From: utzoo!decvax!harpo!floyd!saf Newsgroups: net.audio Title: Re: speaker cabinet materials Article-I.D.: floyd.1336 Posted: Wed Mar 23 08:19:57 1983 Received: Thu Mar 24 07:50:18 1983 References: reed.248 There have been many experiments using other than wood for speaker cabinets. Clay pipe, etc. has been used with sucess. The main factor seems to be low resonance. This lets out thin steel sheets of course. Another factor concerns standing waves in the enclosure, so you still have to worry about the aspect ratio as with wood. Finally, damping material is a must. David Weems has several books out on the topic of enclosure design and in one of the books (at least) deals with "unique" cabinet materials. I believe his books are published by Sams and should be easy to find. Don't forget a final problem: Your speakers are not likely to be very portable - of course this also makes them theft-proof! Steve Falco BTL Whippany, NJ