Ampex 960 restoration help, belts?

GroupDIY Audio Forum

Help Support GroupDIY Audio Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

AardvarkBry

Tinkerer who doesn’t know nearly enough to fiddle
Joined
Apr 30, 2020
Messages
83
Location
Ossining
I’ve been restoring an old Ampex 960, the old late 50s/early 60s tube model. I finally got it all up and running electronically, but there are some noticeable issues. When I record, there is a considerable amount of flutter and wow. There seems to be a little too much slack on the tape, and when I rewind and fast forward, it’s kind of sluggish to engage. It only works half way decent at 3 3/4 speed. The 7 1/2 speed is a disaster. Also, the stereo heads setting sounds pretty bad, but mono doesn’t sound half bad. I was thinking it probably needs new belts, a head alignment, and possibly heads demagnetized. One curious thing, when I play commercially produced tapes, they sound great. It’s only when I record something that I really notice all the flutter and wow, which makes me wonder if I just have a bunch of bad tapes? Any help is greatly appreciated.
 
Here’s the service manual
 

Attachments

  • hfe_ampex_952_954_960_service_info_en.pdf
    17.3 MB · Views: 3

Latest posts

Back
Top