The 12NMB1000 is a state of the art 12" midbass driver. Born from the best selling ceramic brother (12MB1000) It offers extreme power handling capability with exceptional sensitivity over the midbass frequency range in a very light weight package. 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 M-roll suspension, that provides amazing 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 12NMB1000 to be used in humid environments without damage.
Mounting and Shipping Info
Nominal Diameter300 mm ( in)
Nominal Impedance8 Ω
Minimum Impedance5.7 Ω
Nominal Power Handling1600 W
Continuous Power Handling21200 W
Frequency Range60 - 3000 Hz
Voice Coil Diameter100 mm (4.0 in)
Woofer Cone TreatmentWeather protected
Recommended Enclosure30.0 dm3 (1.06 ft3)
Recommended Tuning65 Hz
Resonance Frequency54 Hz
Vas58.0 dm3 (2.05 ft3)
Sd531.0 cm2 (82.31 in2)
Maximum Excursion5.9 mm
Overall Diameter315 mm (12.4 in)
Bolt Circle Diameter298 mm (11.73 in)
Baffle Cutout Diameter282.0 mm (11.1 in)
Depth116 mm (4.59 in)
Flange and Gasket Thickness18 mm (0.71 in)
Net Weight5.6 kg (12.35 lb)
Shipping Weight5.9 kg (13.01 lb)
Shipping Box332 x 332 x 184 mm (13.07x13.07x7.24 in)
2 hours test made with continuous pink noise signal within the range Fs-10Fs. Power calculated on rated minimum 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.