Amazon.com: Visaton W200S-4 8" Woofer with Treated Paper Cone 4 Ohm : Electronics
Amazon.com: Pyle 6.5 Inch Mid Bass Woofer Sound Speaker System - Pro Loud Range Audio 300 Watt Peak Power w/ 4 Ohm Impedance and 60-20KHz Frequency Response for Car Component Stereo PLG64,Yellow : Electronics
Amazon.com: CES 3.5" GM Replacement Full Range Speaker 8 OHMS @ 10 WATTS : Electronics
Amazon.com: Pyle 5'' 200W 8 Ohms Mid Bass Mid Range Car Speaker Woofer Driver w/ 450Hz to 7kHz Frequency Response, 92dB Sensitivity, & Magnet Structure, (2 Pack) : Electronics
Amazon.com: Pack of 2 Full Range Bookshelf Speaker, 3 Inch 8 Ohm Anti-Magnetic HiFi Tweeter Wooden Enclosure Home Audio Woofer Multimedia Speakers (8Ω) : Electronics
Amazon.com: DS18 ZXI-654 6.5" Car Audio Coaxial Car Speakers with Built in Neodymium Tweeter and Kevlar Cone 2 Way 240 Watts Max 4 Ohm - Car Stereo Sound System with Removable Grill (2 Speakers) : Electronics
Amazon.com: Facmogu 2PCS 6.5 Inch Audiophile Full Range Speakers, RMS 30W MAX 50W 4 Ohm, HiFi Full Range Car Audio Speaker Drivers, Wideband Stereo Audio Loudspeaker Replacement - Yellow : Electronics
Amazon.com: Mcm Audio Select 8" Woofer with Poly Cone and Rubber Surround 70W Rms at 8 Ohm - 55-2971 : Electronics
Amazon.com: PyleUsa Single Voice Coil Car Subwoofer - 8 Inches, 200 Watts at 4-Ohm Car Audio Powered Subwoofer, Injection Cone with Rubber Edge, High-Powered Car Subwoofer, Audio - PLMW83 Black : Electronics