Speaker Component Precision device 18 inch

FS
34.2 Hz
QTS
0.52
VAS
192 L
SD
1134 cm²
XMAX
± 10.5 mm
Resonant frequency fS 34.18 Hz
Electrical Q QES 0.55
Mechanical Q QMS 10.77
Total Q factor QTS 0.52
Suspension equivalent air volume VAS 192.15 litres
DC resistance RE 6.19 Ω
Voice coil inductance LE 1.95 mH
Force factor B·l 22.18 T·m
Suspension mechanical resistance RMS 4.1 N·s/m
Suspension mechanical compliance CMS 107 µm/N
Moving mass MMD 175.9 g
Moving mass (including airload) MMS 203.93 g
Surface of the diaphragm SD 1134.11 cm²
Effective diaphragm diameter Ø 38 cm
Maximum linear excursion Xmax ± 10.5 mm
Displacement volume at Xmax VD 1200 cm³
Efficiency η₀ 2.05 %
Efficiency bandwidth product EBP 62
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Overall diameter 474 mm
Baffle hole diameter 414.5 mm
Overall depth 187.5 mm
Mounting depth 173 mm
Flange thickness 14.5 mm
Net weight 14.9 kg
Diaphragm material Paper
Surround material Fabric
Voice coil diameter 127 mm
Voice coil height (HVC) 25 mm
Coil material Copper
Former material Glass Fibre
Magnet Ceramic
Air gap height 9 mm
Flux density 0.95 Tesla




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