Sundown Audio M 18" D1 Subwoofer | 2000W RMS | 4000W Peak

Sundown Audio M 18" D1 Subwoofer | 2000W RMS | 4000W Peak

Bring extreme bass and precision performance to your system with the Sundown Audio M 18" D1 Subwoofer, delivering a massive 2000W RMS and 4000W Peak Power Handling. Engineered for serious bassheads, the M Series is known for its deep low-end response, high-power durability, and top-tier build quality. This subwoofer is available in Dual 1 Ohm and Dual 2 Ohm configurations to match a wide range of amplifier setups.

Premium Design, Built for Power

At the heart of the M 18" is a quad stack magnet structure that ensures unmatched motor force and control. The Mega Roll surround and custom frame support extreme excursion, giving you an impressive 35mm of Xmax for massive output. The etched all-black backplate not only enhances cooling but adds a stealthy, aggressive look.

T/S Parameters M18D1

• RE (Ohms): 2.12

• Fs (Hz): 26.15

• VAS (L): 112.18

• Qes: 0.782

• Qms: 5.452

• Qts: 0.684

• Le (mH): 1.797

• BL (NA): 17.04

• Mms (Grams): 651.24

• Cms (uM/N): 56.86

• Sensitivity (dB @ 1w/1m): 85.84

Enclosure Recommendations

• Sealed: Not recommended

• Ported Enclosure: 7.0 cu ft

• Tuning Frequency: 32 Hz

• Port Area: 112 sq in

• 4th Order Bandpass (Sealed): 3.0 cu ft

• 4th Order Bandpass (Ported): 9.0 cu ft

• 4th Order Port Area: 180 sq in

• 4th Order Port Length: 8"

Physical Dimensions

• Mounting Depth: 14.05″

• Outside Diameter: 18.46″

• Cut-Out Diameter: 16.68″

• Displacement: 0.25 cu ft

Whether you're building a competition-grade system or just want window-shattering bass, the Sundown Audio M 18" Subwoofer delivers relentless performance and reliable power handling. Upgrade your sound with one of the most respected names in high-performance car audio—Sundown Audio.