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From: dlin@prodigal.psych.rochester.edu (Daniel Lin)
Newsgroups: rec.audio.high-end
Subject: crossover design
Message-ID: <9101@uwm.edu>
Date: 23 Jan 91 13:56:55 GMT
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Originator: tjk@csd4.csd.uwm.edu



I am in the process of designing a crossover for a three way speaker 
system and have come across a problem concerning the proper crossover
point. According to Weems' book on speaker building, the crossover 
frequency is defined as the frequency at which the output of a given
driver is reduced by 3 dB. Weems then goes on to present formulas to
determine the required components for that crossover frequency(i.e. both
drivers are 3 dB down at the desired crossover frequency). 
However, other articles concerning proper
crossover design have stated that both drivers should be 6 dB down at the
crossover frequency in order to achieve a flat summed response at that
frequency. Is there a contradiction here? If there is, which one is
correct, and how does one determine the proper components for the
crossover? Any tips concerning these questions would be greatly
appreciated. 

Daniel Lin
University of Rochester