11-20-2003, 01:02 PM
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#5 of 6 
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Member
Location: Katy, TX
Join Date: Aug 1999
Local Time: 06:29 PM
Local Date: 12-04-2008
Posts: 6,512
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Quote:
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the signal goes FROM the X-Over to the sub plate amp TO the X-30 crossover unit.
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There it is again: The signal goes from the X30 to the sub amp (okay, sounds right) and then back to the X30??
Doesn’t matter, really. If you’re trying to figure out if the X30 is defective, here's how to do it. You will need test tones and a SPL meter. You also have to know what the X30’s slopes are (12dB/octave, 18dB/octave, etc.).
To test the low pass, disconnect the mains and play two test tones, one at the crossover frequency and one an octave higher. An octave higher is double the frequency – i.e., if the crossover point is 80Hz, then an octave higher is 160Hz. The second tone should measure lower pretty close to the amount of slope.
Just the opposite for the high pass, except you half the figure for the second tone – i.e., 80Hz vs. 40Hz.
Regards,
Wayne A. Pflughaupt
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