Transducer Size (Millimeters)304.8
DC Resistance3.57
Resonant Frequency20.3
Half Space Sensitivity87.4
Rated Noise Power300
Test Spectrum Bandwidth20Hz - 1kHz

Transducer Size (Millimeters)304.8
DC Resistance3.57 Ω±5.0%
Resonant Frequency20.3 Hz15%
Half Space Sensitivity @ 2.83V87.4 dB±1.01
Sensitivity @ 1W/1m85.6 dB±1.01
Rated Noise Power (IEC 268-5 18.1)300 W
Test Spectrum Bandwidth20Hz - 1kHz 12 dB/Oc
Effective Piston Area483.1 cm2
Moving Mass193.9 g
Motor Force Factor18.53 T•m
Voice Coil Inner Diameter51.32 mm
Gap Height8 mm
Maximum Linear Excursion12.5 mm
Ferrofluid Type
Minimum Impedance5.25 Ω±7.5%
Voice Coil Inductance0.7 mH
Mechanical Q Factor4.44
Electrical Q Factor0.26
Total Q Factor0.24
Ratio83.54 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance316.9 μm/N
Effective Cone Diameter24.8 cm
Motor Efficiency Factor96.2 (T•m2)/Ω
Voice Coil Former MaterialASV
Transducer Mass6.08 Kg
Equivalent Volume103.86 L

This 12 inch 4 ohm member of the XLS product family has all the design features suitable for a high performance subwoofer driver. The motor features a double ferrite magnet motor, supporting high excursion, and aluminium shorting rings and pole extenders, lowering and linearizing the inductance of the overhung voice coil. The paper cone is vented under the dust cap, to reduce air compression. The suspension system features a low-creep rubber surround, and a nomex spider, ensuring long-term reliability under high power conditions. The product also features a rigid cast aluminium basket.