DC Audio XL SPL 15" Subwoofer

The DC Audio XL SPL 15" Subwoofer is a hand-built USA-made 15-inch driver from the XL SPL line (M4 SPL), engineered for extreme SPL in high-power car audio systems. It’s available in 10, 12, 15, and 18-inch sizes and handles up to 2200W RMS (4400W peak) with a 7–14 day build time.

• Power Handling (RMS/Peak): 2200W RMS / 4400W peak — supports high-output bass performance when paired with a suitable amplifier and enclosure.
• 8-Layer Flat-Wound Hi-Temp Aluminum Voice Coil: 3.0" VC diameter for improved heat dissipation and sustained high-power operation under heavy bass duty.
• Extremely rigid cone & Multilayered foam surround: Non-pressed paper cone and multilayer polymer surround minimize cone flex for controlled excursion and better linearity.
• Cast Aluminum Frame & Hardware: Black cast aluminum frame with rubber mounting gasket, rubber motor boot, and chrome spring-loaded push terminals for durability and reliable installs.
• FEA-Analyzed Motor Assembly: Fully CNC-machined motor assembly optimized via finite element analysis to deliver consistent magnetic performance under load.
• Impedance Options: Dual ohm options (.7/1/1.4/2/4) to match a wide range of amplifiers and wiring configurations.
• 15" Mechanical & Electrical Specs: Mounting Depth 10.25"; Mounting Hole Diameter 14"; Outside Diameter 15.7"; VC Diameter 3.0"; Displacement 0.23 ft³; Sd 791 cm; Vas 66.02 L; Xmax 26 mm; Re 3.98 Ω; Le 3.5 mH; Qts 0.65; Ref SPL @ 1W 87.3 dB.
• Enclosure Recommendations: Sealed box 2.0 ft³; Ported box 3.0 ft³ for the 15" version.

In a real car build, this driver excels in SPL-focused setups where a large, well-tuned enclosure and high-current amplification are available. The combination of sizable Sd and Vas, high Xmax, and robust construction makes it a strong choice for competition-grade bass where accuracy and output are both valued.