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Old 05-16-07, 11:14 AM   #10 (Link)
 
brucek
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Re: Need some thoughts on a large dual 15", dual ported design.


Quote:
I'd switch to two TC 2000 15" svcs, use a single 10" diameter port, and raise the tune to ~14hz.
Interesting.

I do see the advantage of switching to a 10" single port. It certainly helped with the velocity.

I don't really see the advantage of the driver change. If I switch to a dual 4 ohm coil in the 15" SoundSplinter so that we're comparing the same configuration with the TC-2000 15", there doesn't seem to be much difference between the two as far as WinISD is concerned except a bit of velocity gain. The comparison is below...

Perhaps I've made an error though. I'm trying to learn this stuff.


SPL compare
SPL compare.jpg

EXCURSION compare
EXCURSION compare.jpg

VELOCITY compare
VELOCITY compare.jpg

brucek


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