TX440C Specifications2-way coaxial speakersDiameter : 10cm (4“)Peak Power : 240WRMS Power : 60WSensitivity : 91,5dB/2,83v/1mImpedance : 4ΩResponse : 60Hz - 25000HzMounting Depth : 45mm20mm silk dome tweeterGrills includedFeatures :Treated paper cone coated with silvered sand for a clear midrangeØ20mm high definition neodymium silk dome tweeter for better detailsExtra large strontium magnet for a better cone control and more power handling25mm aluminium voice coil for an efficient cooling and a better power handlingRubber suspension for a better reliabilitySoft and musical sound with a precise high quality detailed bassWorks fine on original head-units, but works much better on the MTX TX2450 amp