STX Audio SX502 5.25" 2-Way Coaxial Car Speakers

The STX Audio SX502 is a pair of 5.25-inch 2-way coaxial car speakers made for upgrading compatible factory speaker locations. Its coaxial format places the woofer and tweeter together, allowing full-range sound from a compact mounting position. This makes the pair suitable for vehicles with 5.25-inch door or rear-deck speaker openings.

Rated at 60 watts RMS per speaker, the SX502 is designed for use with compatible factory or aftermarket audio systems. The pair handles 120 watts RMS combined and up to 450 watts maximum power. Its 4-ohm impedance is a common match for many car stereo and amplifier applications.

The SX502 is intended to deliver clear vocals, midrange presence, and upper-frequency detail in a space-conscious replacement-speaker format. Its specified frequency response is 85 Hz to 22 kHz, supporting the primary vocal and instrument ranges. For deeper low-frequency output, it can be used as part of a larger system that includes a compatible subwoofer.

Each speaker uses a black injection-molded cone with a rubber edge surround to support controlled cone movement. A 1-inch aluminum voice coil and 12-ounce magnet are part of the speaker motor design. The specified 88 dB sensitivity describes its efficiency rating under standard speaker-measurement conditions.

A black steel basket provides the mounting structure, while included grilles add protection and a finished appearance where speakers are exposed. Gold grille accents complement the Street Series styling. The SX502 is sold as a stereo pair for replacing left and right speakers together.

Key Features

• 5.25-Inch Coaxial Design: Combines woofer and tweeter functions in each compact speaker.
• 60 Watts RMS Per Speaker: Supports compatible head units and amplifier channels.
• 4-Ohm Impedance: Fits many common factory and aftermarket vehicle audio systems.
• 85 Hz To 22 kHz Response: Covers vocal, midrange, and high-frequency listening ranges.
• Injection-Molded Cone: Provides the main sound-producing surface of each speaker.
• Included Matching Grilles: Adds a finished look for exposed speaker installations.

Design & Installation

The SX502 uses black injection-molded cones, rubber edge surrounds, and black steel baskets. Each speaker is specified with a 1-inch aluminum voice coil and a 12-ounce magnet. The included grilles feature gold accents and are intended to complement the Street Series appearance.

Confirm your vehicle's factory speaker opening, mounting depth, mounting-hole pattern, and wiring connection before installation, as vehicle fitment varies. Use the speakers with a compatible 4-ohm stereo or amplifier channel and observe the 60-watt RMS-per-speaker rating when selecting amplification. The pair is intended for compatible 5.25-inch door or rear-deck positions.