old school sub

As the title state's I'm looking for an old school Cerwin Vega stroker particularly the 12 in a D4 since I already have one but am willing to look at and possibly buy other sizes and coil configurations thanks in advance

So while going through our attic my Dad pulled out a box full of random car stereo equipment from what I'm guessing to be the late 80's early 90's. Along with that box came 2 10" Soundstream subs, anybody have an idea if they'll still beat? Or are they probably toast?

i just got two old avalanche subwoofers and i need help finding out more about them because i cant find out any thing about them on the webs. they are 15inch subwoofers and they are about 6 1/2 inches deep. it says 400 watts and 4 ohms on the magnet. the dust cap says AVALANCHEusa in the middle...