Jamo C 80 SUR Catalog - Page 6

Jamo Tech platforms Centre-Plug The Centre-Plug replaces the traditional dust cap, making the cone both lighter and more responsive, while also cooling the voice-coil, resulting in a higher power handling and a stable sound reproduction when playing loud. The design allows increased power-handling capabilities along with a more uniform, precise and dynamic reproduction of sound. The Centre-Plug also prevents potential break-up points where the dust cap would have been glued to the cone. In addition, it prevents over- and under pressure behind the dust cap when the cone moves back and forth. The advantage is more dynamic and precise sound reproduction. HCC (Hard Conical Cone) The HCC technology (Hard Conical Cone) enables the driver to reach far beyond midrange frequencies before any significant cone break-ups occur. The material's rigidity and the membrane's conical shape ensures the unit creates clear and detailed sound with very little distortion, even at high sound pressures. This combines with the natural rubber suspension, which effectively prevents vibrations from travelling back to the diaphragm, the result being a very wellcontrolled diaphragm that operates without break-ups up to 4kHz -well beyond its working range. dB (SPL) 100 95 90 85 80 75  Centre-Plug Normal speaker unit 70 50 100 200 500 1k 2k 5k Sound pressure level from a speaker with Centre-Plug compared to one without, when playing at high play-back level. dB 25.0 20.0 15.0 10.0 5.0 1k 2k Cumulative Spectral Decay IEX Frequencies - Hz Jamo HCC operates without break-ups in critical areas. dB 25.0 20.0 15.0 10.0 5.0 1k 2k Cumulative Spectral Decay IEX Frequencies - Hz Conventional speakers don't fare so well! 0.00 0.50 1.00 1.50 2.00 2.50 msec MLSSA 0.00 0.50 1.00 1.50 2.00 2.50 msec MLSSA