For low-frequency response at high sound pressures:

• Gymnasiums
• Ice Rinks
• Arenas
• Churches
• Bars & Nightclubs
• Where enhanced low-frequency response is required at high sound pressure levels.

The Q-SB2 is Soundsphere's largest loudspeaker, designed for installations requiring enhanced low-frequency response at high sound pressure levels. Applications include gymnasiums, ice rinks, arenas, churches, bars and nightclubs.

The Q-SB2 offers high power handling capability (800W/4 ohms), high sensitivity (99dB 1W/1m) and high SPL capability (128dB 800W/1m). Both standard and custom colors are available.

Spec Sheet Download


Sensitivity 99dB SPL 1W/1m
Maximum SPL 128dB SPL; 800W/1m
Power Handling 800 Watts RMS
Frequency Response 40Hz to 200Hz ± 6dB
Recommended Crossover Frequency 150Hz, 18dB/octave
Coverage 360° vertical, 360° horizontal
Rated Impedance 4 ohms
Weight 82 lbs. (37.2 kg)
Shipping Weight 99 lbs. (44.9 kg)
Dimensions 32" (813mm) diameter sphere
Driver 2 x 18"
Connector Neutrik® Speakon® NL4MPR receptacle, mating connector (Neutrik® Speakon® NL4FC) supplied
Material Enclosure is fiberglass with gelcoat finish; plated steel hardware
Accessories Electronic crossover, Model Q-CX