You will not get low end midbass extension with mid to low priced PA style drivers, at any volume, it's not a function they are designed for. That is why you'll see them listed as mids, not mid-bass or mid-woofers, they are not designed for that purpose. Even large 8's usually still have a 200-10000 range, just their niche. Loud and proud, screw the SQ if you will. Now Stevens, they make some very loud hi-end drivers that accomplish both. It's not that they distort either, they just don't reproduce music without totally coloring the sound. They are primarily focused on vocal ranges, thus their primary use in Public Address systems. I've heard some decent JBL titanium compression dome tweeters, that cost about $550 each, but they are an exception and would be brutal in a car.