Dayton Audio PSS545HE-4 Vortex 21" Professional Subwoofer with 5" Voice Coil 4 Ohm
Pioneer 12" 1400 W Max Power, Single 4-ohm Voice Coil, IMPP™ cone, Rubber Surround Component Subwoofer BLUE TS-A123R - Best Buy
SUNDOWN AUDIO SA 10 (CLASSIC) 10" D4 Subwoofer | 750W RMS - 4 OHM
8W1v3-4 - Car Audio - Subwoofer Drivers - W1v3 - JL Audio
JL Audio 6W3v3-4 W3v3 Series 6.5" 4-ohm subwoofer at Crutchfield
Fiberglass Subwoofer Speaker Unit | Subwoofer 3 4 Inch Speakers - 4 Inch Subwoofer - Aliexpress
MMA124- 12" 500 Watts RMS Dual 4 Ohm Subwoofer
6W3v3-4 - Car Audio - Subwoofer Drivers - W3v3 - JL Audio
Amazon.com: NVX SMW10D4 700W Peak (350W RMS) S-Series Shallow-Mount 10" Dual 4-Ohm Subwoofer : Electronics
Ghxamp 4 Inch 40w Round Subwoofer Speaker Woofer High Power Bass Home Theater 2.1 Subwoofer Unit Crossover Louspeakers Diy 1pc - Speakers - AliExpress
RW1-254 Reference 10 Inch 4 Ohm DVC Subwoofer | MB Quart
JL Audio 12W0v3-4 W0v3 Series 12" 4-ohm subwoofer at Crutchfield
STLF-1504-8 | 15" 450W Raw Subwoofer Replacement w/ 4" Voice Coil, 8-ohm – Sound Town
Sundown Audio SA Classic 12" inch DVC Dual 4 Ohm (SA Series) Car Subwoofer 750 Watts
SUNDOWN AUDIO SML 10" Shallow Subwoofer D4 | 500W RMS - 4 OHM - Down4Sound Shop
VCW104v3 1600W Peak (800W RMS) 10" VC-Series v3 Dual 4-Ohm Subwoofer — NVX
VSW104v2 1000W Peak (500W RMS) 10" VS-Series v2 Dual 4-Ohm Subwoofer — NVX
Amazon.com: 4-inch subwoofer, subwoofer, Four-inch subwoofer, subwoofer, high Power : Electronics
Amazon.com: Audiopipe TXX-BDC4-12D2 Subwoofer Quad Stack 12-inch 1100 Watts RMS 2200 Watt Max Impedance Dual 2 Ohm DVC Vehicle Car Audio Subwoofer Speaker System Voice Coil 3" BASV 4-Layer : Electronics
KICKER CompC Loaded Enclosures Single-Voice-Coil 4-Ohm Subwoofer Black Carpet 44TCWC104 - Best Buy
Pyle 8 Inch 1600W DVC 4 Ohm Car Audio Subwoofer Speaker Set, Black (2 Pack) - Walmart.com
KRK SYSTEMS - S8.4 Powered Studio Subwoofer
KRK S10.4 10 inch Powered Studio Subwoofer | Sweetwater
10WØv3-4 - Car Audio - Subwoofer Drivers - WØv3 - JL Audio
