All the models, except the CX12N351, feature a 2.5" voice coil combined with a fibreglass former and aluminium wire that drives the mid-bass cone with high efficiency and a good extension.
The 1.75" dome compression driver loaded to a conical waveguide, provides a clear vocal output and a "perfect high frequency extension".
The mid-bass section of the CX12N351 features a 3.5" inside/outside voice coil design that provides high power handling. Thanks to an integrated demodulation ring, the mid bass section gets a fasttime response and lower distortion. The compression driver uses a 2.5" diaphragm with a 1.4" throat. The diaphragm and suspension are formed from a 0.05 mm pure titanium. It is powered from an integrated high power neodymium magnetic structure that promises high dynamic and sensitivity for both components.
The new coaxial transducers are billed as a lightweight solution for vocal applications, stage monitoring, compact two-way reflex enclosures and designs where a constant radial directivity pattern is a requirement.
The new low frequency neodymium transducers are designed for any professional audio application. The new hyper vented system developed for these woofers and mid-bass is the result of a complex combination of ventings in the voice coil former, in the magnetic assembly and in the woofer basket that guarantees the best thermal dissipation without the need for extra fans. In fact, thanks to the large excursion of the cone, the great amount of air generated is directed through the holes creating a very high level of turbolence that keeps the transducer cooler.
The silicon structure of the suspension avoids deformations, ensuring the best efficiency even after a long period of extensive use. For all the models, the basket shape has been specifically designed to maximize the advantages of the neodymium, resulting in an optimized weight compared to the size. Thanks to this accurate study, RCF's Engineers have been able to obtain the lightest 4" voice coil LF transducers on the market: the MB12N407 and the MB15N407.
(Jim Evans)
