Kenwood KFC-1798RS 6-3/4" 2-Way Car Speakers

The Kenwood KFC-1798RS is a pair of 6-3/4-inch, 2-way coaxial car speakers designed to replace worn or limited factory speakers. They combine a polypropylene woofer and integrated balanced-dome tweeter to cover both bass and high-frequency playback from a single factory-style mounting location. This makes them a practical option for vehicle owners seeking a straightforward speaker upgrade without adding separate tweeter locations.

With a 4-ohm impedance, 100-watt RMS rating, and 88 dB sensitivity, these speakers can be used with compatible factory or aftermarket audio systems. Their 73 Hz to 18 kHz frequency response supports clear midrange and treble reproduction while retaining useful upper-bass output for door or rear-deck installations. An external amplifier is optional, but any connected amplifier should be matched appropriately to the speakers' power rating and impedance.

The 6-3/4-inch woofer uses a black polypropylene cone with Kenwood's Diamond Array Pattern and a rubber surround. The cone structure is intended to reduce distortion, while the rubber surround supports long-term movement of the woofer cone. A steel basket and black-painted steel top plate and yoke complete the speaker's structural and magnetic assembly.

For upper-frequency reproduction, the KFC-1798RS uses a 1-3/16-inch balanced-dome tweeter with a neodymium magnet. Kenwood's Sound Field Enhancer is integrated into the tweeter design to help direct high-frequency sound forward and broaden the sound field at higher frequencies. The Acoustic Sound Harmonizer controls woofer sound waves through the tweeter panel for smoother overall response.

These coaxial speakers are suited to factory-location upgrades where mounting depth and tweeter protrusion are important. Their 1-7/8-inch mounting depth, 5-1/2-inch cutout requirement, and low 1/4-inch tweeter height should be checked against the vehicle's available space before installation. The package includes grilles, mounting hardware, speaker leads, and adhesive tape for installations that can use the supplied components.

Key Features

• 6-3/4-Inch 2-Way Design: Combines woofer and tweeter performance in one round speaker assembly.
• 100W RMS Power Handling: Supports compatible aftermarket amplification and higher-output audio systems.
• Diamond Array PP Cone: Polypropylene woofer cone structure is designed to reduce distortion.
• Balanced-Dome Tweeter: A 30 mm tweeter handles upper-frequency detail from the same mounting location.
• Acoustic Sound Harmonizer: Controls woofer sound waves through the tweeter panel for smoother response.
• Low-Profile Factory Fit: Low tweeter height and shallow mounting depth support many factory locations.

Design & Installation

The KFC-1798RS uses a black polypropylene woofer diaphragm with Diamond Array Pattern embossing, a rubber surround, and a steel basket. Its magnetic structure includes a ferrite woofer magnet, plus a black-painted steel top plate and yoke. The balanced-dome tweeter uses a neodymium magnet and is positioned within the coaxial speaker assembly.

Confirm that the vehicle accepts a 6-3/4-inch round speaker and has at least a 5-1/2-inch cutout diameter and 1-7/8-inch mounting depth. Check panel clearance for the 1/4-inch tweeter height, especially behind factory grilles. Use the supplied screws, speed nuts, speaker cords, and adhesive tape where appropriate, and observe correct speaker polarity when wiring.