High Efficiency Speaker Asylum

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Re: Intermodulation

Posted by djk on May 12, 2003 at 02:39:31:
In general those are known as 'wolf notes', and are quite interesting.
I was refering to frequency intermodulation distortion from doppler, a very un-musical sound.
The JBL 4435 studio monitor has a real problem with this on certain kinds of program material. Even though it has two 15" woofers, the 1Khz crossover to the high frequency section is the problem.
The Klipsch CF4 with the smaller 12" woofers and the higher 1.5Khz crossover have even more of the same problem.
The JBL 4350 studio monitor, while not as smooth sounding as the 4435, by virtue of its 250hz crossover to the midrange has no FMD.