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In Reply to: Ampex 406/407/456 posted by dainisk on January 2, 2002 at 02:23:23:
Eddie Ciletti has a great website, [ http://www.tangible-technology.com ] which deals with this and other problems. -The tape needs to be "baked" very slowly and at a carefully controlled temperature to dry out the binder layer, which absorbs moisture from the air over time. After 'baking', they can be played, but revert to their 'sticky' selves more quickly than the problem originally ocurred.You'll find the link somewhere on his main page, under "tape" I recall. -He's found that a particulare food dehumidifier works very well. As long as your tapes are 1/4-inch or half-inch, you won't even need to modify the dehumidifier. -I'm not sure if the unit acommodates plastic 'cine' spools, but I believe it will handle NAB-center spools up to 10.5 inches diameter.
Don't attempt to play any of the tapes until baked... especially the 407, which has a (long play) thinner backing. You run the risk of causing all sorts of damage. Ampex used to offer a freee baking service in the UK after this problem first arose in the early eighties, but I'm not sure that's still available.
Ampex product continued to exhibit this problem long after it was announced that they had made changes to try and solve the issue. I know that several other brands suffered from "sticky tape syndrome" but generally rather less than Ampex. -Ampex was the de facto standard tape for a lot of studios, and this problem is quite common.
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- Re: Ampex 406/407/456 - SSL Tech 06:29:05 01/02/02 (0)
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