Dayton Audio DS215-8 8" Designer Series Woofer Speaker
PSI-8 – PSI Car Audio
AudioPipe TXX-BDC4-8 1000 Watt Car Audio 4 Ohm Speaker DVC Subwoofer, Black - Walmart.com
Dayton Audio DCS205-4 8" Classic Subwoofer 4 Ohm
8" Subwoofer Speaker Box Enclosure Car Speaker Sub Box 7.25" Inside Di – AK Audio
Amazon.com: Lanzar 8 inch Car Subwoofer Speaker - Black Non-Pressed Paper Cone, Aluminum Voice Coil, 4 Ohm Impedance, 800 Watt Power and Foam Edge Suspension for Vehicle Audio Stereo Sound System - MAXP84 : Electronics