🚀 go-pugleaf

In article <ga14RB3w165w@hale.cts.com>, system@hale.cts.com (System Administration) writes:
> 
> I'm looking for some good books or other sources for speaker enclosures,
> especially for car audio, and to a lesser extent, audio amplifiers for
> home and mobile use.
> 
> I have looked around locally, and been to the largest technical bookstore 
> here and havn't found a good reference outlining both proven designs on a 
> how-to level and going into depth into design considerations for
> your rolling your own.

Have a look at all the papers by Richard Small and Neville Thiele in
the Journal of the Audio Engineering Society (try engineering libraries
at your local university). I think the first series of articles in
sealed and vented box enclosures started around 1972. Otherwise look
out for a book (audio engineer's bible) by Berenak (I can't remember
the exact title). It contains information about everything from loudspeaker
and enclosure design all the way to microphone design. It's out of print
and VERY hard to get, but once again the local engineering library should
have one.

> Can a retangular tuned port be replaced with a tubular port of the same
> volume and depth?  It didn't seem to matter to me, but a friend of mine
> doing the same sort of stuff for a while wasn't sure either. 
  
Usually not. The port is very critical in vented enclosure design. Most
people tend to use circular ports rather than rectangular ones because
their performance is much easier to predict. Horn loaded enclosures
tend to use rectangular sections for a different reason (that's a
completely different kettle of fish).

    Sla/n go fo/ill,
                    Risky B.
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Geoff Swan (research & development)   _--_|\         swanee@megadata.oz.au
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