CF1840JD/8

<div data-index="1"> <div >PA subwoofer, 1,200 W, 8 Ω</div> <div ><ul><li>Two demodulation rings </li><li>Optimised double suspension </li><li>Balanced ventilation for enhanced cooling </li><li>8 Ω version, also available as 4 Ω version (CF1840JD/4)</li></ul></div> </div> <br /><br />Impedance (Z): 8 Ω<br />Transmission technology: cable<br />Frequency range: 30-2,500 Hz<br />Resonant frequency (fs): 37 Hz<br />Power rating (RMS): 1,200 W<br />Peak music power output (MAX): 2,400 W<br />SPL: 97 dB/W/m<br />Suspension compl. (Cms): 0.09 mm/N<br />Moving mass (Mms): 217.40 g<br />Mech. Q factor (Qms): 4.372<br />Electr. Q factor (Qes): 0.437<br />Total Q factor (Qts): 0.397<br />Equivalent volume (Vas): 155 l<br />DC resistance (Re): 5.29 Ω<br />Force factor (BxL): 24.76 Tm<br />Voice coil induct. (Le): 1.16 mH<br />Voice coil diameter: Ø 100 mm<br />Voice coil winding height: 30 mm<br />Voice coil material: copper wire<br />Voice coil former: glass fibre<br />Linear excursion (X_MAX): ± 12.5 mm<br />Eff. cone area (Sd): 1,134.12 cm2<br />Magnet weight: 3.18 kg<br />Mounting cutout: Ø 414 mm<br />Mounting depth: 220 mm<br />Mounting hole diameter: Ø 441-432 mm<br />Dimensions: Ø 460 mm x 220 mm<br />Outside diameter: Ø 460 mm<br />Width: Ø 460 mm<br />Depth: 220 mm<br />Colour: black<br />Admiss. ambient temp.: 0-40 °C<br />Weight: 11.6 kg<br />Packing unit: 1<br />Type of speaker: 18"<br />Packing dimensions (W x H x L): 0.5 x 0.24 x 0.5 m<br />Gross weight: 12.5 kg<br />Net weight: 11.6 kg