Kicker PL7TDF Powered 12" Down-Firing Subwoofer vs Alpine W12S4 Dual 12" Ported Sub Box

Buy the Kicker PL7TDF if you want one box that does everything: it has a built-in 600-watt amp, a 12-inch square L7T sub, and a down-firing design that protects the driver and fits shallow spaces. The Alpine W12S4 package is a passive dual-12 ported box that needs a separate mono amp, but it moves more air and suits someone building a loud, forward-firing system. Owners rate the Kicker highly for output and convenience; the Alpine is the simpler, more traditional build with a single 4-ohm voice coil.

• Choose the Kicker PL7TDF if you want a powered, self-contained down-firing 12 that drops into a factory system with no separate amp to buy or tune.
• Choose the Alpine W12S4 if you already have a mono amp and want a large ported dual-12 box for maximum output in a truck or SUV.