Low-frequency loudspeakers
ลำโพงความถี่ต่ำรุ่น BOSE : MB12 และ MB12 WR ถูกออกแบบมาเพื่อเพิ่มเสียงเบส มีดอกลำโพงขนาด 12 นิ้ว, มีค่าตอบสนองความถี่อยู่ระหว่าง 40 Hz - 280 Hz มีระยะความถี่อยู่ที่ 36 Hz - 290 Hz และรองรับแรงขับอยู่ที่ 400 วัตต์
The MB12 and MB12 WR low-frequency loudspeakers are designed to provide bass augmentation for Bose LT arrays and other subwoofer applications. The compact 1 x 12" (305 mm) configuration allows minimal-height arrays when used with LT mid/high loudspeakers. Bose Modeler® tools and optional rigging hardware make directional bass arrays easy to design and install using MB12 loudspeakers.
Features :
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Low-frequency reinforcement for Bose® LT arrays and other subwoofer applications that require 40 - 280 Hz bass response
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Front-loaded tapered transmission line design provides peakfree extended low-frequency response, and reduces port turbulence distortion
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1 x 12" (305 mm) high-excursion woofer with 4" (102 mm) voice-coil and 400 W long-term power rating provides high SPL with fast transient response
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Compact enclosure optimized for bass-array applications when cardioid or other directional-bass configurations are required for reverberant spaces
Technical Specifications :
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Frequency Response (+/-3 dB) : 40 Hz - 280 Hz
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Frequency Range (-10 dB) : 36 Hz - 290 Hz
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Nominal Dispersion : Omni-directional below 200 Hz
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Sensitivity (SPL / 1 W @ 1 m) : 91 dB SPL
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Maximum SPL @ 1 m : 117 dB SPL (123 dB SPL peak)
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Crossover Frequency : none (external DSP crossover required)
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Recommended High-Pass Filter : 30 Hz (24 dB / octave)
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Loudspeaker EQ : Required
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Long-Term Power Handling : 400 W (1600 W peak)
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Nominal Impedance : 8 Ω