DD Audio SL612 D4

The REDLINE SW Series subwoofers offer extreme bass and value. These Hi Def Tuned subwoofers work great in sealed and small vented enclosures, on low to moderate power levels. They’re equipped with all the performance features needed to handle the rigors of daily pounding, and they are available in two impedance options so they can be matched to any DD Audio amplifier.FeaturesHigh Temp 2” Voice CoilDVC 2 Ohm, DVC 4 OhmEROM SurroundVented Stamped Steel FrameVented BackplatePush Terminals Features: 12″ (30cm) subwoofer with EROM surround. High temperature 2.5″ voice coil Double layer spider system Three-layer flat diaphragm body 72oz magnet Coil gap ventilation at rear plate DD cast aluminum frame Speaker size (In): 12 Watts RMS: 300 - 600 Watt peak power: 1200 Impedance: D4 Voice coil (inch): 2.5 Data: Fs (Hz): 27 Qms: 7.906 Qes: 0.432 Qts: 0.409 Vas: 68.349 Xmech (MM): 40 Xmax (MM): 14.5 Dimensions: Frame outer diameter (cm): 31.9 Frame outer diameter with gasket(cm): 32.5 Mounting diameter(cm): 28.7 Mounting depth(cm): 10.5 Engine diameter(cm): 16,51 Motor depth(cm): 3.81 woofer displacement : 0.06 litre Shipping weight: 8 kg Enclosure Recommendation: Closed cabinet : 22.5-42 litres Bass reflex cabinet : 28-50 litres.