Transducer Size (Millimeters)133.35
DC Resistance3.3
Resonant Frequency57.7
Half Space Sensitivity86.18
Rated Noise Power50
Test Spectrum Bandwidth20Hz-10KHz

Transducer Size (Millimeters) 133.35
DC Resistance 3.3 Ω±5.0%
Resonant Frequency 57.7 Hz15%
Half Space Sensitivity @ 2.83V86.18 dB±1.01
Sensitivity @ 1W/1m83.6 dB±1.01
Rated Noise Power (IEC 268-5 18.1)50 W
Test Spectrum Bandwidth 20Hz-10KHz 12 dB/Oc
Effective Piston Area 86.6 cm2
Moving Mass 20.6 g
Motor Force Factor 7.39 T•m
Voice Coil Inner Diameter 25.73 mm
Gap Height 6 mm
Maximum Linear Excursion 5.2 mm
Ferrofluid Type
Minimum Impedance 4.45 Ω±7.5%
Voice Coil Inductance 1.22 mH
Mechanical Q Factor 3.89
Electrical Q Factor 0.45
Total Q Factor 0.41
Ratio 142.47 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance 369 μm/N
Effective Cone Diameter 10.5 cm
Motor Efficiency Factor 16.5 (T•m2)/Ω
Voice Coil Former Material ASV
Transducer Mass 0.96 Kg
Equivalent Volume 3.91 L

The SDS compact subwoofer family offers low resonant frequency performance, ideally suited for compact sealed enclosures. This 5.25 inch 4 ohm member of the SDS family offer a coated paper cone with rubber surround, a high power voice coil suspended in a ferrite magnet motor, and a narrow-profile steel basket shaped to fit into narrow cabinets.