do you have an amp for your subs?, jbl makes a sub in the same product line as your main cabs, the jrx-118, i haven't used them but would assume the quality is similar to the full range. i saw them for $400 each for the passive(non-powered) version. they also make an active version(built in amp). you might want to dig around for used stuff. just make sure you listen before you buy.

thanks

I dont have an amp but I can rent one for $25 so those will be great...Thanks again