If it's who I think it is, was his first name Werner? I don't recall his
last name. In my active AES days, we discussed many aspects of tape though
not this one.
----- Original Message -----
From: "Goran Finnberg" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, January 14, 2011 3:36 PM
Subject: [ARSCLIST] Self erasing of magnetic tape?
> reported to me that no one could explain
> why, but some cassettes that were recorded
> would lose high frequencies if stored for
> about a year. The loss was substantial.
> His recollection is that the 15 kHz loss was
> in the neighbourhood of 10 dB in the worst
What tape was that?
But still no indication what is the cause IF this truly happens nor is there
any technical reason to be found in the litterature and Bertram/ Mcknight
who should be considered as world authorities in magnetic material science
have no explanation why this should happen.
In fact there is no known mechanism that would make these subjective reports
come true at all.
I have talked an evening with one of the magnetic tape experts at BASF while
visiting an AES meeting in Germany in the 80īs.
This person, I donīt recall his name have his card someplace, was very
He claimed that certain types of cassette tape using cobalt doping, was it
from 3M Scotch?, was unstable in time.
He claimed a loss in level at both long and short wavelength within just a
The Mastering Room AB
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Learn from the mistakes of others, you can never live long enough to
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