Videokarma.org

Go Back   Videokarma.org TV - Video - Vintage Television & Radio Forums > Antique phonographs

We appreciate your help

in keeping this site going.
Reply
 
Thread Tools Display Modes
  #1  
Old 08-06-2016, 11:53 PM
radiotvnut's Avatar
radiotvnut radiotvnut is offline
VideoKarma Member
 
Join Date: Jul 2007
Location: Meridian, MS
Posts: 5,887
Audiotronics model 400 transcription record player

Here's an Audiotronics model 400 4-speed transcription record player/PA system from '64 and it will play records up to 16" in diameter. It needed the usual mechanical clean-up and re-lubrication; but, the amp was fine and it now works well. The only issue is that the 78 tip on the 89T cartridge is shot and I need to get another one; but, the old style LP/78 Astatic 89T cartridges are getting scarce (and costly). The tube line-up is 6CA4, 12AX7, and 6BQ5. For a little single-ended amp that's good for about 5-6 watts, it has plenty of volume (it will really be interesting when I finally get around to restoring my Newcomb transcription player with four 6V6's in it).





Reply With Quote
  #2  
Old 08-07-2016, 12:31 AM
maxhifi's Avatar
maxhifi maxhifi is offline
VideoKarma Member
 
Join Date: Dec 2010
Posts: 1,266
How does that continuously variable speed work mechanically? It looks like it has a neon bulb with a mirror to show a strobe pattern printed under the turntable? Never seen anything like it, is it
Visible with larger records? Very cool unit, I like the sound a single 12" speaker makes, and looks quality inside and out.
Reply With Quote
  #3  
Old 08-07-2016, 12:56 AM
radiotvnut's Avatar
radiotvnut radiotvnut is offline
VideoKarma Member
 
Join Date: Jul 2007
Location: Meridian, MS
Posts: 5,887
There is a round metal disc that is attached to shaft of the motor (coming out of the bottom of the motor). When the lever is moved, it moves a magnet close to the disc and the magnetic field alters the motor speed.
Reply With Quote
  #4  
Old 08-07-2016, 09:06 AM
maxhifi's Avatar
maxhifi maxhifi is offline
VideoKarma Member
 
Join Date: Dec 2010
Posts: 1,266
Oh, that's an eddy current brake , there must be a 33/45/78 selector somewhere I can't see. I thought it was a continuously variable speed control.
Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 03:29 AM.



Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
ęCopyright 2012 VideoKarma.org, All rights reserved.