The SUPERTWEETER ST300MG-SI is an Extended Frequency Response Tweeter for definition loudspeakers. Extended frequency response tweeter for TANNOY DEFINITION range and other speaker models to enhance reproduction of wide band digital audio formats. 25mm SuperTweeter with magnesium alloy dome and neodymium magnet system extends response to 62kHz to complement performance of wideband digital formats and increase resolution and detail. Low loss crossovers featuring ICW ClarityCap capacitors, air cored inductors and close tolerance non-inductive thick film resistors deliver a more natural and transparent sound.