Eighteen Sound ships coaxial models

Eighteen Sound ships coaxial models

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Eighteen Sound has added the 8CX650 and 10CX650 to its family of coaxial loudspeakers, featuring ferrite motors to provide extended LF. The 8- and 10-inch models exert a nominal dispersion of 90-degrees, whilst the 2.5-inch LF copper voice-coil employs the Italian manufacturer’s Interleaved Sandwich Voice coil (ISV) technology, reportedly resulting in a linear motor assembly.

Both models employ 1.75-inch diameter HF diaphragms. Additionally, the 8CX650 is Atmos compatible while both loudspeakers have been designed for use in compact reflex enclosures and stage monitors. Comprising a ceramic single magnet structure, the 8CX650 and 10CX650 weigh 5.5kg and 6kg respectively.

The loudspeakers are also equipped with a proprietary hybrid radial tangerine phase plug, while the integrated HF compression driver has been designed to deliver a coherent wavefront at the horn entrance in all working frequency ranges. The phase plug, with its short openings and high flare rate value, assures low distortion and improvements in mid-high frequency reproduction. A copper sleeve reduces inductance value above 10kHz, reportedly improving phase and impedance linearisation.

The HF diaphragm assembly is composed of treated polyethylene material, ensuring consistent behaviour. The flat suspension shape is designed to maintain low stiffness and low mid-band distortion and response. An edge-wound aluminium voice coil wound on proprietary treated Nomex completes the diaphragm assembly, which shows a 30 per cent higher value of tensile elongation at a working operative temperature when compared to Kapton. A specific dedicated HF driver throat design has also been chosen, maximising the cone’s profile coupling.

www.eighteensound.com

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