STX Audio SX652 6.5" 3-Way Coaxial Car Speakers

The STX Audio SX652 is a pair of 6.5-inch 3-way coaxial car speakers for replacing compatible factory door, rear-door, or rear-deck speakers. It is intended for vehicles needing a straightforward speaker refresh without changing the basic factory speaker locations. The pair uses a 4-ohm design suited to many compatible factory and aftermarket audio systems.

Each SX652 speaker combines a woofer with a bridge-mounted midrange driver and bridge-mounted tweeter. This three-driver arrangement separates low, vocal, and high-frequency content within a compact coaxial assembly. It is designed for listeners who want fuller everyday playback than a basic single-driver replacement speaker can provide.

The speakers are rated at 80 watts RMS each, or 160 watts RMS per pair, with a 650-watt maximum system power rating. Their 90 dB sensitivity and 4-ohm nominal impedance support use with appropriately matched stereo power or amplifier channels. For amplified systems, RMS power ratings are the appropriate reference for matching equipment.

A black injection-molded woofer cone and rubber edge surround support controlled cone movement for midbass reproduction. The motor assembly uses a 1-inch aluminum voice coil and a 15-ounce magnet. Together with the stated 68 Hz to 20 kHz frequency response, these features support balanced coverage for music playback in common vehicle speaker positions.

The SX652 is built on a black steel basket and includes matching gold-accent grilles. It can serve as a pair of front-door, rear-door, or rear-deck replacements where the vehicle's opening, depth, mounting pattern, and wiring allow. Confirm physical fitment and connector needs before beginning installation.

Key Features

• Three-Way Coaxial Design: Each speaker uses a woofer, bridge-mounted midrange, and tweeter.
• 80W RMS Per Speaker: Supports responsible matching with compatible amplifier channels.
• 4-Ohm Impedance: Works with many conventional car-audio speaker outputs.
• Injection-Molded Woofer Cone: Supports responsive midbass performance in compact factory locations.
• Rubber Edge Surround: Helps maintain controlled woofer cone movement during playback.
• Matching Grilles Included: Two gold-accent grilles provide a finished custom-install appearance.

Design & Installation

The SX652 uses black injection-molded woofer cones, durable rubber edge surrounds, 1-inch aluminum voice coils, 15-ounce magnets, and black steel baskets. Each speaker places its midrange driver and tweeter on a bridge above the woofer cone. The included grilles use gold accents for a finished appearance in installations where the speakers remain visible.

Check the vehicle's speaker opening, available mounting depth, mounting-hole pattern, wiring connectors, and panel clearance before purchase. Observe correct positive and negative speaker polarity during wiring, and use compatible 4-ohm source-unit or amplifier channels. These speakers are best used as a matched pair in compatible front-door, rear-door, or rear-deck locations.