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



For anyone trying to reach her, Mrs. Matarazzo's husband was the brother of Cookie French, John French's wife, cohort and great lady. Last I spoke with John, he was moving to Smyrna, Delaware. I assume JRF Magnetics continues and is web findable.

Steve Smolian
.
----- Original Message ----- From: "Peter@xxxxxxxxxxxxx" <lists@xxxxxxxxxxxxx>
To: <ARSCLIST@xxxxxxxxxxxx>
Sent: Monday, June 19, 2006 7:03 PM
Subject: Re: [ARSCLIST] Ampex 456 - tip of the iceberg...chemistry



The AGFA process was not openly published and, unlike the AMPEX process,
people have actually been paying royalties to use it.  Last I heard, from
someone who has used the process, the patent was owned by John Matarazzo
(spelling?) and is currently held by his wife.

Peter Brothers
President
SPECS BROS., LLC
(973)777-5055
www.specsbros.com

Restoration and Disaster Recovery Service Since 1983

-----Original Message-----
From: Association for Recorded Sound Discussion List
[mailto:ARSCLIST@xxxxxxx]On Behalf Of Goran Finnberg
Sent: Saturday, June 17, 2006 11:53 AM
To: ARSCLIST@xxxxxxxxxxxx
Subject: Re: [ARSCLIST] Ampex 456 - tip of the iceberg...chemistry


Steven C. Barr:


> One wonders...if there is moisture involved, and thus present in the
> "defective" tapes...would it be possible to use a microwave oven
> (which requires water molecules to create heat) to "bake" the tapes?

It is a fact that the recommended way to treat AGFA 468/469, from those
batches during a year around 1990, that were found to go sticky, and in
fact the only AGFA tape to go sticky and only from production during a
year as far as I know the story...

IS to bake it in a microwave oven according to the AGFA memo issued at
that time.

This was reported by Dave Collins Chief Mastering Engineer at A&M
records who reported that he was visited at A&M by a technical
representative of AGFA GEAVERT GmbH who set it all up and guided David
Collins through the procedure and left the Technical memo.

I would love to get my hand on a copy of that memo for sure.


-- Best,

Goran Finnberg
The Mastering Room AB
Goteborg
Sweden

E-mail: mastering@xxxxxxxxx

Learn from the mistakes of others, you can never live long enough to
make them all yourself.    -   John Luther




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