American Musical Supply
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Eminence Kilomax Pro 18A - 18" Replacement PA Speaker

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Product Description

Designed for high power applications in main PA systems and sub-woofers, the Eminence Kilomax 18A Subwoofer Speaker is sure to rattle the walls in any venue. 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. 8 ohms, 1250 watts and 2500 watt music program rating.

Materials of Construction

  • Kapton coil former
  • Ferrite magnet
  • Die-cast aluminum basket
  • Polyamide-imide coated copper voice coil
  • Paper cone/cloth cone edge
  • Kilomax alloy heatsink

Product Specifications


  • Nominal Basket Diameter: 18 inch, 457.2mm
  • Impedance: 8 ohm
  • Power Rating:
    • Music Program: 2500W
    • Watts:1250W
  • Resonance: 33Hz
  • Usable Frequency Range: 25Hz - 600Hz
  • Average Sensitivity 1W @ 1m: 97dB
  • Magnet Weight: 109oz.
  • Gap Height: 0.375 inch, 9.52mm
  • Voice Coil Diameter: 4 inch, 101.6mm

Mounting Information

  • Overall Diameter: 18 inch, 457.2mm
  • Baffle Hole Diameter: 16.56 inch, 420mm
  • Front Sealing Gasket: fitted as standard
  • Rear Sealing Gasket: fitted as standard
  • Fixing Holes Diameter: 0.275 inch, 6.4mm
  • Fixing Hole B.C.D.: 17.25 inch, 438.2mm
  • Depth: 8.15 inch, 207mm
  • Shipping Weight: 32 lbs, 14.6 kg

Thiele-Small Parameters

  • Resonant Frequency: 33Hz
  • Impedance (RE): 5.84 ohm
  • 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): 150ohm

Helpful Info about the Manufacturer
Phone:  502-845-5622 Warranty:  Warranty: 7 years
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