Probably a bit strange, but this is my open baffle soundbar (and HT screen: 175" Silver Ticket Screen). This "bar" (though there are actually 2 sections with one section at the rear with the tweeters) is about 14ft wide (slightly wider than the nearly 13 feet of Screen). The "bar" is also almost 20"s high, and is open to the rear with cloth draping it. Further, the "bar" has 3 channels (left, center, and right) with each channel composed of 1 - 1.5" cone tweeter, 4 - 4" fullrange drivers up-firing, and 1" 10 pro woofer up-firing. Due to the "up-firing" orientation this is the only design I've ever seen that is both radial AND open baffle (though obviously the tweeters are "nude" dipoles). The left and right tweeters have some cotton rebond insulation covering most of their front output - this was done to decrease the output close to the near seats for each channel while still having good spl/output for the far channel (..in other words: so the person in the left seat wasn't hearing a great deal of left channel and the person in the right seat wasn't hearing mostly right channel). Sadly I still haven't gotten around to the tweeter "bar's" covering nor have I placed a curtain around the screen to limit light-bleed to the cabinet to the left, ceiling, etc..
(..and yes, I screwed up with the build in a few places, particularly the molding at the bottom and the joint spanning the front panel of the "bar".
Still, it's been quite serviceable over the past few years.)
(..and yes, I screwed up with the build in a few places, particularly the molding at the bottom and the joint spanning the front panel of the "bar".

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