Eminence EJ-1240 12" Guitar Speaker

PA SKU # EMN EJ1240 MFR # EJ-1240 UPC # 876358002313
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  • 12" Signature Guitar Driver, 8 Ohm, 40 Watt

12" Signature Guitar Driver, 8 Ohm, 40 Watt

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, crisp upper-mids, and very controlled, articulate, and open highs
  • Application: 12" open- or closed-back
  • Configuration: 1, 2, or 4 x 12"
  • Designed by amp guru George Alessandro and guitar guru Eric Johnson
  • Tight punchy lows, growling low-mids, crisp upper mids, and articulate open highs
  • 40W power rating, 8 ohms
  • SPECIFICATION
  • Nominal Basket Diameter: 12", 305 mm
  • Nominal Impedance*: 8 Ω
  • Power Rating**
  • Watts: 40 W
  • Music Program: N/A
  • 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: N/A
  • 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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