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Old 10th July 2012, 04:32 PM   #21
diyAudio Member
Join Date: May 2010
Location: South East USA
Originally Posted by Conrad Hoffman View Post
I still use a signal generator and small power amp, a resistor and a meter or scope. I don't like the added mass method and usually knock together a test box or an adapter for some existing box. The numbers I get are generally very close to manufacturers numbers (at least the good ones). The signal generator can be any cheap thing, from antique to modern and the scope can be equally as decrepit. Most meters do OK at low frequencies and it doesn't have to be true RMS. The stuff just has to work and be reasonably accurate. I have a sound card and all the rest but unless I were doing a large number of woofers it's as easy to use the dinosaur methods just like Weems and Speaker Builder described them.
Could you perhaps point me to an on-line resource for how to perform this test? I have the gear, but no idea how to hook it up and interpret the results (for speaker measurement).
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