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STX Audio STX12SD4-12-Inch Shallow Subwoofer, 2000W Max Power, 1000W RMS, Dual 4 Ohm - Ideal for Compact Installations

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Features

  • EXTREME BASS POWER - Experience booming sound with a massive 2000W max power and 1000W RMS that brings deep, hard-hitting bass to your car audio system, enhancing every beat of your favorite tracks.
  • SHALLOW MOUNT DESIGN - With a slim 3.51-inch mounting depth, this subwoofer fits seamlessly under seats and in tight enclosures, providing you with powerful audio performance without sacrificing space.
  • DUAL 4 OHM CONFIGURATION - Enjoy flexible wiring options with dual 4-ohm voice coils, allowing for optimized impedance matching that enhances compatibility with a wide range of amplifiers for maximum output.
  • PRECISION 12" FITMENT - Designed for versatility, the STX12SD4 features an 11.26-inch cutout and a total diameter of 12.80 inches, ensuring it fits most standard 12-inch subwoofer enclosures effortlessly.
  • HEAVY-DUTY BUILD - Constructed with a robust die-cast aluminum basket, this subwoofer minimizes vibration and maximizes durability, ensuring long-lasting performance for all your audio adventures.
  • DEEP LOW-FREQUENCY RESPONSE - Covering a range of 20Hz500Hz, this subwoofer delivers powerful, clean bass with exceptional low-end extension, making it perfect for bass enthusiasts craving impactful sound.

Description

The STX Audio STX12SD4 is a high-performance 12-inch shallow subwoofer engineered for those seeking powerful bass in space-challenged environments. This subwoofer is perfect for trucks, compact cars, and custom audio setups, offering exceptional low-frequency performance without the bulk of traditional subwoofers. With a shallow mounting depth of just 3.51 inches, it fits seamlessly under seats or in limited enclosure spaces, while its standard 12-inch fitment ensures compatibility with most enclosures. The STX12SD4 is designed with dual 4-ohm voice coils, allowing for flexible wiring configurations, making it easy to achieve optimal impedance matching with various amplifiers. Its durable construction, featuring a die-cast aluminum basket, ensures reduced vibration and long-lasting performance, making it a reliable choice for any car audio enthusiast. Experience deep, clean bass with a frequency response range of 20Hz–500Hz, making this subwoofer an ideal choice for those who crave a rich audio experience.

Brand: STX Audio


Speaker Maximum Output Power: 2000 watts


Frequency Response: 500 hertz


Mounting Type: Flush Mount


Model Name: STX12SD4


Mounting Type: Flush Mount


Speaker Type: Subwoofer


Antenna Location: For Music Players


Speaker Size: 12 inches


Woofer Diameter: 12 inches


Speaker Maximum Output Power: 2000 watts


Frequency Response: 500 hertz


Unit Count: 1 Count


Audio Driver Type: Dynamic Driver


Audio Driver Size: 12 inches


Brand: STX Audio


Model Number: STX12SD4


Model Name: STX12SD4


Number of Items: 1


UPC: 783501193999


Manufacturer: STX Audio


Wireless Technology: No Wireless Communication Technology


Frequently asked questions

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Top Amazon Reviews


  • nicely done!
first of all, with car audio i’m ocd picky.. i bought my pickup new in 2020. had a slim soundstorm stealth box with amp professionally installed, right after buying the truck. it was laughable, i barely even noticed any difference. i then went to i single shallow kicker L7 with a skar 800.1, much better,but blew it in less than a year. stillwater(kicker)sent a free replacement, lasted about 3 months. then stillwater refunded my money from well over a year ago. i put in a custom 2 12 inch skar box, with same 800.1 skar amp. way better, but i blew one sub and amp in about a year. i went with shallow orions , same box , audiozoner amp(great amp by the way), sounded way better, damaged one sub bad after a year. i ordered same sub, it sounded off from the start,lasted 3 weeks. i started looking into JL audio. a company called NVX basically sells JL clones for 300 each, instead of 600 each. i kept digging, found these stx 12s, which are same build as the NVX and JL, $169 each. shipping took a few days longer, box was damaged. otherwise, great design. they even have grills and specific hardware for a very tight install. i did have to shave about 1/8 all the way around by box cutout. and yes, im baby ing these. but they already sound better quality than any of the others. this time i added a 3 year warranty from amazon. they are already close in sound to the orions, just better quality sound. i imagine if broken in properly, these are the ones. 1000 watt RMS amp is dynoed at 1000 watts. all other subs were around 500 watts rms(yes i had gain only 1/2 when i blew the others) i’m so far impressed with the factory packaging, build and sound quality. i can’t wait to really crank these up after break in. ... show more
Reviewed in the United States on August 21, 2026 by g light

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