Mystery side-firing speaker - Acoustic Dimensions?

Don't know about your discovery, but I've found people either discard or sell cheap at garage sales some real audiophile-quality gems because they've replaced them with
'home theater in-a box" systems, or, in the case of this past weekend I bought for $20. a pair of Infinity RS6s and Yamaha integrated amp that my neighbor replaced with a Bose Wave Radio.
There's some very good equipment out there being discarded for up-to-date junk.

True - the list of stuff I've found at the side of the road is quite long and impressive (except to the spouse). Mostly speakers but some components too. I actually lugged these babies out to the street last weekend to get them out of the garage- lots of gawkers came and kicked the tires but no takers (missing one woofer) so I schlepped them back in the garage.

But this is one item that I just can't figure out - can't tell what its worth or what the company is. will probably end up by the pool, sound reinforcement for the other 4 pairs of speakers out there in the yard already.