STX Audio STX-65PX 6.5" Midrange Speaker Pair

The STX Audio STX-65PX is a pair of 6.5-inch pro-style midrange speakers designed for car-audio systems that prioritize strong vocal and instrument output. They are intended for amplified installations where factory speakers do not provide the required midrange presence or output capability. The pair format makes them suitable for upgrading two speaker positions in a door panel, pod, or custom installation.

With 560 watts RMS power handling per speaker, the STX-65PX is built for systems using substantial external amplification. Its 97 dB sensitivity rating supports efficient output from compatible amplification, while its 95 Hz to 12 kHz frequency-response range focuses on the vocal and midrange portion of the music spectrum. These are midrange drivers, so a complete system may also use dedicated tweeters and subwoofers for frequency ranges outside their intended operating band.

The speaker uses a black pressed-paper cone and cloth surround to reproduce midrange material with a direct, natural character. A 1.75-inch high-temperature voice coil is specified to support thermal stability when the speakers are used at elevated listening levels. This construction is aimed at high-output daily systems and custom pro-audio-style vehicle builds.

A 38-ounce ferrite magnet provides the motor structure behind each driver, while the reinforced steel basket supports the cone assembly. The steel-frame design is intended to provide a durable mounting platform for door, panel, and speaker-pod installations. These speakers are sold as a matched pair for left- and right-side placement.

The STX-65PX uses a conventional 6.5-inch speaker footprint, with a 5.9-inch cutout requirement and 3.11-inch mounting depth. Confirm available depth behind the panel, window clearance, and the mounting-hole pattern before installation. For reliable results, pair the speakers with an amplifier and crossover settings appropriate for their RMS power rating and stated frequency range.

Key Features

• 6.5-Inch Midrange Pair: Provides two matching drivers for a two-position vehicle upgrade.
• 560W RMS Per Speaker: Supports use in appropriately amplified high-output systems.
• 97 dB Sensitivity: Helps produce strong output with compatible amplifier power.
• 95 Hz–12 kHz Response: Covers core vocal and instrument midrange frequencies.
• 1.75-Inch Voice Coil: Uses a high-temperature coil design for sustained operation.
• 38-Ounce Ferrite Magnet: Provides the speaker motor structure for controlled driver movement.

Design & Installation

The STX-65PX combines a black pressed-paper cone, cloth surround, reinforced steel basket, ferrite magnet, and high-temperature voice coil. These materials support a durable pro-style midrange-driver design intended for amplified car-audio applications. The pair has a stated overall diameter of 6.81 inches.

Plan for a 5.9-inch cutout and at least 3.11 inches of mounting depth, then verify clearance in the intended door, panel, or pod before cutting or fastening. Use an external amplifier matched conservatively to the 560-watt RMS rating per speaker, and use appropriate crossover configuration to keep deep bass and frequencies above the stated operating range out of the drivers. Installation hardware, wiring, grilles, and crossover components are not confirmed as included.