Eminence Kappa Pro 18LF-8 18" PA Subwoofer 8-Ohm Bass Guitar Woofer 1600W Speaker.

Eminence KAPPA PRO 18LF-8

The latest addition to the popular Kappa series of drivers, the Kappa Pro 18LF provides tons of low frequency output in a lightweight, durable cast aluminum chassis. Use it as a subwoofer in small to medium sized boxes, a woofer in large three-way PA enclosures, or as a high-power bass guitar woofer. The 1,600 watt program power rating makes it an easy choice for new box designs or as a replacement for many single and double subwoofer cabinets.

Specification Nominal Basket Diameter

• 18", 457 mm

Nominal Impedance*

• 8 Ω

Power Rating Program Power

• 1600 W

Watts

• 800 W

Resonance

• 32 Hz

Usable Frequency Range

• 38 Hz - 0.7 kHz

Sensitivity*

• 98 dB

Magnet Weight

• 120 oz.

Gap Height

• 0.37", 9.5 mm

Voice Coil Diameter

• 3", 76 mm

Thiele & Small Parameters Resonant Frequency (fs)

• 32 Hz

DC Resistance (Re)

• 5.39 Ω

Coil Inductance (Le)

• 1.21m H

Mechanical Q (Qms)

• 10.66

Electromagnetic Q (Qes)

• 0.34

Total Q (Qts)

• 0.33

Compliance Equivalent Volume (Vas)

• 391.61 liters / 13.83 cu.ft.

Peak Diaphragm Displacement Volume (Vd)

• 927.2 cc

Mechanical Compliance of Suspension (Cms)

• 0.21 mm/N

BL Product (BL)

• 19.39 T-M

Diaphragm Mass Inc. Airload (MMs)

• 119 grams

Efficiency Bandwidth Product (EBP)

• 94

Maximum Linear Excursion (Xmax)

• 8 mm

Surface Area of Cone (Sd)

• 1159 cm2

Maximum Mechanical Limit (Xlim)

• 18 mm

Mounting Information Recommended Enclosure Volume Sealed

• 0-0 liters / 0-0 cu.ft.

Vented

• 113.27-353.96 liters / 4-12.5 cu.ft.

Driver Volume Displaced

• 0.234 cu.ft. / 6.62 liters

Overall Diameter

• 18", 457.2 mm

Baffle Hole Diameter

• 16.58", 421.1 mm

Front Sealing Gasket

• Yes

Rear Sealing Gasket

• Yes

Mounting Holes Diameter

• 0.28", 7.1mm

Mounting Holes B.C.D.

• 17.25", 438.2mm

Depth

• 8.15", 207 mm

Net Weight

• 24.5 lbs, 11.11 kg

Shipping Weight

• 28.1 lbs, 12.75 kgs

Materials of Construction Coil Construction

• Copper voice coil

Coil Former

• Kapton former

Magnet Composition

• Ferrite magnet

Core Details

• Vented and extended core

Basket Materials

• Die-cast aluminum basket

Cone Composition

• Treated paper cone

Cone Edge Composition

• Cloth cone edge

Dust Cap Composition

• Treated paper dust cap