STX Audio SX682 6x8" 3-Way Coaxial Car Speakers

The STX Audio SX682 is a pair of 6x8-inch 3-way coaxial car speakers for replacing compatible factory door or rear-deck speakers. It provides a full-range upgrade in a common factory-size format for vehicles that use 6x8-inch speaker locations. Verify the vehicle's opening, mounting depth, screw pattern, and connector requirements before installation.

Each speaker is rated for 100 watts RMS, with 200 watts RMS handling for the pair. A 4-ohm impedance supports connection to compatible factory radios, aftermarket receivers, or properly matched external amplification. The 92 dB sensitivity rating helps the speakers produce useful output from modest available power.

The 3-way coaxial layout combines a polypropylene woofer with bridge-mounted midrange and tweeter drivers in each speaker. This arrangement places low-, mid-, and high-frequency reproduction in one assembly, making it practical where separate component speakers are not desired. Its listed 52 Hz to 20 kHz frequency response covers the main audible range used in everyday music listening.

Black polypropylene cones and rubber edge surrounds support controlled cone movement in an automotive environment. Each speaker also uses a 1-inch aluminum voice coil, a 15-ounce magnet, and a black steel basket. These components form the motor and mounting structure of the Street Series design.

The SX682 works as a factory-size speaker refresh or as part of a larger aftermarket audio upgrade. It can be installed with a compatible head unit or matched to an amplifier that delivers appropriate power at 4 ohms. Two gold-accent black grilles are included for installations where the speakers remain visible or need added protection.

Key Features

• 3-Way Coaxial Design: Integrates woofer, midrange, and tweeter drivers per speaker.
• 100W RMS Per Speaker: Supports properly matched aftermarket amplification.
• 4-Ohm Impedance: Works with compatible factory and aftermarket systems.
• 92 dB Sensitivity: Supports output from modest available power.
• Polypropylene and Rubber Construction: Supports controlled cone movement and durability.
• Included Gold-Accent Grilles: Provides a finished look for visible installations.

Design & Installation

The SX682 uses black polypropylene woofer cones, rubber edge surrounds, 1-inch aluminum voice coils, 15-ounce magnets, and black steel baskets. The integrated 3-way driver arrangement keeps the system compact while combining low-, mid-, and high-frequency drivers in each speaker. Included black grilles feature gold accent detailing.

Confirm that the vehicle accepts a 6x8-inch speaker and check available mounting depth, mounting-hole placement, and connector style before purchase. Use suitable wiring, observe speaker polarity, and match any external amplifier to the speakers' 4-ohm impedance and 100-watt RMS-per-speaker rating. Vehicle-specific brackets, adapters, and wiring harnesses are not confirmed as included.