Product Description
The Eminence Sigma Pro 18A-2 is a high-performance 18-inch woofer engineered for professional audio applications requiring deep, tight bass and reliable power handling. Designed for vented enclosures, this woofer delivers 650W RMS / 1300W program power, a wide frequency range from 41 Hz to 2.4 kHz, and high sensitivity for efficient power-to-output performance.
Built with a durable paper cone, 3-inch voice coil, and robust ferrite magnet, the Sigma Pro 18A-2 ensures consistent, distortion-free low-end for PA systems, live sound setups, DJ rigs, and subwoofer enclosures.
Features
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18" high-performance woofer for deep, punchy bass
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650W RMS / 1300W program power handling
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8-ohm impedance for versatile system integration
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Frequency range: 41 Hz – 2.4 kHz for optimal low-end response
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Sensitivity: 99 dB for efficient power-to-output conversion
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Ferrite magnet with 120 oz. weight for enhanced low-frequency performance
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Durable paper cone and steel frame for long-term reliability
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3-inch voice coil for superior heat dissipation and durability
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Designed specifically for vented enclosures to maximize bass output
Specifications
Electrical
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Nominal Impedance: 8 Ω
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Power Handling: 650W RMS / 1300W Program
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Frequency Response: 41 Hz – 2.4 kHz
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Sensitivity: 99 dB
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Voice Coil Diameter: 3"
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Magnet Weight: 120 oz
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Gap Height: 0.37"
Mechanical
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Basket Type: Sturdy steel frame
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Cone Material: Paper
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Surround: Cloth edge
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Dust Cap: Paper
Mounting
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Designed for 18" vented enclosures
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Standard mounting dimensions for professional PA cabinets
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