Technical Specifications:

BDC18D1SPL-V4
Type: Subwoofer
Size: 18” (457mm)
Peak/RMS: 15000W/5000W
Sensitivity: 89dB
Frequency Response: 15Hz-850Hz
Impedance: Dual 1Ω
Mounting Depth: 11.4” (290mm)
Mounting Diameter: 16” (427mm)
Enclosure Volume: 6-8 cuft³ 

Extreme Excursion: Designed for massive air movement and deep bass.
Premium Design: New basket and dust-cap for increased rigidity and aggressive aesthetics.
Best Power Handling: Triple stacked pole vented motor, 3″ high-temp 4-layer, and 4″ 8-layer aluminium long wound dual voice coils.
Premium Parts: Quad NOMEX spiders and ultra-wide foam surround for durability and minimal distortion.
Paper Composite Cone: Lightweight and strong for high efficiency in extreme SPL applications.
Dual Voice Coil: Flexible wiring for optimal amp matching.
Torsion Basket: Angular design supports the massive motor system and moving parts.
FEMM Motor: Advanced FEMM-designed motor for high force and performance gains.