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Help to design H frame subwoofer
Help to design H frame subwoofer
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Old Yesterday, 09:23 AM   #41
bentoronto is offline bentoronto  Canada
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Join Date: Jan 2008
Location: Toronto and Delray Beach, FL
Help to design H frame subwoofer
Originally Posted by David McBean View Post
Hornresp takes into account the solid angle into which the H-Frame or U-Frame system radiates.
Yes, I supposed you did have a working simulation of the basic driver mounting.

Originally Posted by David McBean View Post
The simulation model is valid at those frequencies where the dimensions of the system and the distance from the wall or walls are small compared to the wavelength, and where the system radiates symmetrically into the solid angle.....
Yes, that sounds dandy until somebody asks, "Hmmm, I wonder what distances from the wall he's talking about?".*

From what you say ("small compared to..."), it seems to me, the answer is that your model loses validity around 3 inches from the wall for the treble and somewhere beyond a foot or two for most of the rest.

Please correct me if wrong. Anybody have measurements - which ought to take about 5 minutes to simply move your dipole more or less distance to the back wall?

* Are there problems with your simulation for the other kinds of cabs when they have much depth, even if pushed back to the wall?
HiFi aspirations since 1957. "When the toilet paper of Experience is depleted, the backside of Reason goes unwiped"

Last edited by bentoronto; Yesterday at 09:25 AM.
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