Hertz MPCX 2 TM.3 2-Way Car Audio Crossover

The Hertz MPCX 2 TM.3 is a passive two-way crossover engineered for the midrange and tweeter section of a Mille Pro three-way car audio system. It divides the signal between compatible MP 70.3 midrange drivers and MP 25.3 tweeters at a fixed 5.5 kHz crossover point. This allows those upper-frequency drivers to operate in their intended ranges while a separate amplifier channel actively drives the woofer.

This crossover is intended for installers building a multi-amplified system around Hertz Mille Pro components rather than a conventional passive two-way setup. It is designed to work with an MP 165.3 or MP 165P.3 woofer operated actively, alongside the MP 70.3 midrange and MP 25.3 tweeter. That configuration gives the installer independent control of the woofer amplification while the MPCX 2 TM.3 manages the mid/high signal split.

The midrange section uses a 6 dB-per-octave low-pass network, while the tweeter section uses a 12 dB-per-octave high-pass network. Both filter sections meet at 5.5 kHz. A two-position tweeter-level control provides either 0 dB or +2 dB adjustment to help match high-frequency output to the vehicle and speaker placement.

Hertz uses 160V bi-metallized polyester film capacitors with ultra-low dissipation factor in the MPCX 2 TM.3 network. Its inductors use 1 mm pure copper wire and are designed with low series resistance for the midrange circuit. These component choices support a clean, controlled signal path without adding unnecessary complexity to the installation.

The compact housing measures 102 x 76.5 x 37 mm, making it easier to place in doors, kick panels, or other protected installation locations. A top vent grille is incorporated to support heat dissipation. The MPCX 2 TM.3 is a focused system-building component for shoppers matching the specified Hertz Mille Pro drivers in a three-way active/passive arrangement.

Key Features

• Three-Way System Application: Designed for the midrange and tweeter section of a multi-amplified Mille Pro system.
• 5.5 kHz Crossover Point: Splits compatible MP 70.3 and MP 25.3 drivers at a fixed frequency.
• Asymmetrical Filter Slopes: Uses 6 dB/octave midrange low-pass and 12 dB/octave tweeter high-pass filtering.
• Tweeter Level Control: Selectable 0 dB or +2 dB setting helps tailor treble output.
• Film Capacitors: 160V bi-metallized polyester capacitors use an ultra-low dissipation factor.
• Compact Ventilated Housing: Small footprint and top vent grille support practical placement and heat dissipation.

Design & Installation

The MPCX 2 TM.3 uses a compact crossover enclosure with a top vent grille for heat dissipation. Inside, it combines 160V bi-metallized polyester film capacitors with low-series-resistance inductors wound from 1 mm pure copper wire. The design is purpose-built for the Hertz Mille Pro MP 70.3 midrange and MP 25.3 tweeter combination.

Install the crossover in a dry, secure location with room for wiring and ventilation. Connect it only as part of the specified three-way multi-amplification arrangement: MP 70.3 midrange and MP 25.3 tweeter through the crossover, with an MP 165.3 or MP 165P.3 woofer actively driven by its own amplifier channel. Use the 0 dB or +2 dB tweeter setting after final speaker placement and listening evaluation.