Description :
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.
Technical Parameters
Driver Size 3.5 in –
DC Resistance 3.18 Ω ±5.0%
Resonant Frequency 72.57 Hz 15%
Half Space Sensitivity @ 2.83V 85.98 dB ±1.01
Sensitivity @ 1W/1m 83.3 dB ±1.01
Rated Noise Power (IEC 268-5 18.1) 30 W –
Test Spectrum Bandwidth Fs-2.5KHZ 12 dB/Oct –
Effective Piston Area 30.8 cm2 –
Moving Mass 4.7 g –
Motor Force Factor 4.31 T•m –
Voice Coil Inner Diameter 25.73 mm –
Gap Height 6 mm –
Maximum Linear Excursion 4.5 mm –
Ferrofluid Type –
Minimum Impedance 4.37 Ω ±7.5%
Voice Coil Inductance 0.16 mH –
Mechanical Q Factor 5.38 –
Electrical Q Factor 0.37 –
Total Q Factor 0.35 –
Ratio 210.34 fs/Qts –
Energy Bandwidth Product ((1/Qes)•fs) –
Suspension Compliance 1017.5 μm/N –
Effective Cone Diameter 6.26 cm –
Motor Efficiency Factor 5.9 (T•m2)/Ω –
Voice Coil Former Material KSV –
Driver Mass 0.88 Kg –
Equivalent Volume 1.39 L –
