Kenwood KFC-1366S 5-1/4" 2-Way Coaxial Speakers

The Kenwood KFC-1366S is a pair of 5-1/4-inch, 2-way coaxial car speakers designed for replacing compatible factory door, dash, or rear-deck speakers. Its compact format provides an option for vehicles with limited speaker mounting space. The speakers use a 4-ohm design suitable for many conventional car-audio speaker circuits.

These speakers are intended for listeners who want a straightforward factory-speaker replacement with separate woofer and tweeter elements built into each speaker. The 5-1/4-inch polypropylene woofer handles the lower and midrange portions of the audio signal, while the 1-inch balanced dome tweeter reproduces higher frequencies. Kenwood specifies a 45 Hz to 22 kHz frequency response and 89 dB sensitivity.

The KFC-1366S uses a polypropylene woofer cone with a cloth surround, paired with a PEI balanced dome tweeter. This coaxial arrangement keeps both drivers in one mounting location, helping simplify installation where separate tweeter mounting is not desired. An enlarged magnet circuit and Sound Field Enhancer are part of the speaker design.

With 30 watts rated input power and 260 watts peak input power, these speakers can be used with an appropriately matched factory radio or external amplifier. Their 4-ohm impedance should be matched to an audio source designed to drive 4-ohm speakers. They are supplied as a pair for left/right replacement or expansion within a vehicle audio system.

The 1-3/4-inch mounting depth and 4-7/16-inch cutout diameter are key measurements to verify before purchase. Kenwood also lists a low 5/16-inch mounting height to help accommodate more mounting locations. Included grilles, wiring leads, screws, and speed nuts support a basic installation.

Key Features

• 5-1/4-Inch Coaxial Design: Combines woofer and tweeter drivers in each speaker.
• 2-Way Speaker System: Separates low/mid and high-frequency reproduction between two drivers.
• Polypropylene Woofer Cone: Provides the main 5-1/4-inch woofer diaphragm.
• 1-Inch PEI Dome Tweeter: Handles high-frequency audio within the coaxial assembly.
• 4-Ohm Impedance: Matches many standard automotive speaker circuits.
• Included Mounting Hardware: Supplies grilles, screws, speed nuts, and speaker cords.

Design & Installation

The KFC-1366S uses a black steel basket, ferrite woofer magnet, polypropylene cone, and cloth surround. Each speaker has a 1-inch PEI balanced dome tweeter mounted concentrically with the woofer. Grilles are included for installations where the speaker face needs protection or a finished appearance.

Confirm the vehicle's available opening, clearance, and wiring arrangement before installation. The required cutout diameter is 4-7/16 inches and mounting depth is 1-3/4 inches; the speaker measures 6-3/16 inches across with its grille. The package includes two 0.3-meter speaker cords, eight 4 x 25 mm tapping screws, and eight speed nuts, while vehicle-specific brackets or wire adapters are not listed.