EMINENCE EKMP18C Kilomax Pro-18 – 18″ Speaker 1250 W 4 Ohms – Alu Basket

KILOMAX PRO Serie 1250W

Recommended for professional audio subwoofer and woofer applications in sealed and vented enclosures. Not for horn-loading or scoops.

• Nominal Basket Diameter 18“, 457.2 mm
• Nominal Impedance 8 ohms
• Power Rating Watts 1250 W / Music Program 2500 W
• Resonance 33 Hz
• Usable Frequency Range 33 Hz - 600 Hz
• Sensitivity 95.5
• Magnet Weight 109 oz.
• Gap Height 0.375“, 9.53 mm
• Voice Coil Diameter 4“, 101.6 mm

• Resonant Frequency (fs) 33 Hz
• DC Resistance (Re) 5.84
• Coil Inductance (Le) 2.38 mH
• Mechanical Q (Qms) 14.24
• Electromagnetic Q (Qes) 0.58
• Total Q (Qts) 0.56
• Compliance Equivalent Volume (Vas) 239.9 liters / 8.5 cu. ft.
• Peak Diaphragm Displacement Volume (Vd) 1136 cc
• Mechanical Compliance of Suspension (Cms) 0.13 mm/N
• BL Product (BL) 19.7 T-M
• Diaphragm Mass inc. Airload (Mms) 186 grams
• Efficiency Bandwidth Product (EBP) 57
• Maximum Linear Excursion (Xmax) 9.8 mm
• Surface Area of Cone (Sd) 1159.0 cm²
• Maximum Mechanical Limit (Xlim) 19.1 mm

• Recommended Enclosure Volume
  Sealed 133-147 liters/4.7-5.2 cu. ft.
  Vented 144-258 liters/5.1-9.1 cu. ft.
• Overall Diameter 18“, 457.2 mm
• Baffle Hole Diameter 16.56“, 420.6 mm
• Front Sealing Gasket fitted as standard
• Rear Sealing Gasket fitted as standard
• Mounting Holes Diameter 0.25“, 6.4 mm
• Mounting Holes B.C.D. 17.25“, 438.2 mm
• Depth 8.15“, 207 mm

• Copper voice coil
• Polyimide former
• Ferrite magnet
• Extended core with Core Periphery Ventilation
• Die-cast aluminum basket
• Paper Cone
• Cloth cone edge
• Porous cloth top spider/ heatsink

Nominal Specifications

    Nominal Diameter 18“, 460 mm
    Overall Diameter 18.11“, 460 mm
    Bolt Circle Diameter 17.32“, 440 mm
    Baffle Cutout Diameter 16.6“, 422 mm
    Depth 9.09“, 231 mm
    Flange and Gasket Thickness 0.55“, 14 mm


Electrical Specifications

    Minimum Impedance 7.2 Ohm
    Nominal Impedance 8 Ohm
    Nominal Power Handling*** 1,600 W
    Maximum Power Handling**** 3,200 W
    Sensitivity (1W/1m) 98 dB
    Frequency Range 30 - 1500 Hz
    Voice Coil Diameter 4“, 100 mm
    Winding Material Copper
    Former Material Glass Fiber
    Winding Depth 1.23“, 31.3 mm
    Magnetic Gap Depth 0.61“, 15.5 mm
    Flux Density 1.05 T


THIELE & SMALL Parameters

    Resonant Frequency (fs) 32 Hz
    DC Resistance (Re) 5.4 Ohm
    BL Product (BL) 26.7 N/A
    Diaphragm Mass inc. Airload (Mms) 240 grams
    Mechanical Compliance of Suspension (Cms) 0.1 mm/N
    Rms 5.27 Kg/s
    Electromagnetic Q (Qes) 0.37
    Mechanical Q (Qms) 9.3
    Total Q (Qts) 0.36
    Compliance Equivalent Volume (Vas) 6.9 ft³, 195.5 dm³
    Surface Area of Cone (Sd) 182“², 1,174 cm²
    Maximum Linear Excursion (Xmax)* 13 mm
    Xdamage** 28 mm
    Coil Inductance (Le) 1.45 mH
    Diaphragm mass (Mmd) 217 g
    Eta Zero 1.76 %

Notes

    *Xmax = [(winding depth - magnetic gap depth) / 2] + (magnetic gap depth / 3)
    **Maximum excursion before permanent damage
    ***2 Hours Test According to AES 2-1984 Rev. 2003
    ****Maximum power is defined as 3dB greater than nominal power

• 95 dB Sensitivity 1 W / 1 m
• 1500 W Power handling
• 4" Copper sandwich voice coil for low power compression
• Neodymium magnet system
• Double treated cone for water protection
• Triple aluminum demodulating rings for ultra low distortion
• Optimal for high output Subwoofers

• General

  • Product type : Cone driver
  • Brand : B&C Speakers
  • Manufacturer reference : 18PS76

• Informations

  • Nominal impedance : 8 ohm
  • Dimensional category : 18 inch
  • Frequency coverage type : Sub, Low
  • Manufacturer sensitivity : 99 dB
  • Calculated sensitivity : 98.11 dB
  • Nominal power handling : 600 W
  • Bandwidth : 40÷2000 Hz

• Fundamental parameters

  • Sd : 1210 cm²
  • Mms : 149 gr
  • Le : 1.9 mH
  • Re : 5 ohm
  • BL : 25.8 T.m

• Small signal parameters

  • Fs : 39 Hz
  • Qes : 0.29
  • Qms : 6.1
  • Qts : 0.27
  • Vas : 207 L

• Datas

  • Xmax : ±7 mm
  • EBP : 134 Hz
  • Zmin : 6.5 ohm
  • Fs / Qts : 144 Hz
  • Vas * Qts² : 15.1 L
  • Efficiency : 4 %
  • Calculated efficiency : 4.07 %
  • Weight : ~10.7 kg

• Dimensions

  • Voice coil diameter : 3 inch
  • Winding depth : 24 mm
  • Gap height : 11 mm
  • Outside diameter : 460 mm
  • Baffle cutout diameter : 422 mm
  • Front thickness : 16 mm
  • Depth after front : 186 mm

• Shape & Materials

  • Front chape : Cylindrical
  • Magnet type : Ferrite
  • Basket masterial : Aluminium
  • Winding material : Copper
  • Voice coil former : Glass fiber