Eminence SIGMA PRO 18-A2 PA Bass Speaker (1300 Watts, 18")

The Eminence Sigma Pro 18A-2 is a high power (650-watt continuous EIA, 1300-watt Music Program), 18" sub bass/sub-woofer speaker designed for vented cabinets. The Sigma Pro-18A-2 is very efficient with high sensitivity (99dB) and delivers floor shaking sound levels throughout its operating range (41Hz-2.4kHz) making it an exceptional choice for DJ and front of house sound systems. Features include a rugged cast aluminum frame and vented core for efficient heat dissipation, and a huge 120-ounce magnet and 8 Ohms rating plus a seven year warranty against factory defects.

Same Day Music is an authorized dealer of Eminence products.

- Nominal Basket Diameter: 18", 457.2 mm
- Nominal Impedance*: 8 ohms
- Power Rating
- Watts: 650 watts
- Music Program: 1300 watts
- Resonance: 28Hz
- Usable Frequency Range: 41Hz - 2.4kHz
- Sensitivity: 99dB
- Magnet Weight: 120 oz.
- Gap Height: 0.37", 9.53 mm
- Voice Coil Diameter: 3", 76.2 mm
- THIELE & SMALL PARAMETERS
- Resonant Frequency (fs): 28Hz
- DC Resistance (Re): 6.29
- Coil Inductance (Le): 1.9mH
- Mechanical Q (Qms): 8.28
- Electromagnetic Q (Qes): 0.3
- Total Q (Qts): 0.29
- Compliance Equivalent Volume (Vas): 15.6-cubic feet
- Peak Diaphragm Displacement Volume (Vd): 695cc
- Mechanical Compliance of Suspension (Cms): 0.24mm/N
- BL Product (BL): 22.1 T-M
- Diaphragm Mass Inc. Airload (MMs): 130 grams
- Efficiency Bandwidth Product (EBP): 93
- Maximum Linear Excursion (Xmax): 6.1 mm
- Surface Area of Cone (Sd): 1140 cm2
- Maximum Mechanical Limit (Xlim): 18 mm
- MOUNTING INFORMATION
- Recommended Enclosure Volume
- Sealed: N/a
- Vented: 93-212 liters / 3.3 - 7.5-cubic feet
- Driver Volume Displaced: 403.9-cubic inches
- Overall Diameter: 18", 457.2 mm
- Baffle Hole Diameter: 16.56", 420.5 mm
- Front Sealing Gasket: Fitted as standard
- Rear Sealing Gasket: Fitted as standard
- Mounting Holes Diameter: 0.28", 7.1 mm
- Mounting Holes B.C.D.: 17.25", 438.2 mm
- Depth: 8.15", 207 mm
- Net Weight: 24.5 lbs, 11.1 kg
- Shipping Weight: 28.1 lbs, 12.8 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

Same Day Music is an authorized dealer of Eminence products.

Shipping Weights and Dimensions

Shipping Weight: 28 lbs

Shipping Dimensions: 21 x 20 x 9 in