18s 12NMB1000 8 Ohm

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.