STX Audio STX-700TW 4.03" Super Tweeter

The STX Audio STX-700TW is a 4.03-inch super tweeter designed to add upper-frequency output to a car-audio speaker system. It is intended for listeners building systems that need dedicated high-frequency reproduction beyond what larger midrange or full-range drivers typically provide. Its published frequency response spans 2 kHz to 20 kHz.

This is a 4-ohm, wired tweeter with a published maximum power rating of 1,500 watts and a sensitivity rating of 105 dB. Those specifications position it for high-output vehicle-audio applications where efficient high-frequency output is important. An RMS power rating is not published in the available product information.

The STX-700TW uses a titanium diaphragm and a CCAW voice coil. Titanium is the stated diaphragm material, while the copper-clad aluminum wire voice coil is specified as part of the driver construction. The listed magnet weight is 12.3 ounces.

As a dedicated super tweeter, the STX-700TW is suited to complementing compatible midrange speakers, woofers, or subwoofers in a multi-driver system. Its 2 kHz to 20 kHz stated operating range focuses on the upper portion of the audible spectrum rather than bass reproduction. The 105 dB sensitivity specification indicates an efficient driver relative to the input signal.

The available product data identifies this as a single 4.03-inch driver for car-audio use. It can be considered for custom door-panel, dash, pillar, or enclosure applications only after confirming the actual mounting surface and clearances. Published information does not provide vehicle-specific fitment, cutout diameter, mounting depth, RMS power handling, or crossover details.

Key Features

• 4.03-Inch Super Tweeter: Adds a dedicated high-frequency driver to a multi-speaker car-audio system.
• 2 kHz–20 kHz Response: Covers the published upper-frequency operating range.
• 4-Ohm Impedance: Supports use with compatible 4-ohm speaker channels.
• 105 dB Sensitivity: Indicates efficient output from the driver.
• Titanium Diaphragm: Uses titanium as the stated diaphragm material.
• CCAW Voice Coil: Uses a copper-clad aluminum wire voice coil.

Design & Installation

The STX-700TW combines a titanium diaphragm, CCAW voice coil, and a listed 12.3-ounce magnet assembly. It is a compact, wired dynamic-driver tweeter intended for car-audio systems. The published unit size is 4.03 inches, or approximately 10.2 cm.

Match the tweeter to a compatible 4-ohm channel and configure the system so it receives the appropriate high-frequency signal. Confirm mounting depth, cutout requirements, terminal access, protection method, and supplied hardware before installation, as these details are not published in the available specifications. A crossover is not listed as included, so verify all required signal-management components for the planned system.