Please healp with info on this subwoofer

I found this rather unique morel subwoofer on my neighbour's garage sale, well at least to me.. I never seen this kind of subwoofer with dual motor one on the back and one is on the front of the cone

I forgot to snap photos of them, but it said morel pp8

He asked USD$ 40 each (he got 2 of them). It's in excellent condition and he said he never got the chance to use them. It was intended for his car audio system back then.

Is it any good? Anyone got more info on this subwoofer?

Thx before
 
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Finally snap these subwoofers, just for the unique look of it and the price (I could talk my neighbour down for equivalent USD40 pair)

Don't have plans for them yet, and I still can't find much info from the web on these, can anyone help with the datasheet/ spec, or anything?

Did my pict came up?
 

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