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From: rjr@mgweed.UUCP (Bob Roehrig)
Newsgroups: net.audio
Subject: crossover design
Message-ID: <21001@mgweed.UUCP>
Date: Tue, 15-Oct-85 13:24:05 EDT
Article-I.D.: mgweed.21001
Posted: Tue Oct 15 13:24:05 1985
Date-Received: Thu, 17-Oct-85 01:20:00 EDT
Organization: AT&T Information Systems - Montgomery Illinois
Lines: 18


Someone asked about crossover information.

I made my own for a 3-way system that I use. The design information  was
obtained  from  a  book called "The Recording and Reproduction of Sound"
which was published by Howard Sams in 1952.  The  information  is  basic
high and low pass filter design. The type of network I use basically has
two components for each speaker: series L and shunt C for the woofer and
series  C and shunt L for the tweeter.  For the mid range speaker I used
a combination hi/lo pass.  The crossover frequencies I used were 500  Hz
and  3  kHz.  The big problem was finding the large capacitors necessary
for the low frequency. In my case,  two  23  uf  caps  were  needed.   I
finally  lucked  out  and  found  some  fairly  large mylar caps I could
parallel  to  get  the  23  uf.  I  do  not  like   using   back-to-back
electrolytics!

Bob Roehrig