full range driver bipole line array idea.

fazman · 5th January 2006, 03:19 PM

I posted this question in the full range forum so pardon the double post.
Had an idea of doing a bipole line array using a Hi Vi BS3 3" inch full range driver using 5 or 6 in the front and 5 or 6 in the back with the bottom half of the enclosure filled with sand for stability.
I realize there will be some comb filtering issues but are there any other issues to consider that would not make this a formidable project?
They would be crossed over to a sub and I might use an EQ to smoothen things out depends on the final outcome.
Also was wondering if I should cross the rear drivers over down lower to improve the overall baffle step effect.
What do you guys think?

Scottmoose · 6th January 2006, 11:26 AM

I also posted a shorter ersion of this reply in the full-range section. Lobing problems will probably occur -I don't know these drivers, do you have a link? Depends on how large they are. 3" or over and it's definate I would say. Smaller, and you might get away with it, but that's a very short line -too short to be worth the effort I suspect, though i speak under possible (probable) corection.

Going bipolar will remove baffle-step problems, but other than that I'm not sure of any benefits in this particular case. Dave, Jim (resident bipole and line-array experts respectively), any thoughts or suggestions? I'd be interested in finding out myself to be honest.

Best
Scott

el`Ol · 7th January 2006, 03:36 PM

I just came across the linaeum concept (a bipolar supertweeter, related to a ribbon). It is in the price range of a soft dome, not really cheap in a line array, but definitely cheaper than ribbons. The bipolar version is said to be sold by radioshack, but I didn`t find it, just complete speakers. Aurasound have a closed version.

regards,

Oliver

5th January 2006, 03:19 PM	#1
fazman diyAudio Member Join Date: May 2005 Location: Windsor Ontario	full range driver bipole line array idea. I posted this question in the full range forum so pardon the double post. Had an idea of doing a bipole line array using a Hi Vi BS3 3" inch full range driver using 5 or 6 in the front and 5 or 6 in the back with the bottom half of the enclosure filled with sand for stability. I realize there will be some comb filtering issues but are there any other issues to consider that would not make this a formidable project? They would be crossed over to a sub and I might use an EQ to smoothen things out depends on the final outcome. Also was wondering if I should cross the rear drivers over down lower to improve the overall baffle step effect. What do you guys think?

6th January 2006, 11:26 AM	#2
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	I also posted a shorter ersion of this reply in the full-range section. Lobing problems will probably occur -I don't know these drivers, do you have a link? Depends on how large they are. 3" or over and it's definate I would say. Smaller, and you might get away with it, but that's a very short line -too short to be worth the effort I suspect, though i speak under possible (probable) corection. Going bipolar will remove baffle-step problems, but other than that I'm not sure of any benefits in this particular case. Dave, Jim (resident bipole and line-array experts respectively), any thoughts or suggestions? I'd be interested in finding out myself to be honest. Best Scott __________________ www.wodendesign.com (commercial site) www.frugal-horn.com www.frugal-phile.com (community sites)

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7th January 2006, 03:36 PM	#3
el`Ol diyAudio Member Join Date: May 2005 Location: Bavarian Forest	I just came across the linaeum concept (a bipolar supertweeter, related to a ribbon). It is in the price range of a soft dome, not really cheap in a line array, but definitely cheaper than ribbons. The bipolar version is said to be sold by radioshack, but I didn`t find it, just complete speakers. Aurasound have a closed version. regards, Oliver