[BC] Ampex 350

[PeterH]

On Apr 10, 2010, at 2:46 PM, wcj9996 wrote:

> The machines That I had
> were 1954 - 55 models.  They all had 3 spring steel pins in the  
> hub, about the
> size of #20 solid wire.  They were probably replaced in later  
> production with
> the Zamac splines.

The Zamac-splined turntables came first.

The #20 wire pins came second, and were held over into the 351, and  
remained into the AG-350 production.

I have a 350 which was made in the first month of production of that  
model, and it has the Zamac splines, as do my three 400s (one 400A,  
two 401As).

I worked at a broadcast site which had literally dozens of 351s, all  
of which had wire pins.

The 351 dates from about 1957 to about 1967.