Modular subwoofer for simpler and easier repairs. Now repairs can be done in a matter of minutes. The subwoofer has an honest RMS – 1200 watts, as well as even better efficiency than previous models.Voice coil – 2.8″ round copper   General feature Power Handling (RMS) 1200 W VC diameter / material 2.8" round copper VC wire insulation Polyimide Frame material Steel Magnet size and q-ty 170*26mm x 2 pcs / 6.69*1.02" x 2 pc Spider diameter and q-ty 193mm x 4 pcs / 7.6" x 4 pcs Cone material Paper with glass fiber Dust cap material Hi-temp ABS Parameters DC Resistance (Re) 0.4 Ω Free Air Resonance (Fs) Hz 32.6 Moving Mass (Mms) g 249 BL Tm 6.2 Total Speaker “Q” (Qts) 0.49 Electrical Q (Qes) 0.54 Mechanical Q (Qms) 5.1 Equivalent Compliance (Vas) L 16.1 One-Way Linear Excursion (Xmax) (BL 50%) mm 19 Sensitivity (1 W / 1 m) dB 83.5 Effective Piston Area (Sd) cm² 337 Physical Specifications Overall Diameter 275mm / 10.83" Mounting Hole Diameter 242mm / 9.53" Mounting Depth 157mm / 6.18" Driver Displacement 2 l / 0.53 Gal Net Weight 10 kg / 22.05 lbs