Open baffles don't always need a lot of power. I heard the spatial audio turbo m3 in salt lake at their assembly facility through the 25 wpc Rossi integrated. They easily played at 90+ db 14 feet back. They sounded really good. Very smooth, detailed and huge sound stage.
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Based on Clayton shaw's comments from this link. Spatial audio intends to sell the bottom half of their X2 model as an open baffle sub http://www.audiocircle.com/index.php?topic=153006.60 |
seanheis1, an open baffle sub, or even woofer, has advantages and disadvantages in comparison to boxed ones, whether sealed, ported, or infinite baffle. No enclosure resonances (though even the baffle, if insufficiently engineered, can itself be resonant), no room loading in the side-to-side plane (due to the figure-of-8 radiation characteristics of all dipoles, even at low frequencies), both making possible less boomy sound. But the stopping and starting characteristics of the woofer driver is a determining factor as well. The disadvantages include the less-maximum-output-capability of OB designs. Once again, the intrinsic capabilities of the driver is a prime determiner in the quality of the sub or woofer. Now, imagine taking the intrinsic advantages of the OB woofer, and combining that with the benefits of servo-feedback, long used in some very high quality woofer systems (including the bass columns of the Infinity IRS and RS-1b loudspeakers, as well as the well known subs of Velodyne). Such was the thinking of Danny Richie of GR Research, who specializes in OB speaker design, when he learned of the new servo-feedback system by fellow Texas resident Brian Ding, designer and owner of Rythmik Audio. The two put their two big heads together, and the result is their State-Of-The-Art OB/Dipole Servo-Feedback Subwoofer, the only such design in the world, co-marketed by both companies. |
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