Welcome to Australia's only Vintage Radio and Television discussion forums. You are not logged in. Please log in below, apply for an account or retrieve your password.
Australian Vintage Radio Forums
  Home  ·  About Us  ·  Discussion Forums  ·  Glossary  ·  Outside Links  ·  Policies  ·  Services Directory  ·  Safety Warnings  ·  Tutorials

Tech Talk

Forum home - Go back to Tech talk

 Newcomb Amplifier / Ultra Tone 1C3
« Back · 1 · Next »
 Return to top of page · Post #: 1 · Written at 5:08:20 PM on 23 July 2018.
Aurther Dungar's Gravatar
 Location: Brisbane, QLD
 Member since 8 July 2018
 Member #: 2263
 Postcount: 11

I have recently acquired a film amplifier, name on it is Newcomb Amplifier / Ultra Tone.
It for sure needs tons of work, but it has a great patina.
Valve line up is on the left - 5y3 rectifier - Plug in module of 3 10μF caps, two 6L6 tubes ( outputs ) then 3 x 6J7 tubes ( pre amps ).
These numbers are printed on the valve bases.
It has a tone control (left), channel - 2 (mike 2), channel - 1 (phono/mike - 1).
This is an American origin amplifier I.E. -120V.
Still got many original components in it.
Does anybody have a circuit diagram
Or maybe something simuliar ?
Or do we have a link for a good American forum ?

thanks for your help .
dmxtothemax.live.com.au


 
 Return to top of page · Post #: 2 · Written at 5:38:23 PM on 23 July 2018.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 5239

You could try the American antique radio forum http://antiqueradios.com/forums/index.php


 
 Return to top of page · Post #: 3 · Written at 10:58:11 PM on 23 July 2018.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6678

The schematic for that amp ought to be pretty simple to draw from scratch just by following the wiring.


 
« Back · 1 · Next »
 You need to be a member to post comments on this forum.

Sign In

Username:
Password:
 Keep me logged in.
Do not tick box on a computer with public access.