ALPINE Car Stereo CD/USB Receiver w/ Advanced Bluetooth W/ Alpine 500 Watt RMS Mono Amplifier Class D Digital Car Amp+ 10" 1500 Watt Dual 4-Ohm Car Audio Subwoofer - Walmart.com
Alpine - SWG-1044 10” (25cm) Subwoofer (4Ohm)
Alpine - SBG-1044BR Ready to use Bass Reflex Subwoofer