Eminence Eric Johnston Signature EJ1240 12" Speaker 40 Watts 8 Ohm - The Speaker Factory
Eminence Eric Johnston Signature EJ1240 12
Eminence Eric Johnston Signature EJ1240 12
Eminence Eric Johnston Signature EJ1240 12" Speaker 40 Watts 8 Ohm - The Speaker Factory
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Brand: Eminence

Product Code: EJ1240-8

Availability:Out of stock

$739.99 739.99

Eminence Eric Johnston Signature EJ1240 12" Speaker 40 Watts 8 Ohm 

Eric Johnson, George Alessandro and Eminence have teamed up once again to reinvent vintage tone. Through a reformulated paper cone and optimized basket design, the 40 watt EJ-1240 offers vintage Alnico tone with tight, punchy lows, nice lower-mid growl.

SPECIFICATION
Nominal Basket Diameter 12", 305 mm
Nominal Impedance* 8 Ω
Power Rating*
Program Power N/A
Watts 40 W
Resonance 75 Hz
Usable Frequency Range 80 Hz - 5 kHz
Sensitivity* 100.7 dB
Magnet Weight 35 oz.
Gap Height 0.313", 8 mm
Voice Coil Diameter 1.75", 44 mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs) 75 Hz
DC Resistance (Re) 7 Ω
Coil Inductance (Le) 0.6m H
Mechanical Q (Qms) 20.09
Electromagnetic Q (Qes) 0.54
Total Q (Qts) 0.53
Compliance Equivalent Volume (Vas) 71.19 liters / 2.51 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 64.4 cc
Mechanical Compliance of Suspension (Cms) 0.19 mm/N
BL Product (BL) 12.08 T-M
Diaphragm Mass Inc. Airload (MMs) 24 grams
Efficiency Bandwidth Product (EBP) 140
Maximum Linear Excursion (Xmax) 1.24 mm
Surface Area of Cone (Sd) 519.5 cm2
Maximum Mechanical Limit (Xlim) N/A
MOUNTING INFORMATION
Recommended Enclosure Volume
Sealed Acceptable
Vented Acceptable
Driver Volume Displaced 0.079 cu.ft. / 2.24 liters
Overall Diameter 12.17", 309.1 mm
Baffle Hole Diameter 11.13", 282.7 mm
Front Sealing Gasket Yes
Rear Sealing Gasket Yes
Mounting Holes Diameter 0.24", 6.1mm
Mounting Holes B.C.D. 11.75", 298.5mm
Depth 6.25", 158.8 mm
Net Weight 8.4 lbs, 3.81 kg
Shipping Weight 10.2 lbs, 4.63 kgs
MATERIALS OF CONSTRUCTION
Coil Construction Copper voice coil
Coil Former Paper former
Magnet Composition Alnico magnet
Core Details Non-vented core
   
Basket Materials Pressed steel basket
Cone Composition Paper cone
Cone Edge Composition Paper cone edge
Dust Cap Composition Zurette dust cap