[TenTec] Sweep display freezing on Orion

Jim Brown jim at audiosystemsgroup.com
Tue Sep 7 01:31:20 EDT 2004


On Tue, 07 Sep 2004 00:15:01 -0500, Grant Youngman wrote:

>Be curious to know how one measures the frequency response of a 
>speaker with a scope and VOM?  

As member of the Standards Committee of the Audio Engineering Society, I 
would be equally curious. 

Measuring the response of a loudspeaker requires considerably more 
instrumentation than a scope and a VOM. In fact, I'm not sure how one would 
make good use of a scope and a VOM. At a minimum, one needs a 
sweepable audio generator, lab-quality microphone and preamplifier, time-
windowed audio measurement system, and/or a reasonably well-controlled 
acoustic environment . And, of course, one must consider the directivity of the 
loudspeaker -- most loudspeakers exhibit considerable directivity, and the 
response on axis is very different from the off-axis response. 


Jim Brown  K9YC




More information about the TenTec mailing list