BobCat: I have two different sets of numbers for these, from the mid 80's to early '90's. I am away from home now, but give me a week, and I can dig up Le and Re for you, too. That is, Le = voice coil inductance, and Re = dc resistance.Also, Pyle had sheets of suggested boxes... but I find running the numbers through BoxPlot gives more and better possibilities.
Oh, to interpret those numbers, W820... the W series was a pro audio woofer, and 820...8" dia with a 20 oz magnet.