Upgrade your car audio system with a choice of 6-inch subwoofers in one convenient variation listing select the size that matches your setup and bass requirements the 6-inch option delivers 30W RMS 60W max and 300W PMPO output with 86 dB sensitivity airflow ventilation and a 4 Ohm design while the other 6-inch option is rated at 500W and features a polypropylene cone 20 oz Y30 magnet 4 Ohm impedance and a dual-layer ASV voice coil designed for cars trucks jeeps replacement applications and custom audio systems these woofer options provide flexible choices for bass-focused sound upgrades for different setups | 5 Core | | 6 Inch Subwoofer Pair 300W Car Audio Sub Woofer 4 Ohm Deep Bass Replacement Loud Speaker | Black | Best Buy