Re: [ARSCLIST] Risk assessment tool

[Lou Judson <loujudson@xxxxxxx>]

In the late 70s to mid 80s, a radio nonprofit I worked for bought boxes 
and boxes of Shamrock black 7" reels of castoff Ampex 457 - some of it 
not slit properly, some of it with gooey backcoating or falling off 
even when new. We'd splice together two 7" reels for an hourlong 
program, and sometimes they would actually sound different... we made 
masters on this S**T too. Imagine the baking when some of that is 
acccessed now! Fortunately most of the 20 years they did analog, it was 
on Scotch 176 - cheap and ordinary but still plays fine today (I know, 
I transfer tapes for them even now sometimes!)...

My point is Shamrock is all discraded tape as far as I am concerned. 
Careful!

Lou Judson • Intuitive Audio
415-883-2689

On Jan 4, 2006, at 9:36 AM, Mwcpc6@xxxxxxx wrote:

> In a message dated 1/4/2006 11:33:25 AM Eastern Standard Time,
> micasey@xxxxxxxxxxx writes:
> Bob,
>
> I'm curious about the two sss tapes that baking did not restore--any
> thoughts on what might have been different with those two tapes 
> compared
> to the countless others that were succesfully baked?
>
> Mike
> ***************
>
> Not that it relates to Bob's case, but similar tapes that I've found 
> were
> green-box "Shamrock" reels in which the oxide did not seem sticky, but 
> partly
> smoothly transferred to the backing of the previous layer, leaving 
> effectively
> double coated tape.
>
> Considering the source, this may have represented a catastrophic
> manufacturing defect that was passed on to the "white box" market.
>
> Mike Csontos