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Bose MB12 III Modular Bass Loudspeaker - White
  • Bose MB12 III Modular Bass Loudspeaker - White
  • Bose MB12 III Modular Bass Loudspeaker - White
  • Bose MB12 III Modular Bass Loudspeaker - White
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Bose MB12 III Modular Bass Loudspeaker - White

Manufacturer: Bose Corporation

Item #: BOSE-40174   •   MFG #: MB12

We are an authorized dealer for this series; however, the manufacturer does not permit online sales. Please contact a sales engineer at 1-800-522-2025 to complete your purchase.
Availability: Direct Ship From Manufacturer
Item ships directly from the manufacturer. Normal delivery time is 2-7 business days and is subject to manufacturer availability. Need it sooner? Call 800-522-2025, or email Customer Service for expedited delivery options.
  • Special Order Item: non-cancelable, non-returnable, non-refundable.
  • 2 - 7 Day Normal Delivery Time - Faster Shipping Options at Checkout or Call Us.



The Bose MB12 has a compact 1 x 12" (305 mm) configuration designed to provide bass augmentation for Bose LT arrays and other subwoofer applications. Allows minimal-height arrays when used with LT mid/high loudspeakers.


Houses of worship
Performing arts venues
Outdoor event venues

The MB12 is for indoor applications only.

  • Features

    • Low-frequency reinforcement for Boser LT arrays and other subwoofer applications that require 40 - 280 Hz bass response
    • Front-loaded tapered transmission line design provides peak-free extended low-frequency response, and reduces port turbulence distortion
    • 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
    • Compact enclosure optimized for bass-array applications when cardioid or other directional-bass configurations are required for reverberant spaces
  • Specifications

    • Frequency Response (+/-3 dB): 40 Hz - 280 Hz
    • Frequency Range (-10 dB): 36 Hz - 290 Hz
    • Nominal Dispersion: Omni-directional below 200 Hz
    • Sensitivity (SPL / 1 W @ 1 m) : 91 dB SPL
    • Maximum SPL @ 1 m: 117 dB SPL (123 dB SPL peak)
    • Crossover Frequency: none (external DSP crossover required)
    • Recommended High-Pass Filter: 30 Hz(24 dB / octave)
    • Loudspeaker EQ: Required
    • Long-Term Power Handling: 400 W (1600 W peak)
    • Nominal Impedance: 8 Ohm
    • Driver Compliment LF: 12" (305 mm) woofer with 4" (102 mm) voice-coil
    • Enclosure: Baltic birch plywood, 13-ply, 18 mm
    • Finish: Polyurethane-based textured paint, black or white
    • Grille: 16-gauge perforated steel grille with powder-coated finish
    • Environmental: Indoor use only
    • Connectors: Two (2) parallel-wired NL4 Neutrik Speakon connectors
    • Suspension / Mounting: Sixteen (16) points SAE 3/8" - 16 threaded inserts (4 each, top, bottom and sides), steel
    • Dimensions: 14.7" H x 20.0" W x 25.4" D (374 mm x 508 mm x 646 mm)
    • Net Weight: 78 lb (35.4 kg)
    • Shipping Weight: 92 lb (41.6 kg)
    • Package Contents: 1 Loudspeaker

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