STX Audio STX65MXB 6.5" Marine Coaxial Speaker

The STX Audio STX65MXB is a 6.5-inch marine coaxial speaker designed for boats, UTVs, ATVs, and other exposed outdoor audio installations. It provides a compact speaker option where moisture, sunlight, and limited mounting space are practical concerns. Its coaxial layout combines the woofer and high-frequency driver into one installation location.

This model is intended for listeners who need sound reinforcement in open-air environments where wind, water, road noise, and engine noise can reduce music clarity. The listed 600-watt maximum power rating and 300-watt continuous RMS rating position it for systems using appropriately matched amplification. A 2-way design is used to reproduce both midrange and high-frequency content from a single speaker location.

The STX65MXB uses marine-oriented materials including a PC-ABS basket with UV inhibitors and an ASA grille. These materials are specified to help the speaker withstand outdoor exposure in marine and powersports applications. Its black finish and integrated RGB lighting suit installations where the speaker is part of the visible design.

Integrated 12-volt RGB LED lighting adds illumination around the speaker for nighttime boating, off-road use, or outdoor gatherings. The lighting requires a compatible 12-volt RGB connection as part of the installation. Audio wiring and LED wiring should be planned separately during system setup.

With a 6.8-inch overall diameter, 4.84-inch mounting width, and 2.41-inch mounting depth, the STX65MXB is sized for many standard 6.5-inch speaker positions when clearance is confirmed. It can be used as part of a marine or powersports speaker upgrade, with source-unit or amplifier power matched to the speaker's rated capacity. Check the mounting opening, rear-depth clearance, wiring route, and environmental sealing requirements before installation.

Key Features

• 6.5-Inch Coaxial Design: Combines woofer and high-frequency reproduction in one compact speaker location.
• 600W Maximum Power: Supports higher-output marine and powersports audio system designs.
• 300W RMS Rating: Provides a continuous-power reference for amplifier matching.
• RGB LED Lighting: Adds 12-volt color lighting to compatible installations.
• Marine-Oriented Materials: Uses a UV-inhibited PC-ABS basket and ASA grille.
• Shallow Mounting Depth: Fits installations with 2.41 inches of rear clearance.

Design & Installation

The STX65MXB is built with a PC-ABS basket containing UV inhibitors and an ASA grille. This material combination is specified for outdoor and marine environments where sun exposure and moisture are common. The compact round profile is designed for conventional 6.5-inch-class speaker locations.

Confirm that the mounting opening accommodates the listed 4.84-inch mounting width and that at least 2.41 inches of rear depth is available. Connect the speaker to an amplifier or receiver with power matched appropriately to its published ratings, and connect the RGB lighting to a suitable 12-volt RGB lighting circuit. For boat and off-road installations, use wiring, connections, and mounting practices appropriate for exposed environments.