I purchased a sub box with 2 12" subs used a few years ago (haven't used it yet, mind you). The subs are unmarked on the cone, and on the magnet is

HIAIS Engineering Standards
by THE REAL SPEAKER COMPANY

There is a gold sticker on one of the baskets with RXS1240 printed on it. I think this speaker was manufactured by Cambridge Speaker Inc. based in Cambridge, ON, and they have apparently gone out of business. Has anyone ever seen subs from this company before, and would anyone happen to have any information on them? I'd like to know some driver parameters. Many thanks!

Shawn