AES7 test materials

[Last updated 2009-05-27]

The following are suppliers of test materials according to annex 7 of AES7, Methods of Measurement of Recorded Flux of Magnetic Sound Records at Medium Wavelengths.

IMPORTANT NOTE: AES does not endorse any supplier
or guarantee performance of its products.

The calibrated high-efficiency head described in 5.2 and 5.3 is available from:

Magnetic Reference Laboratories
229 Polaris Ave Ste 4
Mountain View CA 94043


The carbonyl iron suspensions cited in 4.2 are available as "magview developer" from:

Sprague Magnetics, Inc.
12806 Bradley Ave.
Sylmar, CA 91342 USA


The ferrofluids for magnetic pattern recognition cited in 4.2 are available from:

Ferrofluidics Corp.
Fluid Products Group
40 Simon St
Nashua, NH 030061-2009 USA


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AES - Audio Engineering Society