Hertz DCX170-3 6.75" 2-Way Coaxial Speakers

The Hertz DCX 170.3 is a pair of 170 mm (6.7-inch) two-way coaxial car speakers designed for straightforward factory-speaker replacement. Its shallow 51 mm mounting depth helps address installations where door-panel or mounting-space clearance is limited. The integrated tweeter and built-in crossover place woofer and high-frequency reproduction in one speaker assembly.

This model is suited to listeners updating worn or basic factory speakers while retaining a compact, conventional coaxial layout. It is rated for 50 W continuous power handling and 100 W peak power handling at 4 ohms. With a 93 dB SPL sensitivity specification, it is designed to produce useful output from compatible factory or aftermarket audio systems.

The DCX 170.3 uses a water-repellent pressed-paper woofer cone with a TPU surround. This material combination is intended to support cone movement while helping manage resonance and everyday in-door use. Its published frequency response is 60 Hz to 21 kHz, covering midbass, midrange, and high-frequency duties within a two-way design.

High frequencies are handled by a compact PEI dome tweeter with a neodymium magnet. The woofer uses a 25 mm pure-copper voice coil wound on a Conex former, while the woofer motor uses a high-density-flux ferrite magnet. These construction details support the speaker's shallow-profile design without separating the tweeter into an external component set.

The DCX 170.3 is a practical option for compatible 170 mm speaker locations in doors or other restricted spaces. Its 4-ohm impedance and built-in crossover simplify system planning compared with a separate-component speaker system. Verify the vehicle's opening diameter, mounting depth, mounting-hole pattern, and factory wiring arrangement before installation.

Key Features

• Two-Way Coaxial Design: Integrates the woofer and tweeter into each speaker.
• Shallow 51 mm Depth: Helps fit locations with limited mounting clearance.
• 50 W Continuous Rating: Supports power matching with compatible audio systems.
• Water-Repellent Paper Cone: Supports use in typical vehicle-door environments.
• PEI Dome Tweeter: Reproduces high frequencies from a compact assembly.
• Built-In Crossover: Directs frequencies between the woofer and tweeter.

Design & Installation

The DCX 170.3 combines a high-density-flux ferrite woofer magnet with a neodymium tweeter magnet in a compact coaxial structure. Its woofer uses a water-repellent pressed-paper cone, TPU surround, pure-copper voice coil on a Conex former, and an abrasion-protected DIN-size basket. Tin-plated high-current terminals and silver-plated lead wires are used for the speaker connections.

Use these speakers only where the vehicle can accommodate their 170 mm nominal size, 140 mm mounting-hole diameter, and 51 mm mounting depth. Confirm clearance behind the mounting surface and around the 45 mm front-profile dimension before reinstalling the door panel or grille. Connect each speaker with correct polarity and use an audio source or amplifier appropriate for a 4-ohm speaker rated at 50 W continuous power.