Alpine SWE-1242 - Manual (Page 3)

SPECIFICATIONS
Model S WE-1242 S WE-1042
Size 12" 10"
Impedance 4Q 4Q
Power Handling (RMS/Peak) 250W/750W 250W/750W
Frequency Response Fs~1kHz Fs-lkHz
Sensitivity* 89dB 87dB
DC Coil Resistance (Re) 3.6 Q 3.6 Q
Inductance (Le) 1kHz/20kHz 2.78mH/0.86mH 2.70mH/0.85mH
Free Air Resonance (Fs) 31 Hz 33Hz
Equivalent Stiffness (Vas) 61L 33L
Qms/Qes/Qts 9.68/0.70/0.66 9.85/0.71/0.66
X max / X peak 11.7mm/23.4mm 11.7mm/23.4mm
Mechanical Excursion (P-P) 40mm 36mm
Gap/Coil Height (Hag/Hvc) 10mm/33.4mm 10mm/33.4mm
Cone Area (Sd) 490.87 cm^ 339.79 cm^
Diaphragm Material
Kevlar Reinforced
Pulp
Kevlar Reinforced
Pulp
Spider Material Nomex Nomex
Magnet Weight 64oz 44.80Z
Voice Coil Diameter 38mm 38mm
Displacement (front mount)** 0.086 ft'^S 0.061 ft'^3
Displacement (rear mount) 0.092 ft^3 0.079 ft^'S
Added Volume (reverse mount)** 0.084 ft'^S 0.056 ft'^S
Recommended Sealed Box Volume 0.8-1.7 ft'^S 0.6-1.25 ft'^S
Note: All specifications are subject to change without notice
# All T/S parameters measured/calculated, after break-in.
* This commonly misunderstood specification should not be used as a reference for subwoofer output capability.
** Based upon 3/4" (19mm) baffle thickness, with opening cut approximately to gasket inner diameter
SPECIFICATIONS
Modèle SWE-1242 SWE-1042
Dimensions 12" 10"
Impedance 4Q 4Q
Puissance (RMS/MAX) 250W/750W 250W/750W
Réponse en fréquence Fs-lkHz Fs-lkHz
Sensibilité 89dB 87dB
Résistance en continu (Re) 3.6 Q 3.6 Q
Inductance (Le) 1kHz/20kHz 2.78mH/0.86mH 2.70mH/0.85mH
Fréquence de résonnance (Fs) 31 Hz 33Hz
Raideur equivalente (Vas) 61L 33L
Qms/Qes/Qts 9.68/0.70/0.66 9.85/0.71/0.66
X max / X crête 11.7mm/23.4mm 11.7mm/23.4mm
Excursion mécanique (P-P) 40mm 36mm
Largeur Entrefer/Bobine (Hag/Hvc) 10mm/33.4mm 10mm/33.4mm
Surface de cône (Sd) 490.87 cm^ 339.79 cm^
Membrane Kevlar renforcé Kevlar renforcé
Suspension Nomex Nomex
Poids de l'aimant 64oz 44.80Z
Diamètre de bobine 38mm 38mm
Displacement (en avant) 0.086 ft'^S 0.061 ft'^S
Displacement (en arrière) 0.092 ft'^S 0.079 ft'^S
Volume en plus (en renvèrse) 0.084 ft'^S 0.056 ft'^S
Volume de charge recommandé 0.8-1.7 ft^'S 0.6-1.25 ft''3