Hi Pierre:
> Reading the standard, I understand that the cloth used on the front of the
> loudspeaker (external to fire enclosure) has to be tested according the
> "tablet test" (see Table 13).
As I recall (from the UL standard), the tablet is
hexamine.
I have purchased tablets from:
IMS Plus (International Military Surplus)
http://www.imsplus.com/ims28.htm
I purchased the tablets on-line. My first order
was lost, but they sent the second order without
charging me for the lost order.
> Do you know this test ?
No.
(Some years ago, I required some means of igniting
something. I did some research of the UL standards
and found that UL used the hexamine tablet for
igniting speaker cloth. Since the tablet was an
established source of ignition, I've used it since
then whenever I want to test for ignition of some-
thing.)
> Do you know if this information can be provided by the cloth manufacturer ?
You might check to see if the cloth is UL-Recognized.
If yes, then the cloth manufacturer submitted the
cloth to UL for testing.
Best regards,
Rich
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