STX Audio STX-65PS 6.5" Midrange Speaker Pair

The STX Audio STX-65PS is a pair of 6.5-inch car-audio midrange speakers designed to reproduce vocals, instruments, and other mid-frequency detail. It is intended for systems that need more projection and output than a typical factory full-range speaker. Each pair uses a 4-ohm speaker design and is suited to custom vehicle audio installations.

The STX-65PS is specified for 400 watts RMS and 1,000 watts maximum system power per pair. Its 95 dB sensitivity rating supports strong output from an appropriately matched amplifier. The 100 Hz to 16 kHz frequency range places its focus on midrange performance rather than deep bass reproduction.

A black pressed-paper cone is paired with a cloth-edge surround to provide the moving assembly for midrange playback. This material combination is specified for natural mid-frequency reproduction. The speakers are midrange drivers, so a complete system may use separate subwoofers and tweeters to cover frequencies outside their stated range.

The driver motor uses a 30-ounce ferrite magnet and a 1.5-inch high-temperature voice coil. A reinforced steel basket supports the driver assembly. These construction details are intended for installations where speakers will be used at elevated playback levels.

The STX-65PS has a 6.57-inch overall diameter, a 5.37-inch cutout requirement, and a 2.52-inch mounting depth. Those dimensions make it important to measure the vehicle opening and rear clearance before installation. It can be used in compatible doors, speaker pods, or custom panels when the mounting dimensions and system design are appropriate.

Key Features

• 6.5-Inch Midrange Drivers: A matched pair for dedicated vehicle midrange reproduction.
• 400W RMS System Rating: Provides a continuous power-handling reference for the pair.
• 95 dB Sensitivity: Supports efficient, high-output operation with suitable amplification.
• Pressed-Paper Cone: Delivers the specified midrange driver construction and response character.
• 30-Ounce Ferrite Magnet: Forms the speaker's specified magnetic motor structure.
• 1.5-Inch Voice Coil: Uses a high-temperature coil design for power handling.

Design & Installation

The STX-65PS combines a black pressed-paper cone, cloth-edge surround, reinforced steel basket, ferrite magnet, and high-temperature voice coil. Its construction is focused on a dedicated midrange-driver role. The listed frequency response is 100 Hz to 16 kHz.

Confirm the 5.37-inch cutout, 2.52-inch mounting depth, and 6.57-inch overall diameter against the intended mounting location before purchase. Use an amplifier and crossover strategy appropriate for 4-ohm midrange speakers, and avoid sending deep-bass content below the speaker's stated operating range. The package is identified as a pair of speakers; mounting hardware, grilles, and other accessories are not confirmed.