Amazon.com: PRV AUDIO 10 Inch Woofer Speaker 10W1000-NDY-4, 1000 Watts Program Power, 4 Ohms, 3 in Voice Coil, 500 Watts RMS, Unique Sound Reproduction Midbass Woofer Driver for Pro Car Audio (Single) : Electronics
Amazon.com: Dayton Audio DCS165-4 6-1/2" Classic Subwoofer 4 Ohm : Electronics
Amazon.com: PRV AUDIO 8 Inch Shallow Midrange Buller Speaker 8MR400B-4 Slim, 4 Ohm, Shallow Mount Car Slim Speakers, 400 Watts Program Power 1.5 in Voice Coil, 200 Watts RMS, Compact for Doors (Single) : Electronics
Amazon.com: Design Engineering 050350 Boom Mat Speaker Baffles, 4" x 6" Oval (Pack of 2) : Electronics
Amazon.com: Bazooka BT1024DVC BT Series 10-Inch 4 Ohm Dual Passive Tube : Electronics
Amazon.com : Visaton FR 7-4 2-1/2" Full-Range Driver 4 Ohm : Electronics
Car Audio Dual 12" Slot Vented Paintable Baffle Stereo Sub Box Enclosure
Amazon.com: American Bass MX252T- 1 Inch Compression Tweeters 4Ohm 150W Max Sold in Pairs : Electronics
Amazon.com: Bazooka BT1024DVC BT Series 10-Inch 4 Ohm Dual Passive Tube : Electronics
Amazon.com: 2 x 12 Subwoofer 1200W 2" 4 Ohm DVC Pro Car Audio American Bass XO-1244 : Electronics
Amazon.com: DS18 SLC10S Car Subwoofer Audio Speaker - 10" in. Paper Glass Fiber Cone, Black Steel Basket, Single Voice Coil 4 Ohm Impedance, 440W MAX Power and Foam Surround for Vehicle Stereo
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: Dayton Audio ND105-4 4" Aluminum Cone Midbass Neo Driver 4 Ohm : Electronics
Rockford Fosgate M2D4-12I Color Optix 12" DVC 4-Ohm Infinite Baffle Multicolor LED Lighted Marine Subwoofer - White/Stainless
DS18 PRO-X6.4BM Loudspeaker - 6.5", Midrange, Red Aluminum Bullet, 500W Max, 250W RMS, 4 Ohms - Premium Quality Audio Door Speakers for Car or Truck Stereo Sound System (1 Speaker) : Amazon.sg: Electronics
Amazon.com: PRV AUDIO 6.5 Inch Shallow Midrange Bullet Speaker 6MR250B-4 Slim, 4 Ohm Shallow Mount Car Audio Slim Speaker, 250 Watts Program Power, 1.5 in Voice Coil 125 Watts RMS, Compact for Doors (Single) : Electronics
Amazon.com: DS18 MP4/WH White Marine Speaker - 4", 2-Way, 150W Max, 100% UV Stable, IPX5 Marine, 4 Ohms - for All Elements, UTV, ATV & Jeeps (2 Speakers) : Everything Else
Amazon.com: Pair Faital PRO 4FE35 4" Midrange Full-Range Woofer Speaker 4 ohms 60W 91dB : Electronics
Amazon.com: BLACK DIAMOND DIA-XT69 6 x 9 Inches Car Audio Mid-Range Loudspeaker with Built-in Bullet Tweeter 4-Ohm 550 Watts (1 Speaker) : Everything Else
PRV AUDIO 4 Inch Midrange Speaker 4MR60-4, 60 Watts Program Power, 4 Ohm, 30 Watts RMS Power Pro Audio Loudspeaker (Single)
Amazon.com: Rockford Fosgate M2D4-12IB Color Optix 12" DVC 4-Ohm Infinite Baffle Multicolor LED Lighted Marine Subwoofer - Black/Stainless : Automotive
