SPECIFICATION 4 ohms
Nominal Basket Diameter 18", 457.2mm
Music Program 1600W
Usable Frequency Range 40Hz-800Hz
Magnet Weight 109 oz.
Gap Height 0.375", 9.53mm
Voice Coil Diameter 4", 101.6mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs) 23Hz
DC Resistance (Re) 2.5
Coil Inductance (Le) 0.61mH
Mechanical Q (Qms) 6.41
Electromagnetic Q (Qes) 0.29
Total Q (Qts) 0.28
Compliance Equivalent Volume (Vas) 639 liters / 22.6 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 556cc
Mechanical Compliance of Suspension (Cms) 0.34mm/N
BL Product (BL) 13.4 T-M
Diaphram Mass inc. Airload (Mms) 137 grams
Efficiency Bandwidth Product (EBP) 79
Maximum Linear Excursion (Xmax) 4.8mm
Surface Area of Cone (Sd) 1159.0 cm2
Maximum Mechanical Limit (Xlim) 16.0mm
Vented 99-193 liters/ 3.5-6.8 cu.ft.
Overall Diameter 18", 457.2mm
Baffle Hole Diameter 16.56", 420.5mm
Front Sealing Gasket fitted as standard
Rear Sealing Gasket fitted as standard
Mounting Holes Diameter 0.28", 7.1mm
Mounting Holes B.C. D. 17.25", 438.2mm
Depth 8.15", 207mm
Net Weight 25.1 lbs., 11.4 kg
Shipping Weight 28.6 lbs., 13 kg
MATERIALS OF CONSTRUCTION
Coil Construction Copper voice coil
Coil Former Polyimide former
Magnet Composition Ferrite magnet
Core Details Vented and extended core
Basket Materials Die-cast aluminum basket
Cone Composition Paper Cone
Cone Edge Composition Cloth cone edge
Dustcap Composition Solid composition paper dust cap
weight: 27.00 (lbs)
*Warranty: 1 Year Manufacturer warranty.
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