- Nominal Basket Diameter: 18", 457.2mm
- Nominal Impedance: 8 ohms

Power Rating:
- Watts 1600W
- Music Program 1600W

- Resonance: 25Hz
- Usable Frequency Range: 40Hz-800Hz
- Sensitivity: 97
- Magnet Weight: 109 oz.
- Gap Height: 0.375", 9.53mm
- Voice Coil Diameter: 4", 101.6mm

MPN: OMEGA PRO-18A
UPC: 876358000425

THIELE & SMALL PARAMETERS
- Resonant Frequency (fs): 25Hz
- DC Resistance (Re): 5.20
- Coil Inductance (Le): 1.67mH
- Mechanical Q (Qms): 8.18
- Electromagnetic Q (Qes): 0.32
- Total Q (Qts): 0.31
- Compliance Equivalent Volume (Vas): 548.7 liters / 19.4 cu.ft.
- Peak Diaphragm Displacement Volume (Vd): 556cc
- Mechanical Compliance of Suspension (Cms): 0.29mm/N
- BL Product (BL): 18.8 T-M
- Diaphram Mass inc. Airload (Mms): 138 grams
- Efficiency Bandwidth Product (EBP): 79
- Maximum Linear Excursion (Xmax): 4.8mm
- Surface Area of Cone (Sd): 1159.0 cm2
- Maximum Mechanical Limit (Xlim): 16.0mm


MOUNTING INFORMATION

Recommended Enclosure
- Sealed
- Vented 96-198 liters/ 3.4-7 cu.ft.

- Overall Diameter 18", 457.2mm
- Baffle Hole Diameter 16.56", 420.5mm
- Front Sealing Gasket fitted as standard
- Rear Sealing Gasket fitted as standard
- Mounting Holes Diameter 0.28", 7.1mm
- Mounting Holes B.C. D. 17.25", 438.2mm
- Depth 8.15", 207mm
- Net Weight 25.2 lbs., 11.4 kg
- Shipping Weight 28.9 lbs., 13.1 kg


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
- Dustcap Composition: Solid composition paper dust cap