Pyramid PP12 Dual 12" 300W Subs Car Subwoofers + Monoblock R1100M Amp + Wiring New Pyramid PP12 Dual 12" 300 Watt 4 Way Car Stereo Hatchback Speaker System Full Stereo Output High Quality MDF Carpeted Enclosure Each PP12 Contains: Two 12'' Polymer Laminated High Power Woofers Two 3.4" Super Horn Piezo Tweeters Twin Bass Reflex Vents for Added Bass Response