Configuration: 2 ? 18" vented subwooferTransducers: 8 ohm, 18" woofer with a 4" voice coil, ceramic magnet assemblyFrequency Response (±3 dB): 31.4 Hz to 240 Hz (without processing)Frequency Range (-10 dB): 27.4 Hz to 1.2 kHz (without processing)Nominal Impedance: 4 ohmsContinuous Power Capacity: 1700 WRecommended Power: 3000 to 4000 WSensitivity (1 W at 1 m): 101.5 dBMaximum Output - Continuous / Peak (SPL at 1 m): 134.5 dB / 140.5 dBCabinet Type: Vented, rectangular enclosureEnclosure Material: Baltic birch plywood / 18 mmFinish: Black (GP218-sw-BK) or white (GP218-sw-WT) texture coatGrille: 14 gauge powder coated steelConnectors: Two NL4 in parallelPin Outs: Pins, 1+/1-Sub, 2+/2-NCAttachment Points: Sixteen (16) threaded M10 insertsWeight: 86.6 kg Net, 94.8 kg ShippingDimensions (HWD) inches: 20 x 47.17 x 30Dimensions (HWD) mm: 508 x 1198 x 762Accessories Available (optional): CP218-0 Wood caster pallet without cover, CP218-1 Wood caster pallet plus soft cover, CVR-GP218 Soft cover for one GP218-sw