Here are the production parameters on the DPL-10, our 10" dipole woofer using an XBL^2 motor with nearly 20mm of x-max. These are designed from the get-go for dipole operation. The goal is two of them, per side in a folded dipole arrangement. You can obviously do things like W, H, U or just a straight baffle. I'd say run over to John K's site and pick up a copy of his software. Its a pretty sophisticated Excell spreadsheet for dipole design. I have a copy but I'm ashamed to say not spent any time with it yet.
I'm working on a folded baffle design that fits under a 12" wide baffle with a pair of EX-6.5s on top. The goal is full-range dipole kit that is affordable and kicks some booty.
If you want to play with just the raw driver, they are $95 each or you can order four @ $350 plus shipping. These are not real heavy to ship so shipping should be pretty affordable.
Here are the T/S parameters.
Re: 6.5
Fs: 23Hz
Qms: 4.7
Qes: .91
Qts: .76
mms: 99g
cms: .47 mm/N
Vas: 73L
Sd: 333 cm^2
BL: 10.2
SPL: 81.7
X-max: 19mm
I can already short-circuit the emails for those of you modeling this in a box. Heh! Its only a 10" and it takes a HUGE box! Of course it does, its made to run on a baffle without one.
I can also already answer people who have concerns about the sensitivity. Its not low, not if you want something that plays deep on an open baffle. Its exactly what is required of a dipole driver on an open baffle that plays down to 20-30Hz. If it was more sensitive, it wouldn't play that deep! The only way to increase sensitivity is to increase the BL or decrease the moving mass. Both methods will push the f3 on the baffle up, and you end up equalizing (adding power) to get it back to where it was to begin with. Power is power.... you need a lot for dipole operation whether you equalize your way there or use the electromechanical properties of the driver.
Here is the 2Pi response in an infinite baffle.
These are in stock and I'll try to get the web development to get them on the site tomorrow.
