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Limited Distribution

12MH888

LF Drivers 12.0 inches

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Continuous power handling
Voice coil diameter
Magnet material
Limited Distribution Product
US only - Contact Thunderball Marketing 
for more information.
 
 
 

Features

  • 700 W continuous program power capacity
  • 76 mm (3 in) aluminum voice coil
  • 55 - 5000 Hz response
  • 100 dB sensitivity
  • Aluminum demodulating ring allows a very low distortion figure

Specifications

  • Nominal Diameter320 mm (12.0 in)
  • Nominal Impedance8 Ω
  • Minimum Impedance6.3 Ω
  • Nominal Power Handling1350 W
  • Continuous Power Handling2700 W
  • Sensitivity3100.0 dB
  • Frequency Range55 - 5000 Hz
  • Voice Coil Diameter76 mm (3.0 in)
  • Winding MaterialAluminum
  • Former MaterialGlass Fibre
  • Winding Depth16.0 mm (0.63 in)
  • Magnetic Gap Depth8.0 mm (0.31 in)
  • Flux Density1.45 T

Design

  • Surround ShapeAccordion
  • Cone ShapeRadial
  • Magnet MaterialFerrite
  • SpiderSingle
  • Pole DesignT-Pole
  • Woofer Cone TreatmentNone

Parameters4

  • Resonance Frequency53 Hz
  • Re5.0 Ω
  • Qes0.22
  • Qms5.6
  • Qts0.21
  • Vas76.0 dm3 (2.68 ft3)
  • Sd522.0 cm2 (80.91 in2)
  • η₀4.82 %
  • Xmax6.0 mm
  • Xvar7.0 mm
  • Mms46.0 g
  • Bl18.6 Txm
  • Le0.57 mH
  • EBP240 Hz

Mounting and Shipping Info

  • Overall Diameter316 mm (12.44 in)
  • Bolt Circle Diameter296 mm (11.6 in)
  • Baffle Cutout Diameter282.0 mm (11.1 in)
  • Depth135 mm (5.31 in)
  • Flange and Gasket Thickness14 mm (0.55 in)
  • Air Volume Occupied by Driver3.3 dm3 (0.12 ft3)
  • Net Weight7.4 kg (16.31 lb)
  • Shipping Units1
  • Shipping Weight8.3 kg (18.3 lb)
  • Shipping Box360x360x200 mm (14.17x14.17x7.87 in)

Service Kit

  • 2 hours test made with continuous pink noise signal within the range Fs-10Fs. Power calculated on rated minumum impedance. Loudspeaker in free air.
  • Power on Continuous Program is defined as 3 dB greater than the Nominal rating.
  • Applied RMS Voltage is set to 2.83 V for 8 ohms Nominal Impedance.
  • Thiele-Small parameters are measured after a high level 20 Hz sine wave preconditioning test.
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