Infinity KAPPA683XF 6" x 8" Two-Way Car Speakers

The Infinity KAPPA683XF is a pair of 6 x 8-inch, two-way car speakers designed for replacing factory door or rear-deck speakers where this size is specified. They provide a higher-power alternative for listeners building a more capable factory-replacement system. Their 3-ohm nominal impedance and 93 dB sensitivity support strong output from compatible car-audio electronics.

These speakers use a separate woofer-and-tweeter arrangement to cover bass, midrange, and high-frequency content from one mounting location. The Plus One glass-fiber woofer cone is designed with increased cone area for its frame size. A hi-roll rubber surround supports woofer movement while the cone handles lower-frequency and midrange duties.

High frequencies come from a 3/4-inch edge-driven silk dome tweeter with an oversized voice coil. Infinity rates the KAPPA683XF for response from 40 Hz to 40 kHz, giving it extension beyond the usual audible high-frequency range. The tweeter level can be selected at 0 dB or -3 dB to help balance the presentation for the speaker's installed location.

The angled tweeter can rotate up to 270 degrees after installation, allowing its direction to be adjusted toward the listening area where vehicle packaging permits. This is useful in low door locations, where tweeter orientation can affect perceived imaging. The design keeps the tweeter integrated with the woofer, avoiding the need to find a separate tweeter mounting position.

With 100 watts RMS and 300 watts peak power handling per speaker, the KAPPA683XF is intended for systems that can supply appropriate clean power. It can be used as a focused 6 x 8-inch upgrade or as part of a broader speaker-and-amplifier refresh. Check vehicle-specific fitment, mounting depth, cutout dimensions, and amplifier compatibility before installation.

Key Features

• 6 x 8-Inch Two-Way Design: Combines a woofer and integrated tweeter in each speaker.
• Plus One Glass-Fiber Woofer: Uses a rigid, lightweight cone with increased cone area.
• Silk Dome Tweeter: Provides smooth high-frequency reproduction up to 40 kHz.
• Adjustable Tweeter Level: Select 0 dB or -3 dB output.
• Rotatable Angled Tweeter: Rotates up to 270 degrees for aiming flexibility.
• 100-Watt RMS Handling: Supports properly matched aftermarket amplification.

Design & Installation

The KAPPA683XF uses Plus One glass-fiber woofer cones, hi-roll rubber surrounds, and edge-driven silk dome tweeters. Each speaker has an angled tweeter assembly with a built-in output-level selector. The pair is supplied with spacers, foam gaskets, mounting screws, speed clips, Infinity logo badges, brand stickers, and an owner's manual.

Confirm that the intended location accepts a 6 x 8-inch speaker and allows the required frame, cutout, and mounting-depth clearance. Use the included foam gaskets and appropriate hardware to help create a secure installation, and observe speaker polarity when connecting wiring. Because these are 3-ohm speakers, verify that the connected head unit or amplifier is designed to operate safely with a 3-ohm load.