Designed for high power applications in main PA systems and sub-woofers, there is nothing that shakes the house like a KILOMAX. A massive 109 oz. cast frame magnet structure, double spider suspension, and integrated front loaded heat sink all combine to pound out whatever you pound in.
Features:
Kapton coil former
Ferrite magnet
Die-cast aluminum basket
Polyamide-imide coated copper voice coil
Paper cone/cloth cone edge
Kilomax alloy heatsink
Technical Info
Nominal Basket Diameter: 18 in., 457.2mm
Impedance: 8 ohms
Power Rating: 1250W rms
Music Program: 2500W
Resonance: 33Hz
Usable Frequency Range: 25Hz - 600Hz
Average Sensitivity 1W @ 1m: 97dB
Magnet Weight: 109 oz.
Gap Height: 0.375 in., 9.52mm
Voice Coil Diameter: 4 in., 101.6mm
Overall Diameter: 18 in., 457.2mm
Baffle Hole Diameter: 16.56 in., 420mm
Front Sealing Gasket: fitted as standard
Rear Sealing Gasket: fitted as standard
Fixing Holes Diameter: 0.275 in., 6.4mm
Fixing Hole B.C.D.: 17.25 in., 438.2mm
Depth: 8.15 in., 207mm
Shipping Weight: 32 lbs, 14.6 kg
Resonant Frequency: 33Hz
Impedance (RE): 5.84 ohms
Coil Inductance (Le): 2.38mH
Electromagnetic Q (Qes): 0.58
Mechanical Q (Qms): 14.24
Total Q (Qts): 0.56
Compliance Equivalent Volume (Vas): 239.9 liters, 8.47 cu. ft.
Peak Diaphragm Displacement Volume (Vd): 1141cc
Mechanical Compliance of suspension (Cms): 0.13mm/N
BL Product (BL): 19.7 T-M
Diaphragm Mass inc. Airload (Mms): 186 grams
Equiv. Resistance of mechanical suspension loss (Rms): 2.69N*sec/M
Efficiency Bandwidth Product (EBP): 57
Voice Coil Overhang (Xmax): 9.8mm
Surface Area of Cone (Sd): 1159cm2
Impedance at Resonance (Zmax): 150 ohms
Important Note
Watts: The guaranteed long term power rating throughout the usable frequency range of the speaker.
(Translation: the speaker will operate continuously at any frequency within the speakers specified frequency range when driven at this power. The "Watts" rating is similar to RMS, but is really more indicative of long term thermal capability.)
Music Program: The speaker will safely and reliably handle the varying frequencies of musical content at this power rating. The "Music Program" rating is more indicative of what you can expect in the real world with the speaker operating within the appropriate enclosure reproducing music or vocal audio program.
This item must be exchanged directly through the manufacturer if it is found to be defective, and can only be returned to us if it is unopened. 
