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Klipsch K-47 substitute

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This will do the job in 600s-------------------------------



Nominal Impedance* 8 ohms

Power Rating**

Watts 650W

Music Program 1300W

Resonance 28Hz

Usable Frequency Range 41Hz - 2.4kHz

Sensitivity*** 99dB

Magnet Weight 120 oz.

Gap Height 0.37", 9.53mm

Voice Coil Diameter 3", 76.2mm


Resonant Frequency (fs) 28Hz

DC Resistance (Re) 6.29

Coil Inductance (Le) 1.9mH

Mechanical Q (Qms) 8.28

Electromagnetic Q (Qes) 0.3

Total Q (Qts) 0.29

Compliance Equivalent Volume (Vas) 441.2 liters / 15.6 cu.ft.

Peak Diaphragm Displacement Volume (Vd) 695cc

Mechanical Compliance of Suspension (Cms) 0.24mm/N

BL Product (BL) 22.1 T-M

Diaphragm Mass Inc. Airload (MMs) 130 grams

Efficiency Bandwidth Product (EBP) 93

Maximum Linear Excursion (Xmax) 6.1mm

Surface Area of Cone (Sd) 1140 cm2

Maximum Mechanical Limit (Xlim) 18mm


Recommended Enclosure Volume

Sealed N/a

Vented 93-212 liters / 3.3-7.5 cu.ft.

Driver Volume Displaced 403.9 cu.in. / 6.62 liters

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 24.5 lbs, 11.1 kg

Shipping Weight 28.1 lbs, 12.8 kgs


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

Dust Cap Composition Solid composition paper dust cap

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