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Old 21st January 2010, 03:08 PM   #11
Vix is offline Vix  Yugoslavia
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Old 21st January 2010, 03:22 PM   #12
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Thanks.

human.bin, they were new drivers, I used an old Eltax Monitor 3 speakers crossover just to make sure the drivers actually worked.

I considered full range, but would have had to spent quite a bit more on drivers to get something capable of full frequency response.

For anyone interested the smaller 20cm bowl is 4.1L without any cutouts. vs 9.1L for the 28cm diameter version i used.

Could easily be suspended from the ceiling. I also thought about using a sonotube and a 10" woofer to fire up at the sphere for true omni directional bass.

At some point I plan to build a B&W 800D style 12" or 15" woofer cabinet for them to sit in, complete with granite plinth, (engineering granite tables can be had cheap on eBay), along with some Open Baffle speakers, and some horn loaded speakers and ...........
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Old 21st January 2010, 03:29 PM   #13
Key is offline Key  United States
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Quote:
Originally Posted by Studio Au View Post
I also thought about using a sonotube and a 10" woofer to fire up at the sphere for true omni directional bass.
That would be cool. You could use extended bolts or something to put the sphere above the woofer. I always thought it would be cool looking though if somehow (maybe a driver with a large VC) you could fashion a phase plug that doubles as a suspension for a driver above it.
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Old 21st January 2010, 03:49 PM   #14
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Just an idea:
How about using them with Jordan JX92S ? They need 8L volume according to their plans.... port 3cm x 11cm (could be challenging)
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Old 21st January 2010, 03:53 PM   #15
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or maybe something like alpair7 sealed and the omnidirectional woofer like linkwitz plutos... how would behave the bass driver seeing a sphere over itself?

anyway stunning looking speakers indeed, congrats
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Old 21st January 2010, 04:40 PM   #16
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link to the Jordans, UK site Wilmslow Audio.: https://www.wilmslow-audio.co.uk/cat...a8814184b73ffd
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Old 21st January 2010, 04:50 PM   #17
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Very nicely done.

but how did you find the center to be able to scribe the cut line? Looks too good to be measured with a ruler. (or at least if I measured with a ruler it wouldn't be that good)
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Old 21st January 2010, 04:53 PM   #18
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that looks like a simpler build than some of the Ikea flatpacks ive built!!! And THAT is a compliment! Might well have to try the smaller ones with some lazy 4" Audax i have lying around...
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Old 21st January 2010, 04:57 PM   #19
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>>> that looks like a simpler build than some of the Ikea flatpacks ive built!!!

LOL! Yes, great looking speaker! Love the look!
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Old 21st January 2010, 05:02 PM   #20
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Iain, wasn't that hard.

I drew out the bowl full scale with the driver hole (picture before the sash cramp).

Then with calipers measured to the outer edge.

The bowls have a 3" flat base, measured the central point and using compass drew the cut line.
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