18 Sound 12NLW9300 12" Neodymium Bass SpeakerSpecifications: Size: 12"
Power Rating: 800W RMS
Frequency Response: 45-6kHz
Impedance: 8 ohms
Voice Coil: 4"
Resonant Frequency: 40 Hz
Weight: 15.45 lbs.
The 12NLW9300 is a high performance low frequency neodymium loudspeaker. It is intended mainly as woofer for two way systems and works extremely well in compact vented enclosures (30 - 70 lit). The neo magnet external assembly assures high flux concentration, low power compression and excellent heat exchange. The external magnet configuration is considerably more efficient than the traditional under-pole magnet topology. This allows to obtain high levels of force factor and power handling with a power to weight ratio at the upper level.
The heatsink has been specifically studied according to F.E.A. simulators, improving the necessary heat transfer to the dissipative structure. The direct contact between the heat sink and the specially designed basket, together with the magnetic structure, represents a fundamental improvement in heat dissipation, increasing power handling capabilities and lowering power compression figure.
A state-of-the-art Interleaved Sandwich Voice coil (ISV) voice coil provides high levels of thermal stability and durability. The ISV technology is based on a high strength fiberglass former with half the coil wound on the outside and half on the inside ensuring uniform thermal dissipation on both sides, bonded together using unique high- temperature resin adhesives achieving a balanced and solid linear motor unit.
The 12NLW9300 performances are further improved by the use of Double Demodulation Rings (DDR), designed to reduce dramatically the intermodulation and harmonic distortion whilst improving the transient response.
The 12NLW9300 design features a dedicated exclusive Carbon fibre reinforced straight ribbed cone; the pulp formulation contains special damping fibres and is further treated in-house with a proprietary resin compound in order to increase the cone bend performances 5 times more than traditional celluloses pulp and twice than glass fibre added pulps. The result is a very linear piston action across the entire working range minimizing the destroying breaking modes.
The coating of both the face and back plates is far more resistant to the corrosive effects of salts and oxidization than any other treatment normally in use.
More information here.