The coax tweeter concentric to the woofer of the MPX 165.3 car audio coaxial speakers allows for one single linear-phase emission point, for a natural timbre providing a detailed sound stage. Thanks to the 'Center Tuning Duct' geometry, the tweeter resonance frequency is especially low and the employment of damping materials for the inside provides for a linear acoustic emission. The acoustic lens optimizes its off-axis response, which is typical with door installation of coax speakers; besides the 36 mm diameter woofer generates deep and controlled bass frequencies.
Power Handling - Peak W 200 Power Handling - Continuous W 100 Impedance Ω 4 Frequency response Hz 45 ÷ 21,5k Sensitivity dB SPL 92 Woofer size mm (in.) 165 (6.5) Tweeter size mm (in.) 25 (1) Woofer Voice Coil Ø mm (in.) 36 (1.42) Tweeter voice coil Ø mm (in.) 20 (0.8) Woofer magnet High density flux ferrite Tweeter magnet Neodymium Woofer cone Pressed-pulp cone with cotton fibers Tweeter dome Tetolon - See more at: http://www.hertzaudiovideo.com/car-audio-coaxials-mille-pro-mpx165-3/#sthash.uPM8Ywiu.dpuf