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RST28-4 1-1/8" Reference Series Aluminum Dome Tweeter and Truncated Faceplate
Quick Overview
The Dayton Audio RST28A-4 1-1/8" aluminum 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. The included truncated faceplate allows for tighter spacing between the tweeter and woofer/midrange drivers.Product Highlights
- 1-1/8" aluminum diaphragm offers remarkable clarity without the typical harshness of metal domes
- Perfect for line arrays or mini-monitor designs
- Exceptional efficiency at 92.5 ±3 dB from 1.5 kHz to 19 kHz and a smooth frequency response
- Tuned rear chamber and high-quality Ferrofluid for excellent low-end response
- Low-distortion motor system achieves a rare level of transparency
- Matches the performance of even the most expensive audiophile high-frequency transducers
Product Manuals / Spec Sheets / Downloads
Dayton Audio RST28A-4 Specification SheetDayton Audio RST28A-4 Data Files
Buying Options
The Dayton Audio RST28A-4 aluminum dome Reference Series tweeter offers exceptional efficiency from 1,500 Hz to 20,000 Hz with smooth and well controlled frequency response. The included truncated faceplate makes the RST28A-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. This tweeter's unique black anodized 1-1/8" aluminum diaphragm and state-of-the-art motor system not only match the look and features of Dayton Audio's Reference Series woofers and midranges, but also the clean, detailed, and uncolored sound you have come to expect. A specialized damped rear chamber, well-designed phase bridge, rigid mesh grill, and several distortion-reducing paths in the motor are just a few of the features that allow these tweeters to outperform some the most expensive audiophile high-frequency transducers.
| Speaker Series | Reference Series |
| Model Number | |
| Color | Black |
| Unit of Measure | Each |
| UPC | 848791007248 |
| Warranty - Parts | 5 Years |
| Warranty - Labor | 5 Years |
| Product Shipping Weight (lbs.) | 1.85 |
| Speaker Type | Tweeter |
| Power Handling (RMS) | 80 watts |
| Power Handling (max) | -- |
| Continuous Program Power | -- |
| Impedance | 4 ohms |
| Sensitivity | 92.5 dB @ 2.83V/1m |
| Frequency Response | 1,500 - 20,000 Hz |
| Voice Coil Diameter | -- |
| Magnet Weight | -- |
| DC Resistance (Re) | 3 ohms |
| Voice Coil Inductance (Le) | 0.03 mH @ 1 kHz |
| Resonant Frequency (Fs) | 775 Hz |
| Mechanical Q (Qms) | 2.15 |
| Electromagnetic Q (Qes) | 1.65 |
| Total Q (Qts) | 0.93 |
| Diaphragm Mass Inc. Airload (Mms) | -- |
| Moving Mass Of Diaphragm (Mmd) | -- |
| Mechanical Compliance of Suspension (Cms) | -- |
| Surface Area Of Cone (Sd) | -- |
| Volume of Displacement (Vd) | -- |
| BL Product (BL) | -- |
| Compliance Equivalent Volume (Vas) | -- |
| Maximum Linear Excursion (Xmax) | -- |
| Drivers Mechanical Losses (Rms) | -- |
| Cone / Diaphragm Material | -- |
| Entry / Exit Diameter | -- |
| Surround Material | -- |
| Voice Coil Wire Material | -- |
| Voice Coil Former | -- |
| Basket/Frame Material | -- |
| Magnet Material | -- |
| Overall Outside Diameter | 4.125" x 3.25" |
| Overall Depth | 1.75" |
| Baffle Cutout Diameter | 2.875" |
| Mounting Hole Diameter | -- |
| Bolt Circle Diameter | -- |
| Product Weight | -- |
Customer Reviews
