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Old 13th December 2006, 09:44 PM   #1
diyAudio Member
 
Join Date: Jan 2004
Location: Minnesota
Default point source / omnipole idea... have some questions.

ok,

here is my idea:

use 4 4"-6" drivers and one tweeter per channel.

each driver on each side of enclosure and tweeter on top panel.

for a 4" driver, what frequency should i start rolling off HF so that they act like a omnipole at all frequencies at say 5 feet away?

and the same ? for the 6" drivers.

i want to run them fullrange and just put a cap in series with tweeter for x-over.

so... will a 6" drivers on each side act like a omnipole at higher frequencies, or should i stick with the 4" drivers?

i hope you understand my question.

Thanks!
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Old 14th December 2006, 07:29 PM   #2
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no answers yet?
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Old 14th December 2006, 10:39 PM   #3
Geoff H is offline Geoff H  Australia
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Join Date: Oct 2006
I think you need to look at a polar plot for the driver. 3db down at 45 deg off axis is where they will overlap. Above that F they will start to beam.

Rather than have a driver on the rear, I would place it on the top, or 2 on the front.

I tried an array of 4 4" DCs on an arc many moons ago. Spread the upper mids OK, but couldn't get the transient attack I wanted.

You may have to build a mule and try different combo's.

Geoff.
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