
Eminence IMPERO 12A Woofer
The Eminence Impero 12A 12" high power pro audio speaker is optimized for use in vented enclosures. Its 1,100 watt continuous power rating is a result of Eminence's extensive experience designing and manufacturing loudspeaker drivers for serious professional use.
This 12" cast frame transducer features a 4" diameter copper voice coil that is wound on a fiberglass former. A large magnet, extended and vented pole piece, bumped back plate, and 1/2" thick x 7-1/2" diameter top plate ensure substantial motor strength, resulting in tremendous bass output.
The Impero 12A High power driver is recommended for pro audio in vented enclosures. Ideal for two-way top boxes, full-range two-way boxes, bass guitar boxes, and small subwoofers. Recommended enclosure volume: Vented: 33.98 ~ 118.9 liters / 1.2 ~ 4.2 cu. ft.
Eminence IMPERO 12A Specifications:
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Nominal Basket Diameter: 12", 304.8mm
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Nominal Impedance: 8 ohms
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Power Rating: 1100W continuous, 2200W Music Program, 4400W Peak*
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Resonance: 42.75Hz
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Usable Frequency Range: 56Hz - 3kHz
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Sensitivity: 93dB**
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Magnet Weight: 109 oz.
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Gap Height: 0.5", 12.7mm
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Voice Coil Diameter: 4", 101.6mm
THIELE & SMALL PARAMETERS:
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Resonant Frequency (fs) 42.75Hz
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DC Resistance (Re) 5.58
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Coil Inductance (Le) 1.46mH
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Mechanical Q (Qms) 13.84
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Electromagnetic Q (Qes) 0.33
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Total Q (Qts) 0.32
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Compliance Equivalent Volume (Vas) 70.2 liters / 2.48 cu.ft.
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Peak Diaphragm Displacement Volume (Vd) 339.4cc
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Mechanical Compliance of Suspension (Cms) 0.17mm/N
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BL Product (BL) 19.49 T-M
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Diaphragm Mass Inc. Airload (MMs) 83.47 grams
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Efficiency Bandwidth Product (EBP) 129.8
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Maximum Linear Excursion (Xmax) 6.22mm
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Surface Area of Cone (Sd) 545.4 cm2
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Maximum Mechanical Limit (Xlim) 12.5mm
MATERIALS OF CONSTRUCTION:
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Coil Construction Copper voice coil
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Coil Former Fiberglass
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Magnet Composition Ferrite magnet
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Core Details Bumped Vented Extended core
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Basket Materials Die-cast aluminum basket
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Cone Composition Water Resistant Treated Paper Cone
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Cone Edge Composition Treated Cloth cone edge
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Dust Cap Composition Water Resistant Treated Paper dust cap