Centre-Plug, HCC Hard Conical Cone | JAMO C 80 instruction

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 de- sign 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 mate- rial’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 well- controlled diaphragm that operates without break-ups up to 4kHz -well beyond its working range.

dB (SPL) 100







	Centre-Plug			Normal speaker unit
	Centre-Plug			Normal speaker unit

50		100	200		500	1k	2k

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
5k	Cumulative Spectral Decay	IEX Frequencies - Hz

0.00

0.50

1.00 1.50 2.00

2.50msec

MLSSA

0.00

0.50

1.00

1.50

2.00

2.50msec

MLSSA

Sound pressure level from a speaker with Centre-Plug compared to one without, when playing at high play-back level.

Conventional speakers don’t fare so well!