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Old 5th January 2013, 06:02 PM   #1
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Default Erse crossover cutoff frequency?

Hey diyaudio community. Joined your forum today because there's lots of good info here and I had a question.

I have been putting together a 3-way open baffle speaker set and decided to use Erse 500/4000Hz 12 dB Linkwitz-Riley 3-way crossovers ProZx three way. Received the crossovers yesterday and hooked them up to my speakers.

Question: It seemed like a large range of the music was coming from the 15" woofer. I ran some test frequencies and it it turns out there is a dB jump at just above 500Hz and doesn't really start to drop off until almost 2000Hz, not what I was looking for. Am I doing something wrong or is it the crossover?

Drivers: 15", 8" and 4" 8 ohm vintage alnico drivers that all sound on their own.

Thanks a bunch guys. BTW I just went and switched the woofer from the "w" to the "m" just to see if it was labeled wrong and it's not.
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Old 5th January 2013, 06:34 PM   #2
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Loudspeakers it's not like a Lego.
Without a properly designed crossover, just by chance, your chances of succeeding are slim.
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Am I doing something wrong or is it the crossover?
First make sure the crossover it's set for the 8 Ohm load.
Edit: I have to say that those type of crossovers are for pro drivers and not the classical 3-Way.
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Last edited by Inductor; 5th January 2013 at 06:37 PM.
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Old 6th January 2013, 02:00 AM   #3
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Thanks for your response. I figured that the crossover would not be a perfect match but would suffice until I figured out a better situation. Maybe that is not the case.
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Old 6th January 2013, 10:56 AM   #4
Dissi is offline Dissi  Switzerland
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Quote:
Originally Posted by rms1 View Post
Question: It seemed like a large range of the music was coming from the 15" woofer. I ran some test frequencies and it it turns out there is a dB jump at just above 500Hz and doesn't really start to drop off until almost 2000Hz, not what I was looking for. Am I doing something wrong or is it the crossover?
It's the crossover. The woofer usually needs a very large coil in open baffle. For example, the Manzanita has a 20 mH inductor!
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Old 7th January 2013, 03:42 AM   #5
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Manzanita has some good designs for sure, thanks for bringing those up. A 20 mH inductor costs as much as the complete crossovers i got!

I was also looking at Lampizator and Quarter-wave designs. I'll figure it out eventually.
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