[QuadList] Transistors for Ampex AVR-2?

[C. Park Seward]

Exactly, Steve. I have a 1200 and have found it easy to work on. I do  
have some Ampex ICs and others do have some limited spare parts.

I haven't found any problem yet in finding transistors for the 1200,  
usually NTE replacements. I haven't had to replace any yet but did buy  
a few as backup.

The AVR-2 should reproduce a better picture. One of my 1200 have the  
NEC TBC so I would put that up against the 2. Replacing most of the  
electrolytics has also helped in the servo stability and video & audio  
noise.

I guess it also depends on the application. Is it for the rare dub or  
will it be used for exacting reproduction of high-end programs?

Personally, I would take an AVR 1 or 3 over the 2.

Best,
Park

C. Park Seward
Technical Manager
KABC-TV
"An Evening at the Academy Awards"
Cell: 818-535-2747
Home: 949-679-1870
KABC office 818-863-7331
Visit us: http://www.videopark.com

On Feb 10, 2009, at 4:01 PM, Steve Davis wrote:

> We are weighing the purchase of an Ampex AVR-2 vs. an Ampex  
> VR-1200.  The AVR-2 is loaded with proprietary IC chips which are an  
> obvious concern for replacement if (when) they fail.  The AVR-2 is  
> more versatile and uses discrete components on the boards so it is  
> ostensibly more straightforward to repair.  However, the transistors  
> are germanium, which are hard to come by in 2009.  Does anyone have  
> an opinion on this and, better yet, does anyone have a good source  
> for replacement components for the AVR-2?
>
> Many thanks,
> Steve Davis
>
>
>
>
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