Guitar Bass Pro Audio Custom / OEM
 
LAB12    
SPECIFICATION  
Nominal Basket Diameter 12", 304.8mm
Nominal Impedance* 6 ohms
Power Rating  
Watts 400W
Music Program 800W
Resonance 22Hz
Usable Frequency Range 25Hz-125Hz
Sensitivity*** 89.2
Magnet Weight 160 oz.
Gap Height 0.375", 9.53mm
Voice Coil Diameter 2.5", 63.5mm
   
THIELE & SMALL PARAMETERS  
Resonant Frequency (fs) 22Hz

Download PDF Spec Sheet


Download PDF Cabinet Design

 
DC Resistance (Re) 4.29
Coil Inductance (Le) 1.48mH
Mechanical Q (Qms) 13.32
Electromagnetic Q (Qes) 0.39
Total Q (Qts) 0.38
Compliance Equivalent Volume (Vas) 125.2 liters / 4.4 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 659cc
Mechanical Compliance of Suspension (Cms) 0.35mm/N
BL Product (BL) 15.0 T-M
Diaphram Mass inc. Airload (Mms) 146 grams
Efficiency Bandwidth Product (EBP) 56
Maximum Linear Excursion (Xmax) 13.0mm
Surface Area of Cone (Sd) 506.7 cm2
Maximum Mechanical Limit (Xlim) 22mm
   
MOUNTING INFORMATION    
Recommended Enclosure    
Sealed 22.7-28.3 liters/ 0.8-1 cu.ft.  
Vented 45.3-101.9 liters/1.6-3.6 cu.ft.  
Overall Diameter 12.32", 312.8mm  
Baffle Hole Diameter 10.98", 278.9mm  
Front Sealing Gasket Fitted as standard  
Rear Sealing Gasket Fitted as standard  
Mounting Holes Diameter 0.26", 6.6mm  
Mounting Holes B.C. D. 11.77", 299mm  
Depth 6.44", 164mm  
Net Weight 22 lbs., 10 kg  
Shipping Weight 23.8 lbs., 10.8 kg  
     
MATERIALS OF CONSTRUCTION    
Coil Construction Copper voice coil  
Coil Former Polyimide former  
Magnet Composition Double stacked 80 oz. ferrite magnets  
Core Details Vented and extended core  
Basket Materials 12-spoke die-cast aluminum basket  
Cone Composition Kevlar-reinforced paper cone  
Cone Edge Composition Foam cone edge  
Dustcap Composition Dual inverted dust caps  
     
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.