Q-SYS SB-7118 Single 18-inch 700-Watt Cinema Subwoofer

Q-SYS SB-7118 Single 18-inch 700-Watt Cinema Subwoofer

The Q-SYS SB-7118 Cinema Subwoofer is a powerful and precise solution for digital motion picture soundtracks. Equipped with a high-excursion 18-inch low-frequency transducer in a ported enclosure, it delivers rich bass that extends to the lowest audible frequencies. Engineered specifically for cinema use, the custom 18-inch transducer features a 4-inch voice coil and vented pole pieces for cool operation, ensuring durability and reduced power compression even at high drive levels. The enclosure is crafted from premium MDF panels with large radiused ports, which eliminate turbulence noise at higher outputs. The symmetrical port design ensures even pressure distribution, stabilizing the woofer for optimal performance in demanding cinema environments.

Features:

• 750 W, 18-inch transducer with high-efficiency design
• Frequency range extends below 25 Hz with appropriate B6 filter
• Compatible with optional DCM and SF-3 signal processors
• Vandal-resistant woofer mounting bolts for enhanced security

Specifications:

• Frequency Range: (-6 dB, Half space) 22–100 Hz; (-10 dB, Half space) 19–250 Hz
• Maximum Output: 125 dB (Calculated Continuous)
• Impedance: 8 ohms nominal
• Maximum Input Power: 600 W continuous; 750 W continuous; 1200 W maximum
• Sensitivity: 98 dB at 2.83 V, 1 meter, half space
• Transducers: 18-inch (457 mm), 700 W high-efficiency subwoofer with 4-inch (100 mm) copper voice coil on Kapton former
• Recommended Processing: LF boost at 25 Hz, Q = 2.0, Gain = +6 dB via QSC, SF-3, or DCM
• Connectors: Barrier strip screw terminals (supports up to #10 AWG stranded wire)
• Enclosure: B6 alignment vented, MDF construction, tuned to 25 Hz with symmetrical port design
• Dimensions: 30” x 35.75” x 20.3” (908 x 762 x 516 mm)
• Weight: 162 lb (73.3 kg)