View Single Post
  #6   Report Post  
Posted to rec.audio.pro
Scott Dorsey Scott Dorsey is offline
external usenet poster
 
Posts: 16,853
Default Ampex ATR100 repair

Gareth Magennis wrote:

This is a 2 track machine, but it doesn't output the Sync signal on either
side, though the logic/leds work as expected.
I realise if you are using this as a stereo recorder you would not need to
use the sync facility, but is there a sync able/disable function built in?
Or are there stereo versions and 2 track versions?


The reason why the sel-synch on the ATR-100 just sounds so much better than
any machine ever made before it is that it has a completely different signal
path for sel-sync.

The record head has a second set of windings for synch and there is a
second playback amplifier with different setup than the normal playback
head amp.

Anything anywhere in that path could be wrong, but if it is a machine of
unknown provenance and you don't have the log book for it, I'd first check
to see how many wires are coming out of the record head. Someone may have
replaced the record head with a less expensive third-party version that did
not have a synch winding, expecting they would never need to use sel-synch.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."