EMINENCE BETA 12A-2, 12" 8 OHM SB12

BETA 12A

EMINENCE BETA 12, 12" 8 OHM 250 WATT/MUSIC PROGRAM 500W SPEAKER. IT MAY SEEM LIKE OVERKILL ON THE WATTAGE BUT THESE MODERN SPEAKERS ARE MORE EFFICIENT AND HAVE PROVEN THEMSELVES TIME AND AGAIN AS AND EXCELLENT  MATCH WITH THESE AMPS.   DON'T SEE THE SPEAKER YOU WANT HERE? GIVE US A CALL. WE HAVE ACCESS TO A LARGE ARRAY OF SPEAKER TYPES AND BRANDS

SPECIFICATION   
Nominal Basket Diameter  12", 304.8mm
Nominal Impedance*  8 ohms
Power Rating   
Watts 250W
Music Program  500W
Resonance 47Hz
Usable Frequency Range  43Hz-3.8kHz
Sensitivity*** 98
Magnet Weight  38 oz.
Gap Height  0.312", 7.92mm
Voice Coil Diameter 2", 50.8mm
   
THIELE & SMALL PARAMETERS   
Resonant Frequency (fs)  47Hz
DC Resistance (Re)  5.0
Coil Inductance (Le)  0.64mH
Mechanical Q (Qms)  6.00
Electromagnetic Q (Qes)  0.50
Total Q (Qts)  0.46
Compliance Equivalent Volume (Vas)  120.1 liters / 4.2 cu.ft.
Peak Diaphragm Displacement Volume (Vd)  237cc
Mechanical Compliance of Suspension (Cms)  0.29mm/N
BL Product (BL)  10.8 T-M
Diaphram Mass inc. Airload (Mms)  40 grams
Efficiency Bandwidth Product (EBP)  94
Maximum Linear Excursion (Xmax)  4.4mm
Surface Area of Cone (Sd)  538.9 cm2
Maximum Mechanical Limit (Xlim)  11mm
   
MOUNTING INFORMATION     
Recommended Enclosure     
Sealed 25.5-35.4 liters, 0.9-1.25 cu.ft.  
Vented 36.8-139 liters/1.3-4.9 cu.ft.  
Overall Diameter  12.03", 305.5mm  
Baffle Hole Diameter  10.95", 278.1mm  
Front Sealing Gasket  Fitted as standard  
Rear Sealing Gasket  Fitted as standard  
Mounting Holes Diameter  0.25", 6.4mm  
Mounting Holes B.C. D.  11.59", 294.3mm  
Depth 4.57", 116mm  
Net Weight  7.5 lbs., 3.4 kg  
Shipping Weight  9.7 lbs., 4.4 kg  
     
MATERIALS OF CONSTRUCTION     
Coil Construction  Copper voice coil  
Coil Former Polyimide former  
Magnet Composition  Ferrite magnet  
Core Details  Vented and extended core  
Basket Materials  Pressed steel basket  
Cone Composition  Paper Cone  
Cone Edge Composition  Cloth cone edge  
Dustcap Composition Solid composition paper dust cap

$ 64.99

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