Amazon.com: Skar Audio FSX10-4 10" 300 Watt 4 Ohm Pro Audio Midrange Loudspeaker, Each : Everything Else
Amazon.com: PRV AUDIO 6.5 Inch Midrange Speaker 6MR500-NDY-4, 500 Watts Max Power, 4 Ohm, 2 in Voice Coil, 250 Watts RMS, Neodymium Magnet, Smooth Full Range Response Through 13kHz for Car Audio
Amazon.com: Pyle Car Three-Way Speaker System - Pro 4 x 6 Inch 180W 4 Ohm Mid Tweeter Component Audio Sound Speakers For Car Stereo w/ 30 Oz Magnet Structure, 2” Mount Depth
Amazon.com: Fielect 2Pcs DIY Magnetic Speaker 3W 4 Ohm Full Range Audio Speaker Stereo Woofer Loudspeaker Replacement for Arduino, 52mm Diameter : 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 : Electronics
Amazon.com: Cylewet 2Pcs 2inch 4Ohm 10W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino (Pack of 2) CYT1116 : 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: Gikfun 4Ohm 40mm Diameter 3W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino (Pack of 2pcs) EK1794 : Electronics
Amazon.com: Audiopipe 6" Woofer 150W Max 4 Ohm DVC Sold Each : Electronics
Amazon.com: Rockville (2) RXM64 6.5" 300w 4 Ohm Mid-Range Drivers Car Speakers Mid-Bass : 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
Amazon.com: DS18 SLC12S Car Subwoofer Audio Speaker - 12" in. Paper Glass Fiber Cone, Black Steel Basket, Single Voice Coil 4 Ohm Impedance, 500W MAX Power and Foam Surround for Vehicle Stereo
Amazon.com: (2) Skar Audio FSX8-4 350-Watt 8-Inch 4 Ohm MID-Range Loudspeakers - 2 Speakers : Electronics
Amazon.com: Mini Hobby Speaker - 2 inch 4 Ohms : Electronics
Amazon.com: Dayton Audio ND105-4 4" Aluminum Cone Midbass Neo Driver 4 Ohm : Electronics
Amazon.com: Fielect 4Pcs 5W 4 Ohm DIY Magnetic Speaker Audio Speakers 77mm Diameter Round Shape Replacement Loudspeaker : Electronics
Amazon.com: Facmogu 2PCS 5in Full Range Speaker Drivers, RMS 30W MAX 50W 4 Ohm, HiFi Wide Range Audio Driver Loudspeaker Replacements, DIY Car Vehicle Audio Speakers Bass Woofer Tweeters - Red : Electronics
Amazon.com: Visaton FRS7-4 2.5" Full-Range Speaker 4 Ohm : Electronics
Amazon.com: uxcell 3W 4 Ohm Metal Housing Round Magnet Speaker Loudspeaker 2Pcs : Electronics
Amazon.com: Harmony Audio HA-R104 Car Stereo Rhythm Series 10" Sub 500W Single 4 Ohm Subwoofer : Electronics
Amazon.com: GRS 3FR-4 Full Range 3" Speaker Driver 4 Ohm : Electronics
Amazon.com: Visaton FR10WP-4 Outdoor 4" Full-Range Speaker 4 Ohm Black : Electronics
Pioneer TSW312D4 Champion Series 12" 1500 Watt Dual 4 Ohm Voice Coil DVC Car Subwoofer : Electronics - Amazon.com
Amazon.com: Planet Audio AC12D Car Subwoofer - 1800 Watts Maximum Power, 12 Inch, Dual 4 Ohm Voice Coil, Sold Individually : Electronics
Amazon.com: KICKER 46CSC44 CS-Series CSC4 4-Inch (100mm) Coaxial Speakers, 4 -Ohm (Pair) : Electronics
Amazon.com: Dayton Audio DAEX32U-4 Ultra 32mm Exciter 20W 4 Ohm : Electronics
