Hertz 4 Ohm Car Audio Coaxial Speaker - MPX165.3
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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.
Features
- CONCENTRIC COAXIAL TWEETER: built in the woofer voice coil, achieving one single point of emission, to re-create the virtual sound-stage like in live music performances.
- TWEETER SUPPORT WORKING AS A REAR CHAMBER: sized for low Fs, to ensure a well damped high pass frequency roll-off, allowing low cut-off frequency crossover point.
- 36 MM PURE COPPER WOOFER VOICE COIL: wound on a Polyamide former, for outstanding power handling and dynamic compression-free reproduction.
- PRESSED-PULP CONE WITH COTTON FIBERS: combining stiffness and lightweight for a wide frequency response. Cone profile geometrically refined to perfectly match with the tweeter emission ensuring phase consistency in the crossover area.
- “BOUNDARY FREE” RUBBER SURROUND: for improved efficiency and wider midbass frequency. (Logo Boundary Free)
- OVER-SIZED FERRITE MAGNET: combined with very low carbon content iron plates, for low distortion at high power levels.
- BASKET: low mounting depth, acoustically transparent aluminium alloy basket with elegant diamond cutting and featuring the aluminium Hertz logo.
- ANTI-VIBRATION RUBBER MAGNET COVER: to damp spurious vibrations.
Technologies
BOUNDARY FREE SURROUND
This technology provides the ability to achieve wider emission surface of the cone compared to speakers with same diameter; that way, the cone manages to move a bigger mass of air, so it produces more acoustic pressure. This special surround is built from highly pure IIR butyl rubber, ensuring extraordinary thermal and mechanical linearity.
Accessories
Grille Optional
| Data table | |
|---|---|
| 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 |