Eminence Omega 18A 8 ohm
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| SPECIFICATION |
| Nominal Basket Diameter |
18", 457 mm |
| Nominal Impedance* |
8 Ω |
| Power Rating** |
| Watts |
800 W |
| Music Program |
1600 W |
| Resonance |
25 Hz |
| Usable Frequency Range |
40 Hz - 0.8 kHz |
| Sensitivity*** |
97 dB |
| Magnet Weight |
109 oz. |
| Gap Height |
0.375", 9.5 mm |
| Voice Coil Diameter |
4", 102 mm |
| THIELE & SMALL PARAMETERS |
| Resonant Frequency (fs) |
25 Hz |
| DC Resistance (Re) |
5.2 Ω |
| Coil Inductance (Le) |
1.67m H |
| Mechanical Q (Qms) |
8.18 |
| Electromagnetic Q (Qes) |
0.32 |
| Total Q (Qts) |
0.31 |
| Compliance Equivalent Volume (Vas) |
548.7 liters / 19.38 cu.ft. |
| Peak Diaphragm Displacement Volume (Vd) |
556 cc |
| Mechanical Compliance of Suspension (Cms) |
0.29 mm/N |
| BL Product (BL) |
18.8 T-M |
| Diaphragm Mass Inc. Airload (MMs) |
137 grams |
| Efficiency Bandwidth Product (EBP) |
79 |
| Maximum Linear Excursion (Xmax) |
4.8 mm |
| Surface Area of Cone (Sd) |
1159 cm2 |
| Maximum Mechanical Limit (Xlim) |
16.0 mm |
| MOUNTING INFORMATION |
| Recommended Enclosure Volume |
| Sealed |
N/a |
| Vented |
96.00-198.00 liters / 3.40-7.00 cu.ft. |
| Driver Volume Displaced |
0.234 cu.ft. / 6.62 liters |
| Overall Diameter |
18", 457.2 mm |
| Baffle Hole Diameter |
16.56", 420.6 mm |
| Front Sealing Gasket |
Yes |
| Rear Sealing Gasket |
Yes |
| Mounting Holes Diameter |
0.28", 7.1mm |
| Mounting Holes B.C.D. |
17.25", 438.2mm |
| Depth |
8.15", 207 mm |
| Net Weight |
25.2 lbs, 11.43 kg |
| Shipping Weight |
28.9 lbs, 13.11 kgs |
| MATERIALS OF CONSTRUCTION |
| Coil Construction |
Copper voice coil |
| Coil Former |
Polyimide former |
| Magnet Composition |
Ferrite magnet |
| Core Details |
Vented and extended core |
| |
|
| Basket Materials |
Die-cast aluminum basket |
| Cone Composition |
Paper cone |
| Cone Edge Composition |
Cloth cone edge |
| Dust Cap Composition |
Solid composition paper dust cap |
|
