Wharfedale Delta 218b Double 18" Passive Sub Single

The Delta 218B uses two high output, low distortion 18 cast frame woofers with 3 voice coils.Comprehensive array inserts are marked on the top panel for arrayed applications. Delta 218B is ideal when used in arrays and is equally at home in a wide variety of fixed installation and touring applications. Rhino Rock™, our new texturised composite finish is used in all models. This new finish provides the great look of a painted finish with the durability of a carpet covered enclosure giving you the best of both worlds. The Delta 218B is constructed from plywood.  SPECIFICATIONS MODEL DELTA 218B Max SPL (Calculated)   dB SPL @ Peak Rated Power 138dB LF Size 470mm / 18 LF Power (Continuous RMS) 800w LF Sensitivity (Free Field 1W @ 1M) 99dB LF Voice Coil 101.6mm / 4 LF Cone Material Paper LF Voice Coil Material Copper LF Voice Coil Former Material Fibre Glass LF Basket Material Aluminium LF Basket Type Die-Cast LF Magnet Structure Mass 2.69Kg / 5.918lbs LF Magnet Structure Material Ferrite Enclosure Material & Thickness 18mm Plywood Enclosure Finish RHINO ROCK Grille Material & Finish 1.5mm Steel Colour Black Handles 4 On Sides Input Connector Type 2x Speakon HPF Output Connector Type N/A Net Weight 78.9Kg/ 173.9lbs Gross Weight 86.0Kg/ 189.6lbs Dimensions (Unpacked)   H 541mm / 21.3 W FRONT/REAR 1041mm / 41 D 650mm / 25.6 Dimensions (Packed)   H 626mm / 24.6 W FRONT/REAR 1126mm / 44.3 D 722mm / 28.4 CBM 0.51 General Parameters   System Type Dual Chamber Subwoofer Frequency Response (Bi-Amp) (+/- 3dB) 30-1.5KHz Sensitivity   dB (1W @ 1M) 100dB Parallel   Continuous 1600W Programme 3200W Peak 6400W Nominal Impedance (Ohms) 4Ω Discrete   Continuous 800W Programme 1600W Peak 3200W Nominal Impedance (Ohms) 8Ω x2