1. V27n2 of the BAS speaker
has been published electronically. It features a 13 page summary
by John S. Allen of one of the more significant BAS meetings in
recent years: a panel discussion on concert hall acoustics, featuring
Leo Beranek, acoustician; John F. Allen, theater sound system designer;
Jonathan McPhee, conductor, David Griesinger, designer for Lexicon;
Glenn KnicKrehm, president of the Constellation Center; and BAS
member Stephen Owades, TFC singer and student of acoustics. There
are some unique photos of Symphony Hall which you can only see in
color in the electronic version of the Speaker. Also reports on
the WCES. 39 pp
2. DIY'ers owe it to
themselves to check out Siegfried Linkwitz's website, www.linkwitzlab.com.
He is a retired Hewlett Packard engineer, known for the famous Linkwitz-Riley
24 dB crossover, and is obviously enjoying his retirement doing
audio projects. His new loudspeaker, Pluto, is said to have most
of the performance of his more expensive speaker, the Orion, at
a modest cost. As usual, complete construction information is supplied
as well as semi-kits and finished product. He also describes modification
of an inexpensive ($1.80!) 1/4" microphone for measurement
and near field recording use. He shows how to use it for surreptitious
recordings.
David Hadaway
President, Boston Audio Society
email:
dhad000@yahoo.com
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