Even Greg Timbers called the 4345 "fun" because of that big 18

If ever you can find/create the space, I highly recommend the 2245. I've got two B460 clones and they pound, the best bass I've heard yet below 100hz. I haven't been able to bottom 'em out either. Not that I actively try, as that sound is rather soul crushing, but it was an issue for me with every other 12" JBL I've had.