• Eminence EJ-1240 12in Speaker 40w 8 Ohm Eric Johnston Signature
  • Eminence EJ-1240 12in Speaker 40w 8 Ohm Eric Johnston Signature
  • Eminence EJ-1240 12in Speaker 40w 8 Ohm Eric Johnston Signature

    Eminence EJ-1240 12in Speaker 40w 8 Ohm Eric Johnston Signature

    Regular price $555.00
    Ships From Warehouse (May be subject to backorder)

    SKU: EJ1240

    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.

    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

     

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