STX Audio SX682 6x8" 3-Way Coaxial Speakers

The STX Audio SX682 is a pair of 6x8-inch 3-way coaxial car speakers designed to replace compatible factory door or rear-deck speakers. It provides a single-speaker solution for vehicles that use the common 6x8-inch format and need an updated full-range speaker system. The pair is rated for 200 watts RMS total, with 100 watts RMS handling per speaker.

Each SX682 combines a polypropylene woofer with bridge-mounted midrange and tweeter drivers. This 3-way coaxial arrangement divides low, midrange, and high-frequency duties within one speaker assembly. It is suited to listeners who want a straightforward factory-location upgrade without adding separate component speakers.

The speakers use a 4-ohm impedance and 92 dB sensitivity rating for compatibility with properly matched factory radios, aftermarket head units, or external amplifiers. Their 52 Hz to 20 kHz frequency-response rating covers much of the audible music range. A 65 Hz resonant-frequency specification provides additional system-matching information for installers.

Black polypropylene cones and rubber edge surrounds form the moving assembly of each speaker. A 1-inch aluminum voice coil and 15-ounce magnet support the motor system, while the black steel basket provides the mounting structure. These materials are intended for regular automotive use in appropriately sized factory speaker locations.

The SX682 pair can be used as a direct-size replacement where vehicle fitment allows, or as part of a larger aftermarket audio upgrade. Two gold-accent grilles are included for installations where the speakers are exposed. Vehicle mounting depth, screw pattern, and connector style should be checked before installation.

Key Features

• 3-Way Coaxial Design: Integrates woofer, midrange, and tweeter drivers in each speaker.
• 100W RMS Per Speaker: Supports properly matched radio or amplifier power.
• 4-Ohm Impedance: Fits compatible factory and aftermarket car audio systems.
• 92 dB Sensitivity: Helps produce useful output from modest available power.
• Polypropylene and Rubber Construction: Supports controlled cone movement in automotive use.
• Included Gold-Accent Grilles: Adds protection and a finished installation appearance.

Design & Installation

Each SX682 uses a black polypropylene woofer cone, rubber edge surround, 1-inch aluminum voice coil, 15-ounce magnet, and black steel basket. Bridge-mounted midrange and tweeter drivers complete the 3-way coaxial layout. The supplied grilles are black with gold accents.

Verify that the vehicle has a compatible 6x8-inch speaker opening before installation. Check mounting depth, mounting-hole pattern, and connector requirements, then observe correct speaker polarity during wiring. For amplified systems, use a compatible 4-ohm amplifier and match its output appropriately to the 100-watt RMS rating per speaker.