The IWS-10 subwoofer driver employs a rigid, flat 10” surface of 10mm (3/8”) RDT® material derived from Monitor audio’s acclaimed ‘Platinum’ series of high-end speakers. A large vented pole helps to move air quickly, reducing power compression and increasing heat dissipation. TECHNOLOGY Rigid Die-cast chassis/basket Large vented pole design to reduce power compression, lower distortion and improved power handling High-tech RDT flat ‘sandwich’ cone technology High-quality gold-plated ‘push’ type terminal – for easy installation 8-ohm impedance 50mm diameter voice coil with black anodized former –Improves convection cooling effects +/- 10mm of excursion – results in controlled bass at low frequencies and delivers high SPL Patented Tri-Grip fixing system Trim-less, low profile, paintable grille SPECIFICATION Frequency Response 28 Hz – 120 Hz(when mounted in optimum enclosure) Impedance (Nominal) 8 Ohms Sensitivity (1W@1M) 86 dB Maximum SPL (Partnered with IWA-250) Single unit 109.8 dB; Pair 115.8 dB Power Handling 150 W Cut-Out Hole Dimensions 280 x 280 mm(11 x 11 inches) Mounting Depth 89.98 mm(3 1/2 inches) Fixing Type 4 position Tri-Grip® dog leg fixings Connection Gold plated "push" type terminals Construction Materials Mineral-Filled ABS Plastic(RoHS2 Compliant) Overall Dimensions (H x W x D) 302 x 302 x 92.28 mm 117/8 x 117/8 x 35/8 Inches Overall Dimensions With Grille (H x W x D) 314.21 x 314.21 x 100.78 mm 123/8 x 123/8 x 315/16 inches