The Hertz Mille Pro MPX 690.3 is a high-performance 3-way coaxial speaker system designed specifically for rear deck installations, delivering powerful, wide-band sound with clarity and control—even at high volume levels.

This speaker features a 28mm Tetolon dome tweeter with a Neodymium magnet and a specially contoured faceplate, optimized for superior off-axis dispersion—a critical advantage in rear speaker positioning. Complementing the tweeter is a dedicated supertweeter, reinforcing ultra-high frequencies for a crisp, extended top-end that maintains detail and sparkle.

The radial venting system built into the basket ensures optimal cooling of the voice coil, maintaining low operating temperatures for consistent performance, even during prolonged high-dynamic listening sessions.