Amazon.com: DS18 CANDY-X4B Amplifier in Black - Class D, 4 Channels, 1600 Watts Max, Digital, 2/4 Ohm - Don't Sacrifice Space for Power - Compact Mini Ampflier for Speakers in Car Audio System : Electronics
Amazon.com: Fielect 4Pcs DIY Magnetic Speaker 3W 4Ohm Full Range Audio Speaker Stereo Woofer Loudspeaker Replacement for Arduino, 52mm Diameter : Electronics
Amazon.com: Power Acoustik 12" Woofer Dual 4 Ohm 2500W Max : Electronics
Amazon.com: Skar Audio EVL-8 D4 8" 1200 Watt Max Power Dual 4 Ohm Car Subwoofer : Electronics
Amazon.com: Gravity Audio 1200W Professional 12" Power Car Subwoofer 4 OHM IMPED Dual Voice Coil GR-12PW : Electronics
Amazon.com: AUDIOPIPEMAP Audiopipe 15" Woofer 1800W Max 4 Ohm DVC : Electronics
Amazon.com: SAVARD Speakers HiQ Series 6.5" inch Dual 4 Ohm Subwoofer : Electronics
Amazon.com: Skar Audio VD-12 D4 12" 800W Max Power Dual 4 Ohm Shallow Mount Car Subwoofer : Electronics
Amazon.com: Dayton Audio ND105-4 4" Aluminum Cone Midbass Neo Driver 4 Ohm : Electronics
Amazon.com: Facmogu 2PCS 8in Full Range Audio Speakers, RMS 50W Peak 120W, 4 Ohm Car Vehicle Audio Full Range Drivers, Wide Range DIY Loudspeaker Woofer Replacement - Red : Electronics
Amazon.com: Kicker VCWC124 CompC 12" Subwoofer in Vented Enclosure 4-Ohm : Electronics
Amazon.com: 2 Pack 6.5" Dual 4 Ohm Subwoofer High Powered 600W Max Power DVC American Bass : Electronics
Amazon.com: 6.5 Inch Car Woofer Speaker - 300 Watt High Powered White Injected Polypropylene Cone Car Audio Sound Component Speaker System w/ High-Temperature Kapton Voice Coil, 4 Ohm, 40oz Magnet - Pyramid
Amazon.com: Rockford Fosgate P3D4-12 Punch P3 DVC 4-Ohm 12-Inch 600-Watt RMS 1200-Watt Peak Subwoofer : Electronics
Amazon.com: Skar Audio EVL-65 D4 6.5" 400 Watt Max Power Dual 4 Ohm Car Subwoofer : Electronics
Amazon.com: Lanzar 10in Car Subwoofer Speaker Non-Pressed Paper Cone, Stamped Plastic Basket, Dual 4 Ohm Impedance for Vehicle Audio Stereo Sound System MAXP104D : Everything Else
NVX VCW124v3 (VCW124 Version 3) 2400 Watt Peak (1200W RMS) 12" VC-Series v3 Dual 4-Ohm Car Subwoofer…
5pcs 4 ohm 4RΩJ 10 watt Axial Ceramic Cement Power Resistor 10W: Amazon.com: Industrial & Scientific
Amazon.com: Taramps HD 3000 4 Ohms Class D Full Range Mono Amplifier : Electronics
Amazon.com: PRV AUDIO 8 Inch Midbass Speaker 8MB450-4 v2, 450 Watts Program Power, 2 in Voice Coil, 4 Ohm, 225 Watts RMS Pro Audio Mid Bass Woofer (Single) : Electronics
Amazon.com: Dayton Audio DCS165-4 6-1/2" Classic Subwoofer 4 Ohm : Electronics
Amazon.com: Massive Audio GTX154 – 15 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 15" Subwoofer 700 Watt RMS, 1400w MAX Dual 4 Ohm, 2.5 Inch Voice Coil. Sold Individually : Electronics
Amazon.com: BOSS Audio Systems MC900B Amplifier for ATV UTV Car Marine - 500 High Output, 4 Channel, 2/4 Ohm, Bluetooth Multi-Function Remote, RCA Out, Weatherproof, Use Amp with Stereo and Subwoofer, Crossover : Electronics
Amazon.com: MakerHawk 2PCS 4 Ohm 3 Watt Speaker for A rduino Single Cavity Mini Speaker Full-Range Cavity Mobile Portable Advertising Machine Speaker with 11mm Line Length JST-PH2.0mm-2 pin Terminal : Electronics
Dayton Audio DAEX32EP-4 Thruster 32mm Exciter 40W 4 Ohm
Amazon.com: (2) Skar Audio FSX8-4 350-Watt 8-Inch 4 Ohm MID-Range Loudspeakers - 2 Speakers : Electronics
Amazon.com: Rockford Fosgate R2D4-10 Prime 4-Ohm DVC 10” Subwoofer 250 Watts RMS / 500 Watts Max : Electronics
