Peerless 830903 (AW-25i), cant find any parameters or info at all

I have 10 of the mentioned driver at home and planning to build enclosures for them for a movie theater system. I can't however find any parameters for them or really any info at all apart from that they have been available in a diy build kit from now bankrupt Finnish audiostore HIFITALO.

I tried contacting the peerless company but got no answer. Does anyone have anymore info on these or a clue how I could get the parameters I need to design and build a enclosure for them
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