Amazon.com: 2 x Phase Tech 6.5" Oak Bookshelf Speaker w/Tweeter 4 Ohm 150W Home Audio : 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
Amazon.com: 4 Channel Car Stereo Amplifier - 4000W High Power 4-Channel Bridgeable Audio Sound Auto Small Speaker Amp Box w/ MOSFET, Crossover, Bass Boost Control, Silver Plated RCA Input Output - Pyle
Amazon.com: BOSS Audio Systems CXX12 Car Subwoofer - 1000 Watts Maximum Power, 12 Inch , Single 4 Ohm Voice Coil, Sold Individually,Black : 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