Eminence Impero 12A 8 ohm
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SPECIFICATION
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Nominal Basket Diameter
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12", 304.8mm
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Nominal Impedance*
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8 ohms
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Power Rating**
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Watts
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1100W
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Music Program
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2200W
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Resonance
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42.75Hz
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Usable Frequency Range
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56Hz - 3kHz
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Sensitivity***
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93dB
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Magnet Weight
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109 oz.
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Gap Height
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0.5", 12.7mm
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Voice Coil Diameter
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4", 101.6mm
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THIELE & SMALL PARAMETERS
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Resonant Frequency (fs)
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42.75Hz
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DC Resistance (Re)
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5.58
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Coil Inductance (Le)
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1.46mH
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Mechanical Q (Qms)
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13.84
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Electromagnetic Q (Qes)
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0.33
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Total Q (Qts)
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0.32
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Compliance Equivalent Volume (Vas)
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70.2 liters / 2.48 cu.ft.
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Peak Diaphragm Displacement Volume (Vd)
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339.4cc
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Mechanical Compliance of Suspension (Cms)
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0.17mm/N
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BL Product (BL)
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19.49 T-M
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Diaphragm Mass Inc. Airload (MMs)
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83.47 grams
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Efficiency Bandwidth Product (EBP)
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129.8
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Maximum Linear Excursion (Xmax)
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6.22mm
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Surface Area of Cone (Sd)
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545.4 cm2
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Maximum Mechanical Limit (Xlim)
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12.5mm
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MOUNTING INFORMATION
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Recommended Enclosure Volume
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Sealed
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N/a
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Vented
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33.98-118.9 liters / 1.2-4.2 cu.ft.
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Driver Volume Displaced
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184.8 cu.in. / 3 liters
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Overall Diameter
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12.38", 314.45mm
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Baffle Hole Diameter
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11.06", 280.92mm
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Front Sealing Gasket
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Fitted as standard
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Rear Sealing Gasket
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Fitted as standard
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Mounting Holes Diameter
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0.27", 6.98mm
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Mounting Holes B.C.D.
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11.69", 296.93mm
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Depth
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6.13", 155.7mm
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Net Weight
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24.2 lbs, 10.9 kg
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Shipping Weight
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26.6 lbs, 11.7 kgs
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MATERIALS OF CONSTRUCTION
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Coil Construction
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Copper voice coil
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Coil Former
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Fiberglass
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Magnet Composition
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Ferrite magnet
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Core Details
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Bumped Vented Extended core
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