Features : • 142 mm AlMg alloy dome with variable thickness for higher first breakup mode • Extremely low moving mass for better transient response and higher efficiency • Fully saturated neodymium motor with copper sleeve for low non linear and modulation distortion • Single-layer ribbon CCAW voice coil for lower inductance • Underhung voice coil wound on titanium former • 137 mm voice coil for low thermal compression • Ring magnet system with large rear opening reduces backside reflections and improves dipole operation • Natural silk surround and cotton spider from Dr. Kurt Müller GmbH & Co. for higher midrange resolution • Surround hidden in basket rim allows significant reduction of mounting diameter • Thick aluminium powder coated basket • Gold plated wire terminals • Recommended frequency range 180 Hz - 2,8 kHz