Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 exptools 1/6/84; site ihuxk.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!ihnp4!ihuxk!rs55611 From: rs55611@ihuxk.UUCP (Robert E. Schleicher) Newsgroups: net.audio Subject: Re: Re: Speaker fusing (particularly wit - (nf) Message-ID: <856@ihuxk.UUCP> Date: Fri, 18-Jan-85 13:18:32 EST Article-I.D.: ihuxk.856 Posted: Fri Jan 18 13:18:32 1985 Date-Received: Sat, 19-Jan-85 01:29:17 EST References: <37@angband.UUCP> <55100069@trsvax.UUCP> Organization: AT&T Bell Labs, Naperville, IL Lines: 21 Maybe someone can comment on this, but it was my impression that with most modern tweeter designs, the common cause of failure is not a transient, but rather thermal damage from sustained high-frequency content. This is in contrast to typical woofers, in which the chief cause of damage is excess cone excursion during transients. Thus, a single fuse may well protect both the woofer and tweeter. When I bought my Advents (6 years ago), they enclosed a specific fuse recommendation that would prevent thermal damage to the tweeter (which was the weak point of Advents in their original design; mine had a ferro-fluid cooled tweeter that was more robust), and presumably protected against most woofer damage causes. Thermal damage in tweeters makes a kind of intuitive sense, as with dome tweeters, or ribbon designs, or EMIT (Infinity), there isn't really a cone to "pop out", and you're really worried about power levels, not peaks Also, many "experts" advise that the most potentially damaging music (for speaker damage) is synthesizer music, which typically has much more sustained high frequency content. Bob Schleicher ihuxk!rs55611