Eminence Omega Pro 18 PA Speaker (800 Watts, 18 in.)

The Omega Pro 18 is designed for all high power bass applications. It has a 4 in. polyamide-imide coated 2-layer 27 ga. copper voice coil, kapton coil former, 109 oz. ferrite magnet, vented and extended core, paper cone with cloth edge, and a paper dust cap. It is only available in 8 ohms.

Features:

Kapton coil former for increased rigidity and thermal protection

Polyamide-imide coated 2-layer, 27ga., copper voice coil for improved power handling and durability

Ferrite Magnet

Vented and extended core for increased power handling

Die-cast aluminum basket for rigidity

Paper cone

Cloth cone edge

Solid composition paper dust cap

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Technical Info

Nominal Basket Diameter: 18 in., 457.2mm

Impedance: 8W

Power Rating: 800Wrms

Resonance: 28Hz

Usable Frequency Range: 25Hz - 2kHz

Magnet Weight: 109oz.

Gap Height: 0.375 in., 9.52mm

Voice Coil Diameter: 4.0 in., 101.6mm

Mounting Information

Recommended Enclosure Volume (vented): 62 - 82 liters 2.2 - 2.9 cu. ft.

Overall Diameter: 18 in., 457.2mm

Baffle Hole Diameter: 16.56 in., 420mm

Front Sealing Gasket: fitted as standard

Rear Sealing Gasket: fitted as standard

Mounting Holes Diameter: 0.25 in., 6.4mm

Mounting Holes B.C.D.: 17.25 in., 438.2mm

Depth: 8.15 in., 207mm

Shipping Weight: 30lbs., 13.6 kg.

Thiele-Small Parameters

Resonant Frequency (fs): 28Hz

Impedance (Re): 5.1W

Coil Inductance (Le): 1.67mH

Electromagnetic Q (Qes): 0.25

Mechanical Q (Qms): 5.53

Total Q (Qts): 0.24

Compliance Equivalent Volume (Vas): 354 liters 12.49 cu. ft.

Peak Diaphragm Displacement Volume (Vd): 635cc

Mechanical Compliance of Suspension (Cms): 0.19mm/N

BL Product (BL): 25 T-M

Diaphragm Mass inc. Airload (Mms): 171 grams

Equiv. Resistance of Mechanical Suspension Loss (Rms): 5.46N*sec/M

Efficiency Bandwidth Product (EBP): 114

Voice Coil Overhang (Xmax): 4.8mm

Surface Area of Cone (Sd): 1159cm2

Impedance at Resonance (Zmax): 97 ohmd

Maximum Mechanical Limit (Xmech): 32.0mm

Eminence response curves are measured under the following controlled test conditions:

All speakers are tested at 1W/1m using a variety of test set-ups for the appropriate impedance

LMS using 0.25 in. supplied microphone (software calibrated) mounted 1m from wall/baffle

2ft. X 2 ft. baffle is built into the wall with the speaker mounted flush against a steel ring for minimum defraction

Hafler P1500 Trans-Nova amplifier

2700 cu. ft. chamber with fiberglass on all 6 surfaces (three with custom-made wedges)