RST28 1-1/8" Reference Series Fabric Done Tweeter and Truncated Faceplate

MSRP: $71.99

Quick Overview

The Dayton Audio RST28F-4 1-1/8" silk dome Reference Series tweeter has remarkable clarity, low free air resonance, exceptional efficiency, and smooth frequency response, a combination seldom found in the industry at any price. This upgrade over the original RS28F-4 provides incredible performance at an amazing value. The included truncated faceplate allows for tighter spacing between the tweeter and woofer/midrange drivers.

Product Highlights

  • 1-1/8" silk diaphragm offers excellent damping and remarkable clarity
  • Perfect for line arrays or mini-monitor designs
  • Exceptional efficiency at 93.5 ±3 dB from 1.4 kHz to 20 kHz for extremely accurate response
  • Well-designed phase bridge to balance the response in the upper octave
  • Tuned rear chamber and high-quality Ferrofluid for extended low-end response
  • Matches the performance of even the most expensive audiophile high-frequency transducers

Product Manuals / Spec Sheets / Downloads

Dayton Audio RST28F-4 Specification Sheet
Dayton Audio RST28F-4 Data Files

Buying Options

The Dayton Audio RST28F-4 silk dome Reference Series tweeter offers exceptional efficiency from 1,400 Hz to 20,000 Hz with an extremely natural and dynamic sound. This unique 1-1/8" silk dome and a state-of-the-art Ferrofluid cooled motor system employs copper shorting rings to ensure that high frequency content is reproduced as transparently as possible, assuring studio-quality performance. RST28F-4 tweeters not only match the look and features of the RS woofers and midranges but also the clean, detailed, and uncolored sound that characterizes the entire series. These are just a few of the features that allow these tweeters to outperform some the most expensive audiophile high-frequency transducers. The included truncated faceplate makes the RST28F-4 ideal for deigns like line arrays or compact mini-monitors that demand a smaller faceplate, or any situation where you want to keep center-to-center distances as small as possible.

Speaker Series Reference Series
Model Number
Color Black
Unit of Measure Each
UPC 848791007255
Warranty - Parts 5 Years
Warranty - Labor 5 Years
Weight 1.85 lbs.
Speaker Type Tweeter
Power Handling (RMS) 80 watts
Impedance 4 ohms
Sensitivity 93.5 dB @ 2.83V/1m
Frequency Response 1,400 - 20,000 Hz
DC Resistance (Re) 3 ohms
Voice Coil Inductance (Le) 0.03 mH @ 1 kHz
Resonant Frequency (Fs) 710 Hz
Mechanical Q (Qms) 2.52
Electromagnetic Q (Qes) 1.46
Total Q (Qts) 0.92
Overall Outside Diameter 4.125" x 3.25"
Overall Depth 1.75"
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