SPL15D1 - 15-inch Dual 1-ohm SPL Subwoofer

The SPL15D1 is built specifically for high-output competition applications, delivering 2500W RMS and 5000W peak through a dual 1-ohm configuration that pairs directly with high-current amplifiers. A three-layer carbon fiber cone and 3-inch voice coil give this driver the rigidity and thermal capacity to hold up under sustained SPL punishment.

• 3-Layer Carbon Fiber Cone: Lightweight and stiff construction minimizes flex and maintains accuracy at high excursion levels.
• Dual 3.0-Inch Voice Coil: 76.5mm winding with 1+1Ω impedance offers flexible wiring options for competition and high-power street builds.
• 2500W RMS / 5000W Peak Power Handling: Rated for continuous high-power use, not just short bursts.
• 418 oz. Magnet: Oversized motor structure for strong linear control and maximum output efficiency.
• 2-Inch WideRidge Surround: Extended surround design supports greater cone travel without surround rollover or breakup.

Specifications

• Nominal Impedance: Dual 1Ω
• RMS Power Handling: 2500 Watts
• MAX Power Handling: 5000 Watts
• Frequency Response: 31–250 Hz
• Voice Coil Diameter: 3" (76.5mm)
• Voice Coil Material: ASV
• Cone Material: Carbon Fiber
• Frame: Aluminum
• Magnet: Ferrite
• Magnet Weight: 418 oz
• Xmax: 25mm

Thiele/Small Parameters

• Revc: 0.5 Ω
• Sensitivity: 88 dB
• Fs: 29.5 Hz
• Qts: 0.29
• Qes: 0.34
• Qms: 1.68
• Vas: 57.2 L (2.01 ft³)
• η0 (Efficiency): 0.41%
• Cms: 0.080 mm/N
• BL: 10 T·m
• Mms: 363 g
• Sd: 707 cm²

Dimensions

• Overall Depth: 14.23" (361.5mm)
• Mounting Depth: 11.72" (297.6mm)
• Overall Diameter: 15.75" (400mm)
• Cutout Diameter: 13.86" (352mm)