Ground Zero GZNW 30SPL-D2

<p>Best of both worlds! GZNW subwoofers are built to play LOUD and to play nice. You can have tremendous amount of sound pressure and still enjoyable sound. If you have amplifier that is big enough to feed these monsters of course.</p>Technical Data: Diameter30 cm / 12″Power Handling (RMS/SPL.)3000 / 6000 WattsImpedance2x 2 OhmsEfficiency86.3 dBPower Recommendation2000 – 6000 WattsVoice Coil75 mm / 3″ CCAMembran LayoutReinforced paperMax. Excursion (Xmax)70 mm / 2.76″Mounting Ø281 mm / 11.06″Mounting Depth237 mm / 9.33″Resonance Frequency (Fs)41.3 HzOverall Qaulity (Qts)0.54Equiv. Air Volume (Vas)25 L / 0.88 cu.ft..Model specification: NUCLEAR