We are not having good experiences with 243x on 2332 horns over in the "Quick and Dirty" thread....
"Optimized Aperture," I believe it is....
We are not having good experiences with 243x on 2332 horns over in the "Quick and Dirty" thread....
"Optimized Aperture," I believe it is....
Have you found and tested one that can be crossed over at 800Hz or lower?Originally Posted by Zilch
Widget
Nope. 1 kHz, basically.
There's the BIG horns, of course: http://www.jblpro.com/pages/componen...25354.htm#2352
Yeah, I've been noticing that, thus my dismissal of the idea for the moment. That driver seems to work better on the TAD type horn (but that does not allow for a UHF driver in the spacing I want.
What do you mean? I have taken "O.A" to refer to the liberation of the driver throat/horn entrance expansion rates that have been locked in since the thirties when they were optimized for much lower frequencies than are generally used now. The 2447,245x and 243x families of drivers do not have throats with those expansion rates and therefore do not need old style horns with the expansion rates married to those throats. Ergo . . . a new horn entrance called "O.A" Am I wrong about this? Do you think there is a problem with the new horn entrance design?
David
Yeah, I see that, too. The 2435 may be a good driver for the 4348 style of speaker with that horn.
David
O.K., H9800, then, for 800 Hz, and you can tell US if the back cap is a problem....
Regarding "Optimized Aperture," I just see "Specifically designed for 2447 and 2451" and wonder if 243x is really applicable as well.
I thought you had found that playing on the TH4003 the back cap was irrelevant. Anyway, I think the 4348 crosses into the horn at 1 or 1.2 kHz.
I don't see why not. I have wondered about this because of the differences in the diaphragm sizes, but I think that would just make a difference in pressure, which would vary all over the place anyway. But I dunno . . . . I have not seen the 2332 described as "O.A" nor dedicated to the 2447 and 2451. That literature for the 2352 etc that says that I believe predates the production of the 243x family of drivers. But you are right in that the 2332 (and the 2381) are both 1.5" drivers that have never been used in a production speaker with the 243x group.
Anyway, your testing is more interesting to me than all my conjecture.
David
DMS-1 data sheet and others call it that.
It's also used for HF (nominal) with 2451 in 5671 theater system crossed at 2.3 kHz.
http://www.jblpro.com/pub/cinema/5671.pdf
There are currently 1 users browsing this thread. (0 members and 1 guests)
Posting Permissions
Reply With Quote