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Eminence IMPERO 12A

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Eminence IMPERO 12A (Eminence IMPERO12A)

Pro Series 12" Raw Woofer

High power driver recommended for pro audio in vented enclosures. Ideal for two-way top boxes, full-range two-way boxes, bass guitar boxes, and small subwoofers.

Nominal Basket Diameter 12", 304.8mm
Nominal Impedance* 8 ohms
Power Rating**
Watts 1100W
Music Program 2200W
Resonance 42.75Hz
Usable Frequency Range 56Hz - 3kHz
Sensitivity*** 93dB
Magnet Weight 109 oz.
Gap Height 0.5", 12.7mm
Voice Coil Diameter 4", 101.6mm

Thiele & Small Parameters
Resonant Frequency (fs) 42.75Hz
DC Resistance (Re) 5.58
Coil Inductance (Le) 1.46mH
Mechanical Q (Qms) 13.84
Electromagnetic Q (Qes) 0.33
Total Q (Qts) 0.32
Compliance Equivalent Volume (Vas) 70.2 liters / 2.48 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 339.4cc
Mechanical Compliance of Suspension (Cms) 0.17mm/N
BL Product (BL) 19.49 T-M
Diaphragm Mass Inc. Airload (MMs) 83.47 grams
Efficiency Bandwidth Product (EBP) 129.8
Maximum Linear Excursion (Xmax) 6.22mm
Surface Area of Cone (Sd) 545.4 cm2
Maximum Mechanical Limit (Xlim) 12.5mm

Mounting Information
Recommended Enclosure Volume
Sealed N/a
Vented 33.98-118.9 liters / 1.2-4.2 cu.ft.
Driver Volume Displaced 184.8 cu.in. / 3 liters
Overall Diameter 12.38", 314.45mm
Baffle Hole Diameter 11.06", 280.92mm
Front Sealing Gasket Fitted as standard
Rear Sealing Gasket Fitted as standard
Mounting Holes Diameter 0.27", 6.98mm
Mounting Holes B.C.D. 11.69", 296.93mm
Depth 6.13", 155.7mm
Net Weight 24.2 lbs, 10.9 kg
Shipping Weight 26.6 lbs, 11.7 kgs

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