My feeling is that serviceability isn't a factor for products at this price point, but I look at it as something that was assembled somehow, and therefore must be able to be disassembled! Maybe with a few scratches.
I could also envision that the speaker was coated or vinyl/plastic wrapped and it covers all of the seams and any fasteners. Maybe no screws on the box as gluing would be faster and cheaper, or perhaps it is an all plastic box, but I would still bet on 2 molded pieces and that the woofer has screws, and they are hidden by the decorative front panel. I'd try looking around the front panel, maybe after some hair dryer work.