Here is the top line of Avatar subwoofers, assembled on an ultra-powerful motor and made in USA 4-inch high winding voice coil. These monsters are able to work under extreme overloads, both in mechanics and in rated power, with xmax of 60 mm in one direction!
The RMS power of these subwoofers is an impressive 3 800 W, and at the peaks it can handle loads up to 15 000 W.