Re: [ARSCLIST] Ampex 456 - tip of the iceberg...chemistry

["Richard L. Hess" <arclists@xxxxxxxxxxxxxxx>]

Hi, Lou,

Keep wondering!

I'm not sure the Shamrock/Melody/White Box/etc 
helps much as it is so variable -- it could be 
anything. I think we'll learn more sticking with 
"name brand" tapes - they present enough of a challenge as it is.

I'm not saying nothing can be learned from 
seconds, but I can think of all the variables. I 
was talking with someone today in the early 
stages of the freezing experiment and the variables just keep piling up.

I gave away my Gilbert Chemistry Set many years 
ago, but I'd love to have an FT-IR machine and a 
gas chromatagraph. ... and the skill to drive them.

Cheers,

Richard

At 08:38 PM 6/16/2006, you wrote:
> Thanks very much for this considered postin, 
> Richard. In the late 70s we were using Shamrock 
> 7" castoffs, and it seemed that some of it was 
> backcoated and some was not, as a manufacturing 
> defect as the oxide looked ad performed the same 
> to our untrained ears. Would it be helpful if I 
> could ghet some samples like this? I'm not sure 
> I can, and not assurance that it was a similar 
> batch if so, but it has me wondering...
>
> Lou Judson ? Intuitive Audio
> 415-883-2689
>
> On Jun 16, 2006, at 5:05 PM, Richard L. Hess wrote:
>
> > We can create a hypothesis that back-coating in 
> > contact with binder has a catalytic effect on the degradation of the binder.

Richard L. Hess                   email: richard@xxxxxxxxxxxxxxx
Aurora, Ontario, Canada       (905) 713 6733     1-877-TAPE-FIX
Detailed contact information: http://www.richardhess.com/tape/contact.htm
Quality tape transfers -- even from hard-to-play tapes.