Markaudio Alpair-12PW 8" Paper Woofer

Woofer Type : Midwoofer
Nominal Diameter : 8"
Power Handling (RMS) : 40 Watts
Impedance (Z) : 8 ohms
Sensitivity : 87.5 dB 2.83V/1m
Frequency Response : 30 to 12,000 Hz
Voice Coil Diameter : 1"
DC Resistance (Re) : 5.4 ohms
Voice Coil Inductance (Le) : 0.49 mH
Resonant Frequency (Fs) : 73.4 Hz
Mechanical Q (Qms) : 1.44
Electromagnetic Q (Qes) : 0.54
Total Q (Qts) : 0.39
Diaphragm Mass Inc. Airload (Mms) : 11.69 g
Surface Area of Cone (Sd) : 147.4 cm²
BL Product (BL) : 5.31 Tm
Compliance Equivalent Volume (Vas) : 1.59 ft.³
Maximum Linear Excursion (Xmax) : 8.5 mm
Cone / Diaphragm Material : Paper
Surround Material : Rubber
Basket / Frame Material : Glass-Fibre
Magnet Material : Ferrite
Overall Outside Diameter : 8.15"
Overall Depth : 3.78"
Baffle Cutout Diameter : 6.61"
Bolt Circle Diameter : 7.32"
# Mounting Holes : 4