Transducer Size (Millimeters)88.9
DC Resistance3.18
Resonant Frequency72.57
Half Space Sensitivity85.98
Rated Noise Power30
Test Spectrum BandwidthFs-2.5KHZ

Transducer Size (Millimeters)88.9
DC Resistance3.18 Ω±5.0%
Resonant Frequency72.57 Hz15%
Half Space Sensitivity @ 2.83V85.98 dB±1.01
Sensitivity @ 1W/1m83.3 dB±1.01
Rated Noise Power (IEC 268-5 18.1)30 W
Test Spectrum BandwidthFs-2.5KHZ 12 dB/Oc
Effective Piston Area30.8 cm2
Moving Mass4.7 g
Motor Force Factor4.31 T•m
Voice Coil Inner Diameter25.73 mm
Gap Height6 mm
Maximum Linear Excursion4.5 mm
Ferrofluid Type
Minimum Impedance4.37 Ω±7.5%
Voice Coil Inductance0.16 mH
Mechanical Q Factor5.38
Electrical Q Factor0.37
Total Q Factor0.35
Ratio210.34 fs/Qts
Energy Bandwidth Product ((1/Qes)•fs)
Suspension Compliance1017.5 μm/N
Effective Cone Diameter6.26 cm
Motor Efficiency Factor5.9 (T•m2)/Ω
Voice Coil Former MaterialKSV
Transducer Mass0.88 Kg
Equivalent Volume1.39 L

The SLS line combines high quality performance with an affordable design. This 3.5 inch 4 ohm member of the SLS family features a rigid steel basket, a coated paper cone, and a ferrite magnet motor with aluminium shorting ring for improved distortion performance.