The Eminence Impero 18A 18" high power pro audio speaker is optimized for use in vented enclosures. Its 1,200 watt continuous power rating is a result of Eminence's extensive experience designing and manufacturing loudspeaker drivers for serious professional use.
Ultra-high power handling capacity guarantees long-term durability
4" diameter copper voice coil on fiberglass former
Weather-resistant paper cone and dust cap, treated cloth edge
Die cast basket is light yet strong, ready to handle rough travel
Massive, optimized motor structure helps move serious volumes of air
Capable of sustaining thunderous levels of sub-bass
Hand built in the USA
Power Handling (RMS)1,200 Watts
Power Handling (max)2400 Watts
Frequency Response39 to 820 Hz
Sensitivity95.9 dB 1W/1m
Voice Coil Diameter4"
Magnet Weight109 oz.
Resonant Frequency (Fs)33 Hz
DC Resistance (Re)5.41 ohms
Voice Coil Inductance (Le)1.47 mH
Mechanical Q (Qms)14.02
Electromagnetic Q (Qes)0.44
Total Q (Qts)0.43
Compliance Equivalent Volume (Vas)11.20 ft.Â³
Mechanical Compliance of Suspension (Cms)0.17 mm/N
BL Product (BL)18.90 Tm
Diaphragm Mass Inc. Airload (Mms)140g
Maximum Linear Excursion (Xmax)8 mm
Surface Area of Cone (Sd)1159 cmÂ²
Materials of Construction
Cone MaterialTreated Paper
Voice Coil Wire MaterialCopper
Voice Coil FormerFiberglass
Basket / Frame MaterialCast Aluminum
Overall Outside Diameter18"
Baffle Cutout Diameter16.56"
# Mounting Holes8
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)