18WU/4741T00

MIDWOOFER 18WU/4741T00

KEY FEATURES:
— Under-Hung Neodymium Motor Design
— Patented Sandwich Paper Cone
— Low-Loss linear suspension
— Patented Symmetrical Drive (SD-3)
— Exceptionally Long Linear Excursion
— Patented Design

T-S Parameters
Resonance frequency [fs] 30 Hz
Mechanical Q factor [Qms] 3.56
Electrical Q factor [Qes] 0.32
Total Q factor [Qts] 0.29
Force factor [Bl] 6 Tm
Mechanical resistance [Rms] 1.00 kg/s
Moving mass [Mms] 18.9 g
Suspension compliance [Cms] 1.49 mm/N
Effective diaph. diameter [D] 140 mm
Effective piston area [Sd] 154 cm²
Equivalent volume [Vas] 49.4 l
Sensitivity (2.83V/1m) 87.2 dB
Ratio Bl/√Re 3.35 N/√W
Ratio fs/Qts 102 Hz
Electrical Data
Nominal impedance [Zn] 4 N
Minimum impedance [Zmin] 4.5 N
Maximum impedance [Zo] 38.8 N
DC resistance [Re] 3.2 N
Voice coil inductance [Le] 0.5 mH
Power Handling
100h RMS noise test (IEC 17.1) 80 W
Long-term max power (IEC 17.3) 150 W
Voice Coil and Magnet Data
Voice coil diameter 42 mm
Voice coil height 8 mm
Voice coil layers 4
Height of gap 20 mm
Linear excursion ± 9 mm
Max mech. excursion ± 16 mm
Unit weight 1.7 kg