Vented aerodynamic cast aluminium chassis for optimum strength and low compression Proprietary cone material with EGYPTIAN PAPYRUSTM fibres made in-house Soft low damping rubber surround for optimum transient response Advanced BIMAX spider for improved linearity Powerful optimized low distortion neodymium motor system Non-conducting fibre glass voice coil formerfor minimum damping Extended copper sleeve on pole piece for lowinductance and reduced distortion CCAW voice coil for reduced moving mass Long life silver lead wires attached 180ﾰ apartfor improved stability Vented pole piece for reduced compression High piston to chassis diameter ratio Gasket and bolt hole protrusions for reducedcoupling to speaker cabinet