Woofers have changed so much over the past 10-15 years, like the style and nature of the woofer. I've seen the rise of like noobs into car audio having 5000w as their first or one of their first systems, which is just mind blowingly awesome to me. There's a rise of many many 1500w and many 2000-4500w+ subs now, and there's a trend in the higher wattage bass scene of somewhat lower Fs's and high xmax, and a lot of this is what customers want, but also tech improvements, motor improvements. Some long standing companies used to have big woofers with Fs's in the high 30's and lower 40's iirc, now you see huge xmax, high motor force and huge Mms woofers with lower Fs's. It's a great shift, and I think adds some musicality overall, too, for high wattage systems. So much fun doing 20 hz series 6th's for people with high xmax subs like sundowns.