Cerwin Vega ST69CX 6x9" 2-Way Coaxial Speakers

The Cerwin Vega ST69CX is a pair of 6x9-inch, 2-way coaxial speakers built for high-output vehicle, marine, and motorsport audio applications. It combines a full-range woofer and centrally mounted titanium dome tweeter in each speaker, simplifying upgrades where space is limited. The 4-ohm design suits systems designed for standard aftermarket speaker loads.

These speakers are intended for listeners who want stronger low-frequency presence and clear upper-frequency detail from a 6x9-inch location. Their 45 Hz to 23 kHz frequency response supports bass, midrange, and treble reproduction from a single coaxial assembly. With 125 watts RMS handling per speaker, they are appropriate for amplifier-powered systems that are correctly matched for power and impedance.

A UV-treated, thermal-molded waterproof Kevlar fiber cone and rubber surround support use in exposed environments. The speaker system is described as IPX65 marine-grade compliant and salt-resistant, making it suitable for installations where moisture, sun, and changing weather are considerations. These materials also provide a durable foundation for daily on-road and off-road use.

Each ST69CX uses a 1-inch titanium dome tweeter to reproduce high frequencies, while the woofer uses a 1.4-inch high-temperature voice coil for power handling. A 12 dB Bessel crossover network divides the signal between the woofer and tweeter. The high-energy ferrite motor system, milled aluminum top plate, and vented T-yoke back plate are designed to support heat management during higher-output listening.

The ST69CX works well as a replacement or upgrade for compatible 6x9-inch speaker locations with sufficient mounting clearance. It can be used with a compatible factory radio, though an external amplifier matched to its 125-watt RMS-per-speaker rating can provide greater output capability. Verify the 8.875 x 6.125-inch cutout requirement and 3.875-inch mounting depth before installation.

Key Features

• 6x9-Inch Coaxial Design: Combines woofer and tweeter performance in each speaker location.
• 125W RMS Per Speaker: Supports amplifier-powered systems with properly matched output.
• 1-Inch Titanium Dome Tweeter: Reproduces detailed high-frequency information.
• Kevlar Fiber Cone: Uses a UV-treated, waterproof cone construction.
• Marine-Grade Construction: IPX65-compliant design supports exposed-use installations.
• 12 dB Bessel Crossover: Directs appropriate frequencies to each driver.

Design & Installation

The ST69CX uses a high-temperature cast aluminum basket, rubber surround, ferrite motor system, milled aluminum top plate, and T-yoke back plate. Its woofer cone is made from UV-treated thermal-molded waterproof Kevlar fiber, while the integrated tweeter uses a titanium dome. Removable black trim rings or grilles are included.

Use the speakers only where the mounting opening measures approximately 8.875 x 6.125 inches and where at least 3.875 inches of mounting depth is available. The package includes a pair of speakers plus stainless mounting screws and machine bolts with nuts and washers. Match the amplifier or head-unit speaker output to the speakers' 4-ohm nominal impedance, and avoid exceeding their rated power handling.