STX-12SD4

Powerful Deep Bass in a Shallow Design

The STX Audio STX12SD4 12-Inch Shallow Mount Subwoofer is engineered to deliver powerful, deep bass while fitting into compact installation spaces. With an impressive 2000 watts max power and 1000 watts RMS handling, this subwoofer produces hard-hitting low frequencies that bring music to life with clarity and impact. Its shallow-mount construction makes it the ideal solution for vehicles where installation space is limited, including trucks, under-seat applications, and compact custom enclosures.

Built with dual 4-ohm voice coils, the STX12SD4 provides flexible wiring configurations for improved amplifier compatibility and optimized system performance. The rugged die-cast aluminum basket minimizes vibration and enhances durability, ensuring reliable operation under demanding audio conditions. Whether upgrading a factory system or building a high-output custom setup, this subwoofer delivers strong bass without requiring excessive enclosure depth.

Compact Subwoofer for High-Performance Audio Systems

Designed for modern car audio installations, the STX Audio STX12SD4 combines compact fitment with extreme low-frequency performance. Its ultra-slim 3.51-inch mounting depth allows installation in tight spaces while maintaining the power and output expected from a full-size 12-inch subwoofer.

With a frequency response range of 20Hz–500Hz, the STX12SD4 delivers deep, controlled bass with excellent low-end extension for a more immersive listening experience. The dual 4-ohm configuration offers multiple impedance wiring options to match a wide range of amplifiers and maximize output. Engineered with a heavy-duty die-cast aluminum frame, this subwoofer is built for long-lasting durability and consistent sound quality during daily use and high-volume playback.

Deep, Clean Bass Without Sacrificing Space

Upgrade your car audio system with the STX Audio STX12SD4 shallow subwoofer, designed to provide powerful bass performance in compact installations. Rated at 2000 watts maximum power and 1000 watts RMS, this 12-inch subwoofer delivers rich, impactful low frequencies ideal for bass-heavy music and high-performance audio systems.

The shallow design allows the STX12SD4 to fit into low-profile enclosures and under-seat installations where traditional subwoofers may not fit. Its durable die-cast aluminum basket helps reduce unwanted resonance while improving structural strength and sound accuracy. With flexible dual 4-ohm wiring capability and exceptional bass response, this subwoofer is an excellent choice for enthusiasts seeking strong output without sacrificing valuable space.

Highlights

• 12-inch shallow mount car subwoofer
• 2000 watts maximum power handling
• 1000 watts RMS power handling
• Dual 4-ohm voice coil configuration
• Ultra-shallow 3.51-inch mounting depth
• Ideal for compact and tight installations
• Deep and hard-hitting bass performance
• Frequency response range of 20Hz–500Hz
• Durable die-cast aluminum basket
• Reduced vibration for cleaner sound output
• Flexible amplifier wiring options
• Fits most standard 12-inch enclosures
• Excellent for trucks and under-seat setups
• Designed for high-output car audio systems
• Clean and controlled low-frequency response
• Built for long-lasting performance and reliability

Package Includes

• 1 x STX Audio STX12SD4 12” Shallow Mount Subwoofer
• User/installation information sheet (if included by manufacturer)