Infinity REF757T 0.75" Edge-Driven Textile Dome Tweeters

The Infinity REF757T is a pair of 0.75-inch car audio tweeters designed to restore clear, detailed high frequencies in an upgraded or replacement speaker system. They are a focused solution for vehicles with dull, damaged, or limited factory tweeters. The compact format and included mounting options support a range of custom and factory-location installations.

Each REF757T uses an edge-driven textile dome design intended to produce smooth treble response through the upper frequency range. With a 2.5 kHz to 21 kHz frequency response, the pair is suited to handling the high-frequency portion of music rather than full-range playback. Their 93 dB sensitivity rating helps them work efficiently with appropriately matched factory or aftermarket amplification.

The tweeters are rated at 45 watts RMS and 135 watts peak each, with a 3-ohm nominal impedance. This low-impedance design is intended to help make effective use of available power in car audio systems. Passive in-line crossovers are included to direct suitable high-frequency content to the tweeters and help protect them from lower frequencies.

Installation flexibility is a key part of the REF757T package. Surface-mount, flush-mount, and Starfish mounting hardware are included, allowing the tweeters to be positioned in many dash, sail-panel, door, or factory tweeter locations. The surface-mount housing uses a ball-and-socket arrangement that can be aimed to approximately 40 degrees.

The REF757T is a practical choice for listeners building a component-style front stage or replacing factory tweeters while retaining a compatible factory radio or adding an amplifier. It can be paired with properly crossed-over midrange or full-range speakers to create a more complete frequency presentation. Fitment should be checked against the selected mounting method, available panel clearance, and the vehicle's existing wiring configuration.

Key Features

• 0.75-Inch Textile Dome: Focuses on detailed high-frequency reproduction in a compact format.
• Edge-Driven Design: Supports smooth, controlled treble response at higher output levels.
• 45W RMS Handling: Accommodates appropriately matched factory or aftermarket amplification.
• 3-Ohm Impedance: Helps draw useful power from compatible car audio systems.
• Passive In-Line Crossovers: Filter lower frequencies before they reach the tweeters.
• Multiple Mounting Options: Includes flush, surface, and Starfish mounting hardware.

Design & Installation

The REF757T uses textile edge-driven dome tweeters with a compact circular profile. Its included I-Mount and Starfish hardware provides several physical installation approaches without requiring a single fixed mounting style. The package also includes Infinity logo badges, mounting screws, washers, nuts, and flush-mount hardware.

Use one included passive in-line crossover for each tweeter, connecting the crossover input to the appropriate high-frequency speaker signal and its output to the tweeter. Verify polarity, available depth, cutout size, and trim-panel clearance before drilling or modifying a vehicle panel. For factory locations, the Starfish brackets can be trimmed and adapted as needed; some installations may require additional vehicle-specific mounting hardware.