Hello, I am new to this forum.

When I was DJ some years ago I had a set of JBL speakers K140 with double reflex cabinet.

I still have in my possesion 2 K140, 2 passive crossover and 8 tweeters.

I am wondering if I could use those speakers to build a subwoofer. I am looking for specification to built such a box and what type of amp I could us to drive it.

This sub will be use as part of a pro audio set up.

Thanks for any help.

Richard