Rockford Fosgate R1675X2 6.75" 2-Way Coaxial Speakers

The Rockford Fosgate R1675X2 is a pair of 6.75-inch, 2-way coaxial full-range speakers designed as a practical replacement for worn or underperforming factory door speakers. They combine a woofer and flush-mounted tweeter in each speaker, helping simplify an upgrade where space is limited. Grilles and installation hardware are included for a more complete replacement package.

With 45 watts RMS and 90 watts maximum power handling per speaker, the R1675X2 is suited to many factory-radio upgrades and modest amplified systems. Its 4-ohm nominal impedance is common in aftermarket car-audio applications. The 52 Hz to 20 kHz frequency response covers bass, midrange, and treble duties for full-range playback.

The speaker uses a vacuum polypropylene cone with a rubber surround to provide a durable moving surface for everyday vehicle use. A silk-dome tweeter handles higher frequencies with a smoother character than many basic cone-tweeter designs. The integrated tweeter crossover directs high frequencies to the tweeter without requiring an external crossover box.

Rockford Fosgate builds the R1675X2 around a stamped-steel basket that supports the driver assembly during installation. Its 91 dB sensitivity rating supports efficient output from compatible head units and amplifiers. This makes it a sensible option for listeners seeking a direct-fit-style speaker upgrade without moving to a separate-component system.

The R1675X2 can be used in front or rear locations when the vehicle has compatible mounting space. Confirm the 5.59-inch mounting cutout and 2.19-inch mounting depth before purchase, since factory speaker openings vary by vehicle. For a balanced system, match the pair with compatible rear speakers, a properly configured receiver, or an amplifier within the speakers' power-handling range.

Key Features

• 6.75-Inch Coaxial Design: Combines woofer and tweeter in each speaker.
• 45 Watts RMS: Supports compatible factory-radio and amplifier upgrades.
• Silk-Dome Tweeter: Reproduces high frequencies through a flush-mounted design.
• Polypropylene Cone: Provides a durable woofer diaphragm for daily use.
• Integrated Tweeter Crossover: Routes high frequencies to the tweeter.
• Included Grilles and Hardware: Supplies key accessories for installation.

Design & Installation

The R1675X2 uses a vacuum polypropylene cone, rubber surround, stamped-steel basket, and silk-dome flush-mounted tweeter. These materials support a straightforward coaxial-speaker design with the tweeter integrated into the center of the woofer. The package also includes grilles and trim rings for installations where the speaker face will remain visible.

Before installation, verify that the vehicle accepts a 6.75-inch speaker with a 5.59-inch cutout and 2.19-inch mounting depth. The included accessories consist of mounting hardware, 16 feet of 26-gauge speaker wire, speed clips, and mounting screws. Observe speaker polarity during wiring, secure the speaker to a solid mounting surface, and use power from a compatible source rated appropriately for 45 watts RMS per speaker.