... resin Diaphragm: APEI(Polyether Lmido)diaphragm is employed enabling creation of a clear treble with minimal distortion. Voicecoil:Highly heat-resistant ... voice coil that responds to a 200W max. Input power(cutoff frequency≥7,000Hz with ... quality,best service,best price!---Long businessQualityAs the good quality of our products,We do want long business,not once ...