Amazon.com: Pyle Car Mid Bass Speaker System - Pro 5 Inch 200 Watt 4 Ohm Auto Mid-Bass Component Poly Woofer Audio Sound Speakers For Car Stereo w/ 30 Oz Magnet Structure, 2.2”
Amazon.com: Skar Audio NPX65-4 6.5" 300 Watt 4-Ohm Neodymium Pro Audio Mid-Range Loudspeaker, Each : Electronics
Amazon.com: Car Two Way Speaker System - Pro 4 Inch 140 Watt 4 Ohm Mid Tweeter Component Audio Sound Coaxial Speakers For Car Stereo w/ 20 Oz Magnet, 1.85” Mount Depth Fits
Skar Audio SDR-12 D2 12" 1200 Watt Max Power Dual 2 Ohm Car Subwoofer : Automotive - Amazon.co.jp
EDGELEC 100pcs 1 ohm Resistor 1/2w (0.5Watt) ±1% Tolerance Metal Film Fixed Resistor, Multiple Values of Resistance Optional: Amazon.com: Industrial & Scientific