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The JBL MS-12SD4 is a 12-inch subwoofer engineered to deliver thundering, forceful bass for your vehicle's audio system. It boasts a robust power handling capability, ranging from 50 to 900 watts RMS and peaking at 1800 watts, ensuring it can be driven by a wide variety of amplifiers. Constructed with a durable polypropylene cone and a stitched tri-laminate fabric surround, this subwoofer is built for longevity and performance. The vented cast aluminum frame provides structural integrity and aids in heat dissipation, crucial for sustained high-output operation. With a frequency response from 30 Hz to 400 Hz and a sensitivity of 87.0 dB, the MS-12SD4 is designed to reproduce deep low frequencies effectively. The dual 4-ohm voice coil design offers flexibility in wiring configurations, allowing for various setup options depending on your amplifier's capabilities and desired impedance. The top-mount depth is 5-5/8 inches, which is a key consideration for enclosure design and installation planning.