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Behringer ST2400 Ceiling Speaker Features:
•    Cutting-Edge Engineering - High performance 4” coaxial driver in a ported bass reflex design with a sealed enclosure to ensure optimum low frequency response. Standard 8” (200mm) depth for common ceiling space installations.
•    Maximum Coverage and Power - 150° nominal dispersion with a 50 Watt RMS power handling capacity and integral 30-Watt 70/100 V matching transformer.
•    Diverse Functionality - 4-position rotary power select switch offers access to power taps at 70/100 V plus direct 8-Ohm Low Impedance drive mode with a switchable High-Pass filter which allows full range operation or satellite mode when used with subwoofer.
•    Superior Protection - Built in crossover and driver protection.
•    Unique Aesthetic Design - Detachable full face powder coated steelgrill with foam backing extends to subtle metalized edge trim.
•    Secure Installation - Injection molded ported plastic bezel and azinc coated steel back-can with three mounting clamps and extruded plasticguide tubes which deploy to secure the speaker to the ceiling material.
•    Outstanding Safety Ratings - UL1480 and UL2043 Rated and compliant with all applicable safety codes.
Behringer ST2400 Ceiling Speaker Specifications:
•    Frequency range (-10 dB): 75 Hz - 20 kHz
•    Frequency response (-3 dB): 100 Hz - 20 kHz
•    Power handling (pink noise): 30 W
•    Max. power handling: 60 W
•    Sensitivity: 87 dB, 1 W @ 1 m, 1/2 space
•    Nominal dispersion: 150°
•    Directivity factor (Q): 5.2 averaged 500 Hz to 4 kHz
•    Directivity factor (DI): 6.1 averaged 500 Hz to 4 kHz
•    Crossover frequency: 3 kHz
•    Nominal impedance: 8 O
•    Maximum SPL (low impedance): 105 dB @ 1 m