Guitar Bass Pro Audio Custom / OEM
 
KILOMAX® PRO 18A    
SPECIFICATION  
Nominal Basket Diameter 18", 457.2mm
Nominal Impedance* 8 ohms
Power Rating  
Watts 1250W
Music Program 2500W
Resonance 32Hz
Usable Frequency Range 33Hz-300Hz
Sensitivity*** 95.8
Magnet Weight 109 oz.
Gap Height 0.375", 9.53mm
Voice Coil Diameter 4", 101.6mm
   
THIELE & SMALL PARAMETERS  
Resonant Frequency (fs) 32Hz

Download PDF Spec Sheet

 

 

Download PDF Cabinet Design

 
DC Resistance (Re) 5.07
Coil Inductance (Le) 1.59mH
Mechanical Q (Qms) 10.15
Electromagnetic Q (Qes) .49
Total Q (Qts) 0.47
Compliance Equivalent Volume (Vas) 331.5 liters / 11.7 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 1159cc
Mechanical Compliance of Suspension (Cms) 0.18mm/N
BL Product (BL) 17.2 T-M
Diaphram Mass inc. Airload (Mms) 143.17 grams
Efficiency Bandwidth Product (EBP) 64.9
Maximum Linear Excursion (Xmax) 10.0mm
Surface Area of Cone (Sd) 1159.0 cm2  
Maximum Mechanical Limit (Xlim) 19.2mm  
     
MOUNTING INFORMATION    
Recommended Enclosure    
Sealed 104.8-172.7 liters/3.7-6.1cu.ft.  
Vented 118.9-303 liters/4.2-10.7cu.ft.  
Overall Diameter 18", 457.2mm  
Baffle Hole Diameter 16.56", 420.6mm  
Front Sealing Gasket Fitted as standard  
Rear Sealing Gasket Fitted as standard  
Mounting Holes Diameter 0.28", 7.1mm  
Mounting Holes B.C. D. 17.25", 438.2mm  
Depth 8.15", 207mm  
Net Weight 27.4 lbs., 12.4 kg  
Shipping Weight 30.9 lbs., 14 kg  
     
MATERIALS OF CONSTRUCTION    
Coil Construction Copper voice coil  
Coil Former Kapton  
Magnet Composition Ferrite magnet  
Core Details Extended core with Core Periphery Ventilation  
Basket Materials Die-cast aluminum basket  
Cone Composition Treated Paper-Kevlar  
Cone Edge Composition Cloth cone edge  
Dustcap Composition Porous cloth top spider/ heatsink  
     
FOOTNOTES    

*

Please consult www.eminence.com for specifications of models with alternative impedances.
** Multiple units exceed published rating evaluated under EIA 426A noise source and test standard while in a free-air, non-temperature controlled environment.
***

The average on axis output across the usable frequency range when applying 1W/1m into the nominal impedance, i.e. 2.83V/8Ω, 4V/16Ω.  Eminence response curves are measured under the following conditions:  All speakers are tested at 1W/1m using a variety of test set-ups for the appropriate impedance | LMS using 0.25" supplied microphone (software calibrated) mounted 1m from wall/baffle | 2ft x 2ft baffle is built into the wall with speaker mounted flush against a steel ring for minimum diffraction | Carver PM-120 amplifier | 2700ft3 chamber with fiberglass on all six surfaces (three with custom-made wedges).

**** BETA 8CX, 10CX, 12CX and Acoustinator™ CX2008 are coaxial speakers with tweeter sold separately. Published Usable frequency response obtained with APT50 high frequency driver attached.