  • *****
  • Posts: 5791
Hoffman Amps Forum image
Re: Minor score- vintage stuff
« Reply #4 on: September 23, 2012, 11:28:47 pm »
12-pins

compactrons? i've used them and sockets are still available - 6JB5/6HE5. probably better off with a TV restoration crowd though.
 
--DL  
« Last Edit: September 25, 2012, 02:29:52 am by DummyLoad »

Offline kagliostro

  • Level 5
  • *******
  • Posts: 7739
Hoffman Amps Forum image
Re: Minor score- vintage stuff
« Reply #5 on: September 24, 2012, 01:18:10 am »
Large 9 pin sockets, magnoval, do you get el500 - el504 - el509 - el519 ?

About 12 pin tubes, here you can find some documentation about use

http://www.junkbox.com/electronics/CompactronTubesIndex.shtml

K
The world is a nice place if there is health and there are friends

 


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