Pyle PLPW6D 6In 600W Dual 4 Ohm Car Audio Stereo Speaker Subwoofer, Black - Walmart.com
GHXAMP 150MM 6 inch Pure Subwoofer Speaker Unit 4ohm 60W Deep Bass Speakers Home Theater Car Loudspeaker Rubber Edge 1pc - Price history & Review | AliExpress Seller - Ghxamp Auido Store | Alitools.io
6-1/2" Poly Cone Midbass Woofer 4 Ohm
DREADNAUT 6 - MMATS Pro Audio
Kicker 48CWRT674 CompRT Series shallow-mount 6-3/4" subwoofer with dual 4-ohm voice coils at Crutchfield