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The Eminence Impero 18 Inch Replacement PA Speaker plays extremely loud and low in compact vented designs. Advancements include a 1/2 inch thick by 7.5 inch diameter machined top plate, one piece machined T-yoke, and a 4 inch deep wound fiberglass voice coil. These features combined with an ultra-linear long-excursion suspension and bumped motor assembly allow the Impero 18 Inch Replacement PA Speaker to move serious air, generate serious SPL, while handling tremendous amounts of power.
The 18 inch Impero rated at 1,200 watt continuous / 2,400 watt program power, has a frequency range of 39 Hz to 820 Hz, and is suited for full-range three-way boxes, bass guitar boxes, and small subwoofers. Available in 4 or 8 ohms.
Eminence Impero 18 Inch Replacement PA Speaker Features
- Plays extremely loud and low in compact vented designs
- 1/2 inch thick by 7.5 inch diameter machined top plate
- One piece machined T-yoke
- 4 inch deep wound fiberglass voice coil
- Ultra-linear long-excursion suspension and bumped motor assembly
- 1,200 watt continuous / 2,400 watt program power
- Suited for full-range three-way boxes, bass guitar boxes, and small subwoofers
Eminence Impero 18 Inch Replacement PA Speaker Specifications
Nominal Basket Diameter: 18 inches, 457.2 millimeters
Nominal Impedance: 18A 8 ohms, 18C 4 ohms
Power Rating
- Watts:1200 watts
- Music Program: 2400 watts
Resonance: 33.17Hz
Usable Frequency Range: 39Hz - 0.82kHz
Sensitivity: 95.9dB
Magnet Weight: 109 oz.
Gap Height: 0.5 inches, 12.7 millimeters
Voice Coil Diameter: 4 inches, 101.6 millimeters
Thiele and Small Parameters
- Resonant Frequency (fs): 33.17Hz
- DC Resistance (Re): 5.41
- Coil Inductance (Le): 1.47mH
- Mechanical Q (Qms): 14.02
- Electromagnetic Q (Qes): 0.44
- Total Q (Qts): 0.43
- Compliance Equivalent Volume (Vas): 317.02 liters / 11.19 cu.feet
- Peak Diaphragm Displacement Volume (Vd): 927.2cc
- Mechanical Compliance of Suspension (Cms): 0.17mm/N
- BL Product (BL): 18.9 T-M
- Diaphragm Mass Inc. Airload (MMs): 139.52 grams
- Efficiency Bandwidth Product (EBP): 75.37
- Maximum Linear Excursion (Xmax): 8 millimeters
- Surface Area of Cone (Sd): 1159 cm2
- Maximum Mechanical Limit (Xlim): 20.1 millimeters
Mounting Information
- Recommended Enclosure Volume: 113.2-277.5 liters / 4-9.8 cu.feet
- Driver Volume Displaced: 409.6 cu.inches / 6.7 liters
- Overall Diameter: 18 inches, 457.2 millimeters
- Baffle Hole Diameter: 16.56 inches, 420.62 millimeters
- Front Sealing Gasket: Fitted as standard
- Rear Sealing Gasket: Fitted as standard
- Mounting Holes Diameter: 0.29 inches, 7.36 millimeters
- Mounting Holes B.C.D.: 17.25 inches, 438.15 millimeters
- Depth: 8.31 inches, 211.07 millimeters
- Net Weight: 27.3 pounds, 12.3 kg
- Shipping Weight: 30.8 pounds, 13.9 kg.
Materials of Construction
- Coil Construction: Copper voice coil
- Coil Former: Fiberglass
- Magnet Composition: Ferrite magnet
- Core Details: Bumped Vented Extended core
- Basket Materials: Die-cast aluminum basket
- Cone Composition: Water Resistant Treated Paper Cone
- Cone Edge Composition: Treated Cloth cone edge
- Dust Cap Composition: Water Resistant Treated Paper dust cap
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- Overview
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- Also Purchased
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