18 Sound 21NTLW5000-4 21" Neo Magnet 4000 Watt 4 Ohm Subwoofer

Marsoni

M251S

$539.40

Get it in 3 business days with 1 day shipping. Friday, May 29

18 Sound 21NTLW5000-4 21" Neo Magnet 4000 Watt 4 Ohm SubwooferOverview The 18 Sound 21NTLW5000 4 is a high performance 21 inch subwoofer, delivering a remarkable audio experience. This subwoofer has an average sensitivity of 96. 5 dB SPL at 1W 1m, ensuring powerful sound output. It features dual 115mm Tetracoil Aluminum Voice coils, providing exceptional handling of 4000 W program power. The ultra linear suspension behavior guarantees excellent sound clarity, while its symmetric flux density and inductance

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I have been very pleased with how well this cover is holding up. It fits snugly into the receiver hole and stays put. Makes the back of the car look so much better and keeps dirt out of the receiver. Good Job! PLUS: I don't have to store the plug in the back of the car any longer! Hinged piece is still nice and flexible.

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Reviewed in the United States on September 12, 2025

Verified Purchase

Talquin

Fort Morgan, US

★★★★★ 5

Well constructed! Tight Fit.

Color: Black, Size: 1

Great construction, very durable. A bit tight to install, but that is not necessarily a bad thing. It will certainly keep it from ever falling off.

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Reviewed in the United States on April 3, 2026