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P.Audio BM12CXA -- need crossovers
P.Audio BM12CXA -- need crossovers
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Old 5th June 2020, 10:04 PM   #1
noviygera is offline noviygera  United States
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Default P.Audio BM12CXA -- need crossovers

Hello,

Anyone have access to the proper passive crossovers or schematics for the BM12CXA + BM-D440 compression drivers?

This is a coax 12"


thanks!
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Old 6th June 2020, 11:44 AM   #2
chris661 is offline chris661  United Kingdom
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I don't have them on-hand, but it's easy enough to design a passive crossover if you've got some measurement gear.

Chris
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Old 6th June 2020, 12:15 PM   #3
BesPav is offline BesPav  Russian Federation
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Quote:
Originally Posted by noviygera View Post
Anyone have access to the proper passive crossovers or schematics for the BM12CXA + BM-D440 compression drivers?
Going passive you'll need first to move crossover point higher due to relatively low order and second put resistance for compensation of higher HF sensitivity.

First will result in bad directivity match. You'll have narrow needle at 1,5-2 kHz from 12" while 1" exit driver will be wide like 60 degree. This will provide you with a bad beaming across a whole 1-3kHz band where maximum of human hearing are.

Resistance at HF driver will highly reduce damping factor which is critical to high-quality factor HF driver.

So, there are a way better to use active filters.

Do you have some kind of measurement setup - mic and audiocard?
 

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