ALUMINIUM DOME - TEXTILE SURROUND - PHASE SHIELD The dome and surround has been designed to push the “break-up” to frequencies beyond the audible range. This tweeter has all the detail that a metal dome provides without the objectionable break-up. Phase optimized diaphragm design for coherent high frequency radiation. Copper cap and saturation controlled motor system for low distortion. Non-reflective rear chamber with optimized damping and flow optimized vented pole piece. CCAW voice coil. Silver lead wires. Low resonance frequency. Phase optimized diaphragm design for coherent high frequency radiation Copper cap for reduced voice coil inductance and minimum phase shift Saturation controlled motor system for low distortion Non-reflective rear chamber with optimized damping for improved dynamics Flow optimized vented pole piece for optimum coupling to rear chamber CCAW voice coil for low moving mass Long life silver lead wires Low resonance frequency