[erich]

On Sun, 04 Feb 2007 16:20:12 +0000, zibbit wrote:

I have been told and have been reading about asbestos used in AR speakers
(maybe others). Does anyone know when AR used fiberglass that may have
contained asbestos and what circa speakers might contain asbestos i.e. is
there any reference that you know of that indicates which AR model numbers
might contain asbestos and the year of manufacture?

Any information you might have on the use of materials containing asbestos
in vintage speakers would be on interest to me.

Fiberglass does not contain asbestos, the two materials are completely
different. In the US bans of asbestos started going into effect
around 1973. Speakers made prior to that date could potentially contain
asbestos.

This would only be a concern if you plan to open up the speaker and work
on it. If left undisturbed and in a sealed box (AR speakers were acoustic
suspension) it is not likely that the asbestos would be a hazard. It is
when the asbestos becomes airborne that is becomes a problem.