Amazon.com: Planet Audio AC1200.4 4 Channel Car Amplifier - 1200 Watts, Full Range, Class A/B, 2-4 Ohm Stable, Mosfet Power Supply, Bridgeable : Electronics
New Pair SSL SS12 12" 800 Watt Car Audio Subwoofer 4 Ohm SVC 400W RMS Sub
Amazon.com: BLAUPUNKT GTX620 6.5" 2-Way Coaxial Car Speakers 300 Watts 4 Ohm : Electronics
Mini Hobby Speaker - 2 inch 4 Ohms
Amazon.com: Genius Audio GFX-55X4 Full Range Powered Car Amplifier Multichannel 1200 Watts Max Class AB 2-Ohm Stable with Power Protection System to Boost Speaker and Woofer Performance : Electronics
Speaker - 3" Diameter - 4 Ohm 3 Watt : Amazon.ca: Everything Else
Amazon.com: CT Sounds OZONE-10-D4 1600 Watts Car Subwoofer Dual 4 Ohm : Electronics
Amazon.com: Cadence Q75T 1 Inch Hybrid Tweeters, 200 Watts Max Power, 4 Ohm, 100 Watts RMS Car Audio, Pair : Electronics
Amazon.com: PyleUsa Two-Way Component Speaker System - One Pair 6.5'' Two-Way Component Kit, 360 Watts w/ 4 Ohm Impedance and 1'' High-Temperature ASV Voice Coil (Pair) - PL650CBL : Everything Else
Amazon.com: Alpine X-W10D4 Car Audio Type X Dual 4 Ohm 1800 Watt 10" Subwoofers with Sub Install Kit Package : Electronics
Amazon.com: Pyle 4'' x 6'' Three Way Sound Speaker System - Pro Mid Range Triaxial Loud Audio 240 Watt per Pair w/ 4 Ohm Impedance and 3/4'' Piezo Tweeter for Car Component
Amazon.com: MTX 3512-04 12" 500 Watt SVC 4-ohm Car Audio Subwoofer+Amplifier+Amp Wire Kit : Electronics
Amazon.com: Rockford Fosgate R2D4-10 Prime 4-Ohm DVC 10” Subwoofer 250 Watts RMS / 500 Watts Max : Electronics
Amazon.com: Eminence Legend CA154 15" Bass Guitar Speaker, 300 Watts at 4 Ohms, Black : Musical Instruments
Amazon.com: DS18 SXE-4000.4D/RD Car Amplifier Stereo Full-Range Class D 4-Channel 275x4 RMS @4 OHM 4000 Watts - Powerful and Compact Amp for Speakers in Car Audio System : Electronics
Amazon.com: Aexit 10W Watt Fixed Resistors 4 Ohm 5% Ceramic Cement Power Single Resistors Resistor x5pcs : Industrial & Scientific
Amazon.com: Rockville RSG15.4 15" 3-Way 1500 Watt 4-Ohm Passive DJ/Pro Audio PA Speaker : Musical Instruments
CQRobot Speaker 3 Watt 4 Ohm Compatible with Arduino Motherboard, 2.54mm Dupont Interface. It is Ideal for a Variety of Small Electronic Projects.
Amazon.com: Pyle Home Marine Car Amplifier - 4-Channel Compact 400 Watt RMS 4 OHM Full Range Monoblock Stereo & Waterproof - Wireless Bluetooth Receiver Audio Speaker w/ LCD Digital Screen (PFMRA450BW) : Electronics
Amazon.com: Taramps HD 3000 4 Ohms Class D Full Range Mono Amplifier : Electronics
Skar Audio FSX65-4 6.5" 300 Watt 4 Ohm Pro Audio Midrange Loudspeaker, Each
Genius GPRO-M1065 6.5" 300 Watts-Max Midrange Marathon Series Car Audio Speaker 4-Ohms : Amazon.com.au: Electronics
NVX VCW124v3 (VCW124 Version 3) 2400 Watt Peak (1200W RMS) 12" VC-Series v3 Dual 4-
