Beyma 12MI100 12" 450 Watt AES 8 ohm Mid-bass/midrange Speaker

SKU: Be12mi100

MFR: 12mi100

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Beyma 12MI100 12" 450 Watt AES 8 ohm Mid-bass/midrange Speaker

The low-mid frequency Beyma 12MI100 transducer offers three main points of interest: a high efficiency (5.1 %), an extremely linear frequency response and a low harmonic distortion. These characteristics make it suitable for high quality sound reinforcement systems, especially for live applications. Moreover, its versatile design allows it to be used as the low-mid loudspeaker in a two ways system or as an strictly mid-frequency transducer in a three ways system. Beyond its frequency response advantages, this loudspeaker offers more: it takes profit of the improvements achieved in our low frequency-high power transducers. Thus, it incorporates a high quality voice coil and a large magnetic assembly to provide efficient heat dissipation. Thanks to this design concept of strongness, the 12MI100 reaches a considerable power handling (450 WAES).


  • Very high efficiency (5.1 %)
  • Extremely linear frequency response
  • Low harmonic distortion
  • 3' edgewound aluminium voice coil with polyimide fiber glass former
  • Large magnetic assembly to provide efficient heat dissipation
  • Designed for high quality mid-frequency reproduction


  • Voice coil: edgewound aluminium wire with high temperature bonding strength. Polyimide fiber glass former able to withstand high temperatures.
  • Cone: light and stiff paper cone to provide good mid- frequency response.
  • Surround: treated cloth to mechanically equalize the frequency response.
  • Spider: cotton spider.
  • Metal parts: anti-corrosion coated back plate designed to resist aggressive environmental conditions.
  • Basket: specially designed die cast aluminium basket to avoid disturbing resonances.
  • Magnet: high Curie temperature ferrite
Technical Specifications
Nominal Diameter 300 mm. / 12 in
Rated impedance 8 ohms
Minimum impedance 8 ohms
Power capacity 450 w AES
Program power 900 w

100 dB 2.83v @ 1m @ 2Π

Frequency range40 - 4000 HzRecom. enclosure vol.20 / 50 l 0.7 / 1.75 ft.3Voice coil diameter77 mm. 3 in.Magnetic assembly weight6.5 kg. 14.2 lb.BL factor21.6 N / AMoving mass0.047 kgVoice coil length13.5 mmX damage (peak to peak)24 mmAir gap height10 mmThiele-Small Parameters Resonant frequency, fs58 HzD.C. Voice Coil Resistance, Re6.3 ohmsMechanical Quality Factor, Qms5.54Electrical Quality Factor, Qes0.23Total Quality Factor, Qts0.22Equivalent Air Volume to Cms, Vas64 LMechanical Compliance, Cms163 µm / NMechanical Resistance, Rms3.3 kg / sEfficiency (%)5.1Effective Surface Area, Sd (m2)0.0530 m2Maximum Displacement, Xmax2 mmDisplacement Volume, Vd105 cm3Voice Coil Inductance, Le @ 1 kHz1 mHMoutning Information Overall diameter312 mm12.3 inBolt circle diameter294.5 mm 

11.6 in


Baffle cutout diameter:
- Front mount

277.5 mm10.9 in.- Rear mount280 mm11.02 in.Depth139 mm5.47 inVolume displaced by driver5.5 l0.19 ft.3Net weight7.2 kg15.8 lbShipping weight8 kg17.6 lb