Sundown Audio M18 Car Subwoofer 18" Dual 2 Ohm, 2000W RMS/4000W Peak, 3" Aluminum VC, 35mm Xmax, Mega Roll Surround, Quad Magnet Motor, Low-Distortion SPL Sub

Sundown Audio M-Series M18D2 Subwoofer: High-Performance BassThe Sundown Audio M-Series M18D2 Subwoofer is an 18-inch subwoofer that redefines performance for its class. Designed for demanding car audio systems, the M-series delivers intense, high-fidelity bass with stellar low-frequency extension and low distortion. It combines advanced engineering with a unique aesthetic, featuring an Etched All Black Backplate and a special M-series magnet boot design. Extreme Power & Unmatched ExcursionThe M18 is built to dominate with robust, controlled
power delivery: Power
Handling: 2000 Watts RMS / 4000 Watts Peak power.
Excursion: Achieves a full 35mm one-way linear excursion (Xmax) for deep, clean bass reproduction.
Voice Coil: Features a custom-developed 3" diameter 4-Layer Round Wire Aluminum Voice Coil wound on a thick aluminum former for optimal winding density.
Impedance: Dual 2 Ohm. Revolutionary Motor and Patented DesignThe M18's strong performance is due to its custom-tooled components and engineering:
Frame: Utilizes custom-tooled and patented Mega series frames and the signature Mega-Roll surround.
Motor: Features a Quad Stack Magnet Structurea 200mm ( 7.87 ) motor with an 88mm ( 3.46 ) stack height and a 20mm thick top-plate for an incredibly efficient magnetic circuit.
Suspension: Features Sundown's proprietary fully computer-optimized PG linear suspension, designed for the lowest possible bass extension.
Low Distortion: An integrated magnet inner-diameter aluminum shorting ring ensures superior inductive distortion performance across the entire frequency range. Superior Thermal Management and SpecsThe M-series incorporates an advanced high-stroke coil ventilation system for reliability: Cooling mechanisms include a high-velocity pole vent and a proprietary high-velocity cast-aluminum frame-base venting system to actively manage coil temperature.
Dimensions: Outside Diameter of 18.46" and Cutout Diameter of 16.68".
Mounting Depth: Requires 14.05" of depth with only 0.25 cu. ft of displacement.
T/S Specs (M18D2): Features a low Fs ( 28.567 Hz) and an ideal Qts ( 0.65 ). Optimized Enclosure FlexibilityThe M-series is highly versatile for diverse acoustic goals:
Ported: Optimized for 7.0 cu ft net enclosures with a 32Hz tuning (112 sq in port area).
Advanced: Also suited for 4th Order Bandpass ( 3.0 cu ft Sealed Side / 9.0 cu ft Ported Side) and opens up the possibility for sealed and IB (Infinite Baffle) applications. The M-series also opens up the possibility for sealed and IB (Infinite Baffle) applications, offering unparalleled versatility for diverse installation needs and acoustic goals.