Pioneer TS-WX130DA is a compact, under-seat active subwoofer designed for space-constrained vehicles, featuring a built-in 160W max (50W RMS) Class D amplifier and an 8" x 5-1/4" aluminum cone woofer. It offers selectable "Deep" and "Dynamic" bass modes via a wired remote, providing punchy bass in a slim 2-3/4" high