STX Audio SX682 6x8" 2-Way Coaxial Car Speakers

The STX Audio SX682 is a pair of 6x8-inch 2-way coaxial car speakers made for replacing worn factory speakers or building a straightforward aftermarket upgrade. Their common 6x8-inch footprint is suited to many front-door, rear-door, and rear-deck locations that use this speaker size. Each pair includes two speakers and two matching protective grilles.

With 200 watts RMS handling per pair, or 100 watts RMS per speaker, the SX682 is designed for systems that need more power capability than basic factory replacements. The 4-ohm impedance supports use with compatible factory radios and aftermarket amplification. Matching amplifier output appropriately helps the speakers operate within their rated power range.

The coaxial design places the woofer and high-frequency driver together in each speaker, helping provide full-range playback from a single factory-size opening. A 52 Hz to 20 kHz frequency response covers bass, midrange, and treble content for everyday music listening. The listed 92 dB sensitivity supports responsive output from a compatible car audio system.

STX Audio uses black polypropylene cones with rubber edge surrounds to support controlled cone movement and everyday durability. Each speaker also uses a 1-inch aluminum voice coil, a 15-ounce magnet, and a black steel basket. These construction details form the mechanical foundation of the Street Series design.

The SX682 can be used as a practical upgrade path when retaining a factory-size speaker location while improving system power handling. It is appropriate for listeners replacing aging door or rear-deck speakers, as well as for installers matching speakers to a compatible aftermarket radio or amplifier. Its included grilles offer an additional finishing option where speaker protection or a visible installation is needed.

Key Features

• 6x8-Inch Coaxial Format: Fits many common factory speaker locations.
• 200W RMS Per Pair: Handles 100 watts RMS per speaker.
• 4-Ohm Impedance: Works with compatible car audio equipment.
• 92 dB Sensitivity: Supports responsive output from available power.
• Polypropylene and Rubber Construction: Supports durable, controlled cone movement.
• Included Matching Grilles: Provides two black grilles with gold accents.

Design & Installation

The SX682 uses black polypropylene cones, rubber edge surrounds, 1-inch aluminum voice coils, 15-ounce magnets, and rigid black steel baskets. This material combination is intended to support daily automotive use while maintaining controlled speaker operation. The supplied black grilles include gold accent detailing.

Confirm that the vehicle has a compatible 6x8-inch mounting location before installation, as vehicle-specific mounting depth, cutout, screw pattern, and wiring requirements are not specified. Connect the speakers using appropriate vehicle or aftermarket wiring, observing correct polarity. For amplified systems, use an amplifier compatible with 4-ohm speakers and keep power output aligned with the 100-watt RMS rating per speaker.