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12mb1000
Alternative/Current Model:
12NMB1000

Features

  • 102 dB SPL 1W / 1m average sensitivity
  • 100 mm (4 in) Interleaved Sandwich ISV copper voice coil
  • 600 W AES power handling
  • Excellent transient response
  • Very low power compression
  • Improved heat dissipation via unique basket design
  • Ideal for direct radiating or horn loaded midbass systems
The 12MB1000 is a very high performance 12" midbass driver. It offers high power handling
capability with exceptional sensitivity over the midbass frequency range. It can be used with
either direct radiating or horn loaded applications, as well as part of a 2 or 3-way system. It is
ideally used in stage monitor, auditorium, touring and outdoor systems. The smooth curvilinear
paper cone has a special high strength wood pulp composition designed to achieve the best
possible linearity within the middle frequency range and to control bell-mode resonances
around the cone. The cone is carried by a double half-roll suspension, which is more resistant to
aging and fatigue than traditional materials, and provides the correct dampening and excursion
control. The state-of-the-art voice coil employs our Interleaved Sandwich Voice coil (ISV)
technology, in which a high strength fiberglas former carries windings on both the outer and
inner surfaces. By mean of a balanced coil with uniform distribution of mass and motive energy,
this technology assures an extremely linear motor assembly. The voice coil cooling has been
achieved by incorporating airways between the chassis back plate and the top plate of the
magnet which allow heated air from the voice coil and gap to be channeled away and dissipated
by the chassis basket. This technology is the result of a meticulous design exercise using a
sophisticated in-house 3D CAD facility. The magnetic structure has also been optimized using
our in-house FEA CAD resource to maximize flux density in the voice coil gap. Eighteen Sound
R&D has developed a special cone treatment specifically dedicated to improve the dampening
properties of the moving assembly, thus considerably improving the transient response control.
This treatment also gives water repellent properties to the cone, enabling the 12MB1000 to be
used in humid environments without damage.

Specifications

Design

Parameters

Mounting and Shipping Info

  • Nominal Impedance8 Ω
  • Minimum Impedance7.2 Ω
  • Nominal Power Handling1600 W
  • Continuous Power Handling2800 W
  • Sensitivity3102.0 dB
  • Frequency Range80 - 3500 Hz
  • Voice Coil Diameter100 mm (4.0 in)
  • Surround ShapeM-roll
  • Cone ShapeCurvilinear
  • Magnet MaterialFerrite
  • Woofer Cone TreatmentWeather protected
  • Recommended Enclosure30.0 dm3 (1.06 ft3)
  • Recommended Tuning65 Hz
  • Resonance Frequency54 Hz
  • Re5.8 Ω
  • Qes0.2
  • Qms6.0
  • Qts0.18
  • Vas60.0 dm3 (2.12 ft3)
  • Sd531.0 cm2 (82.31 in2)
  • Xmax2.5 mm
  • Mms55.5 g
  • Bl23.5 Txm
  • Le1.46 mH
  • EBP270 Hz
  • Overall Diameter315 mm (12.4 in)
  • Bolt Circle Diameter298 mm (11.73 in)
  • Baffle Cutout Diameter282.0 mm (11.1 in)
  • Depth118 mm (4.67 in)
  • Flange and Gasket Thickness16 mm (0.65 in)
  • Net Weight9.6 kg (21.16 lb)
  • Shipping Weight10.3 kg (22.71 lb)
  • 2 hours test made with continuous pink noise signal within the range Fs-10Fs. Power calculated on rated nominal 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.