Description
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 | N/A |
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 |
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