Lowther EX2 Drive Unit
EX  Drive Unit with new cone assembly.EX4 Drive Unit
DC Resistance of Voice Coil Re 7.4 ohms
Free Air Resonance Fo 45 Hz
Emission Piston Area Sd 0.021M²
Equivalent Volume Suspension Vas 62.775 Ltrs
Suspension Compliance Cms 1002 u M/N
Mass of Cone Mmd 11.0 g
Mass of Moving Parts Mms 12.75 g
Force Factor Bl 8.611 T-M
Mechanical Q Factor Qms 3.608
Electrical Q Factor Qes 0.351
Total Q Factor Qts 0.320
Voice Coil Inductance @ 1 kHz Le 60.226 uH
Reference Efficiency No 1.525%
Sound Pressure Level SPL 93.852 Db