Keterangan :

SPECIFICATION
Nominal Basket Diameter 18 " , 457.2mm
Nominal Impedance* 8 ohms
Power Rating
Watts 800W
Music Program 1600W
Resonance 25Hz
Usable Frequency Range 40Hz-800Hz
Sensitivity* * * 97
Magnet Weight 109 oz.
Gap Height 0.375 " , 9.53mm
Voice Coil Diameter 4 " , 101.6mm

THIELE & SMALL PARAMETERS
Resonant Frequency ( fs) 25Hz
DC Resistance ( Re) 5.20
Coil Inductance ( Le) 1.67mH
Mechanical Q ( Qms) 8.18
Electromagnetic Q ( Qes) 0.32
Total Q ( Qts) 0.31
Compliance Equivalent Volume ( Vas) 548.7 liters / 19.4 cu.ft.
Peak Diaphragm Displacement Volume ( Vd) 556cc
Mechanical Compliance of Suspension ( Cms) 0.29mm/ N
BL Product ( BL) 18.8 T-M
Diaphram Mass inc. Airload ( Mms) 138 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

MOUNTING INFORMATION
Recommended Enclosure
Sealed N/ A
Vented 96-198 liters/ 3.4-7 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 25.2 lbs., 11.4 kg
Shipping Weight 28.9 lbs., 13.1 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