1" Fabric Dome Neodymium Tweeter Kit 75W RMS, Audiophile External Crossover with Poly-Capacitors and Air-Core Inductors. On-Axis and Off-Axis Mounting.

Product Overview

The Rockford Fosgate Power T1T-S is a 1" fabric dome tweeter kit rated at 75W RMS a dedicated tweeter kit taken directly from the Power series T1 component speaker systems. It is designed for buyers who prefer the warm, natural tonal character of a treated fabric dome tweeter over the brighter presentation of aluminium or hard dome alternatives.

The kit includes two tweeters, dedicated external crossovers, trim rings, and mounting hardware. The external crossover uses audiophile-grade components 5% tolerance poly-capacitors and air-core inductors for transparent, accurate frequency division without the parasitic losses associated with standard crossover components. The tweeter supports both on-axis and off-axis mounting configurations, enabling the dome to be positioned facing directly toward the listening position or angled for wider dispersion. The recessed mount uses a standard 1-3/4" hole saw.

Key Specifications

• Tweeter size: 1 inch (25mm — implied)
• Dome material: Treated fabric
• Motor: Neodymium ("neo-tweeter")
• Suspension: Integral
• Power handling (RMS): 75W per tweeter (confirmed)
• Peak power: Not specified — confirm with Rockford Fosgate
• Impedance: Not specified — confirm with Rockford Fosgate
• Sensitivity: Not specified — confirm with Rockford Fosgate
• Frequency response: Not specified — confirm with Rockford Fosgate
• Crossover: External, audiophile grade — 5% poly-capacitors and air-core inductors
• Crossover point: Not specified — confirm with Rockford Fosgate
• Crossover slope: Not specified — confirm with Rockford Fosgate
• Mounting configurations: On-axis and off-axis
• Recessed mount hole size: 1-3/4" hole saw
• Trim rings: Included
• Mounting hardware: Included
• Sold as: Pair (2 tweeters — confirmed in description)
• Warranty: Not specified — confirm with Rockford Fosgate

Features & Benefits

• Treated Fabric Dome — A fabric dome tweeter produces a warm, natural, and smooth high-frequency character — well suited to extended listening sessions where a bright or forward treble presentation would become fatiguing. The dome treatment enhances moisture and temperature resistance while adjusting the dome's resonant characteristics for smoother extended treble output.
• Neodymium Motor ("Neo-Tweeter") — A neodymium magnet motor provides a high magnetic flux density in a compact, lightweight motor assembly — contributing to high sensitivity and improved transient response compared to ferrite magnet designs of equivalent physical size.
• 75W RMS Power Handling — 75W RMS is the highest confirmed power rating among the three tweeter kits in this catalogue, providing substantial sustained power handling for amplified installations.
• Audiophile External Crossover — 5% Poly-Capacitors and Air-Core Inductors — The dedicated external crossover uses 5% tolerance poly-capacitors and air-core inductors — audiophile-grade component specifications. Poly-capacitors have lower equivalent series resistance and better high-frequency response than standard electrolytic capacitors. Air-core inductors have no magnetic saturation and produce negligible eddy current losses compared to iron-core designs — both choices contribute to transparent, accurate high-pass frequency division with minimal signal degradation. The external crossover must be physically mounted in the door or another accessible location during installation.
• On-Axis and Off-Axis Mounting Configurations — The T1T-S supports both on-axis (tweeter dome facing directly toward the listener) and off-axis (tweeter angled away from the direct listening axis) mounting. On-axis placement provides maximum high-frequency output to the listening position; off-axis placement produces a wider, more diffuse sound field. Both options are supported without additional hardware.
• 1-3/4" Recessed Hole Saw Mount — The recessed mount uses a standard 1-3/4" hole saw for a clean, factory-look installation in door panels, A-pillars, and dash trim.
• Trim Rings Included — Trim rings provide a finished appearance at the tweeter mounting location.
• Sold as a Pair — Two tweeters per kit — confirmed in the product description.

Technical Specs

Compatible With / Goes Well With

Suitable for:

• Power series component system builds requiring a dedicated audiophile tweeter
• Any front stage installation where a 1" fabric dome tweeter is the preferred choice
• Upgrading existing Power series coaxial installations with dedicated independent tweeters
• Installations where the warm, smooth character of fabric dome tweeter is preferred

Pairs well with:

• Rockford Fosgate Power series 6" or 6.5" woofers in a component build
• Rockford Fosgate T400-4, T600-4, or T1000-4AD 4-channel amplifiers
• Power series or Punch Pro midrange drivers for a 3-way front stage system

Frequently Asked Questions

What is a treated fabric dome tweeter and what does it sound like?

A fabric dome tweeter uses a soft woven cloth material (typically treated with a resin or coating) as the tweeter diaphragm. The treatment improves moisture resistance and adjusts the dome's acoustic properties. Fabric domes are known for a warm, smooth, and natural high-frequency character — less forward and bright than aluminium or rigid thermoplastic domes. They are preferred by listeners who find hard dome tweeters fatiguing at high volumes or over extended listening periods.

What is a neodymium tweeter motor?

Neodymium is a rare-earth magnet material producing significantly higher magnetic flux density per unit mass than ferrite (standard ceramic) magnets. A neodymium motor achieves the same or greater magnetic field strength as a ferrite design in a much smaller, lighter assembly — contributing to improved sensitivity and transient response from a compact tweeter.

What are 5% tolerance poly-capacitors and air-core inductors?

5% tolerance means the capacitor's actual capacitance value is within 5% of its rated value — tighter tolerance than standard crossover components, ensuring the crossover frequency matches its design specification more accurately. Poly-capacitors use a polymer film dielectric rather than electrolytic chemistry — providing lower equivalent series resistance and better high-frequency linearity. Air-core inductors have no magnetic core material, eliminating magnetic saturation and eddy current losses that can occur in iron-core designs. Together, these component choices produce more transparent and accurate frequency division with lower signal degradation through the crossover network.

What is the difference between on-axis and off-axis mounting?

On-axis mounting positions the tweeter dome facing directly toward the primary listening position for maximum treble focus. Off-axis mounting angles the tweeter away from the direct listening axis — spreading the high-frequency output more broadly and producing a wider, more diffuse soundstage. Both configurations are supported by the T1T-S hardware.

What is the confirmed power handling for the T1T-S?

75W RMS per tweeter is confirmed. This is the highest confirmed RMS rating of the three tweeter kits available in this catalogue. Impedance, sensitivity, and frequency response must be confirmed from the official Rockford Fosgate T1T-S datasheet.