MU Series Wood Speaker

MU Series Wood Speaker

The Beta Three® MU series is a series of professional speakers ideally suited for a wide range of portable and installed applications. It is highly flexible and powerful in providing very high output and dynamics with a smooth frequency response. The MU series is available in various sizes and both active and passive versions. Whether it is for music or vocal reproduction, the MU series perfectly satisfies the needs of our users.

MU12B - 12" Subwoofer
MU12B - 12" Subwoofer


12" Subwoofer

Portable and installed PA loudspeakers used in applications including sound reinforcement in Houses of Worship, Events, Clubs, Rehearsal Halls and Ballrooms etc. The MU Series delivers extraordinary performance at unmatched value. 


  • High output SPL and sensitivity
  • 1 x 12” high power transducer with 75mmm voice coil
  • 1 x 3” compression driver
  • 90º x 40º coverage pattern
  • 2 x NL4 connectors
  • Computer aided design to optimise frequency and phase response
  • Cabinet design for FOH use
  • Suitable for use as a main system with or without sub speaker augmentation
  • Portable system (stand), or permanent installation (wall, ceiling, under balcony)
  • Adjustable flying track on the top and bottom of the speaker
  • Arrays with MU12B, MU12Ba, MU18B and MU18Ba high power sub speakers for extended low frequency, high quality music reproduction
  • Powder coated grill with foam backing
  • Durable Polyurethane textured base paint
  • 1 x NL4 connector included in packaging


Acoustical specifications
Frequency Response(-3db):
Max SPL @ 1m:
1 x 12" Woofer
Input/Output section
Input Connectors:
2 x NL4 (one input, one output)
Sensitivity (1W @ 1m):
Power section
Total Power:
300W(RMS); 600W(MUSIC); 1200W(PEAK);
Nominal Impedance (Ohm):
Physical specifications
Cabinet/Case Material:
15mm birch plywood
2 x Wooden handles
Polyurethane-based painting. Steel grille is coated by dots to provide strong ultra-Weatherability
Dimension (W x D x H):
460 x 452 x 370mm / (18.1 x 17.8 x 14.6in)
Package Dimensions (W x D x H):
550 x 550 x 470mm / (21.7 x 21.7 x 18.5in)
Net Weight:
17 kg / 37.5 lb
Gross Weight:
19 kg / 41.9 lb

MU12B Application

    MU12B Installation

      MU12B Parts

        MU12B Cases

          MU12B Collocation



              MU12Bβ3 MU12B Datasheet 1.0MU12B  200KB 2022-07-05 23:56:32
              β3_MU12B_PA_Chinese_Manualβ3_MU12B_PA_Chinese_Manual 1β3_MU12B_PA_Chinese_Manual  846KB 2018-07-12 02:25:39
              β3_MU12B_PA_English_Manualβ3_MU12B_PA_English_Manual 1β3_MU12B_PA_English_Manual  606.16KB 2018-07-12 02:25:39