Hertz Mille Pro Series MPX-1653 6.5" Pro Audio Two-Way Coaxial Speakers (Pair) 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. Hertz Mille Pro Series MPX-1653 6.5" Pro Audio Two-Way Coaxial Speakers (Pair) Features and Specifications Features Main Features Coaxial tweeter built in woofer voice coil to re-create the sound-stage in live music performances 20 mm voice coil fiber soft dome tweeter for lower resonance frequency & reduced harmonic distortion Tweeter support working as rear chamber, to ensure low cut-off frequency crossover point. 36 mm copper woofer voice coil wound on Polyamide former for power handling and dynamic reproduction Pressed-pulp cone with cotton fibers combining stiffness & lightweight for wide frequency response Cone profile refined to match with tweeter emission ensuring phase consistency in the crossover area Specifications Technical Specs • 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) Electro-Acoustic Specs D mm: 132 Re Ohm: 3,1 Fs Hz: 90 Le mH: 0,01 Vas I: 4 Mms g: 18,9 Cms mm/N: 0,15 BL T*m: 5,8 Qts: 0,88 Qes: 1,06 Hertz SPL Show Series SX-690-NEO 6x9" Three-Way SPL Coaxial Speakers with Neo Magnets and UV/Waterproofing Dimensions A: 165 mm, 6.5 in. B: 141 mm, 5.55 in. C: 74 mm, 2.91 in. D: 62,6 mm, 2.46 in. E: 183,5 mm, 7.22 in. F: 29 mm, 1.14 in. Weight of one speaker (kg/lb): 1.27 (2.8)