What subwoofer is this?

I saw an interestingly built subwoofer and I'm wondering if it's a design that's familiar to anyone. It measures 17" tall, 12" wide, and 4" deep with no visible driver. There are 3 ports on the narrow 4" side and one port on the back under the plate amp. The amp looks like a Rythmik Audio A370-SE. Photos attached
 

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