Dayton Audio RST28F-4 1-1/8" Reference Series Fabric Dome Tweeter

The Dayton Audio Reference RST28F-4 Dome Tweeter represents a significant step forward in high-frequency reproduction, offering audiophile-grade performance for discerning listeners and builders alike. This soft dome tweeter is engineered to deliver exceptionally clear and detailed treble, making it an ideal choice for upgrading existing loudspeakers or constructing new high-fidelity designs. Whether you are assembling a dedicated stereo pair, a home cinema system, or a nearfield monitoring setup, this driver brings a level of refinement that elevates any audio project.

At the heart of the RST28F-4 lies a 25.4mm soft dome diaphragm, carefully optimised for smooth, extended response and low distortion. With a sensitivity of 93.5 dB at 2.83V/1m, it pairs efficiently with a wide range of amplifiers and crossover networks. Technical excellence is further underscored by a low voice coil inductance of just 0.03 mH, ensuring consistent performance across the frequency band. The tweeter’s resonance frequency of 71 Hz and a total Q factor of 0.92 contribute to controlled, natural behaviour at the crossover point. A 4-ohm impedance and 3-ohm DC resistance simplify system integration, while the 73 mm cut-out and 104.8 mm overall diameter allow for straightforward mounting in most enclosures. Built as part of Dayton Audio’s Reference Series, this tweeter is a testament to precision engineering and sonic transparency.