The Rl-p is quite a heavy subwoofer is there any special way to secure it to the front of the box? I've heard of using t-nuts to help secure it does that help? Also do u think the box I'm building to support just one sub will need to be braced or will it just be fine without them? The driver is about 30 pounds. Thanks Also do speaker terminals make a difference or should I just pick one up at radio shack?