Dayton Audio RST28A-4 1-1/8" Reference Series Aluminum Dome Tweeter 4 Ohm
€39.95
Deliverable from ca.: 13/11/2025
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. This upgrade over the original RS28A-4 provides incredible performance at an amazing value.
Key Features
- 1-1/8" aluminum diaphragm offers remarkable clarity without the typical harshness of metal domes
- Exceptional efficiency at 92.5 ±3 dB from 1.5 kHz to 19 kHz and a smooth frequency response
- Well-designed phase bridge to balance the response in the upper octave
- 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
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. 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.
For applications like line arrays or compact mini-monitors that demand a smaller faceplate, an optional truncated faceplate is available.
For the replacement diaphragm, see part number 275-133
| Artikel-Nr.: | 275-131 |
|---|---|
| Außenmaß: | 104,7mm |
| DC Resistance (Re): | 3 Ohm |
| EAN: | 848791004896 |
| Einbautiefe: | 44,5 mm |
| Einheit: | Stück |
| Elektrische Güte (Qes): | 165 |
| Frequenzbereich: | 1,500 bis 20,000Hz |
| Gesamtgüte (Qts): | 93 |
| Hochtöner Typ: | Metall Kalotte |
| Impedanz (Z): | 4 Ohm |
| Marke: | Dayton Audio |
| Mechanische Güte (Qms): | 215 |
| Modell: | RST28A-4 |
| Nennbelastbarkeit: | 80 Watt |
| Resonanzfrequenz (fs): | 775Hz |
| Schwingspulenind. (Le): | 0,03mH |
| Sensitivität: | 92,5dB 2,83V/1m |
Accessory Items
Leto Speaker KitLeto Elegant classic 2-way floor-standing speaker. Assembly: Dayton aluminum cone, midwoofer DSA175-8, Dayton aluminum cone tweeter RST28F-4;Frequenzweichenbauteile Mundorf Hi-Quality Properties: Precise and deep-reaching bass. Multi-layered and attractive midrange with considerableDetails. Brilliant and high-resolution treble range, even far beyond human hearingout. Leto impresses even at very low volumes with outstanding resolution and thus delights as wellthe neighbors. When a little more volume is needed, the metal membrane steps up and deliversproper pressure without sacrificing precision. All in all, an everyday speaker with pronounced depth and remarkably largeDetail richness.
Apollon Speaker KitApollon Classic two-way compact speaker Assembly: Dayton DSA175-8 and RST28A-4; Crossover components Mundorf Hi-Quality: Properties: The extremely popular size is a large playing field. What can Apollon do; now its 175mm mid-woofer chassis Dayton Audio DSA175-8 with a torsion-resistant aluminum diaphragm is immune to loss deformation in the bass even with coarser music material. The upper end of the midrange is a mature chassis development with enough damping properties of the surround and bonding technology, resulting in a very balanced midrange. "On the point," as test listeners commented, Apollon achieves bass, midrange, kick, and harmonious vocal reproduction. Accompanying this is a large 28mm tweeter dome RST28A-4 from the Dayton Audio Reference Series, which is also made of aluminum. You can see from its development that the designers have come up with something sensible. It has the tendency of a so-called English tuning with a constantly steadily declining frequency range up to over 20000Hz. This property also helps the metal dome to achieve a stress-free sound image and harmonizes perfectly with the mid-woofer. From only 14 liters net, it goes down to 45Hz-3dB, and the precise and powerful reproduction bringsdoch des Öfteren erstauntes Augenaufschlagen hervor. Auch die Langzeit Hörfähigkeit ist erstaunlich gutsuccessful, both chassis actors have already been praised by many specialist magazines and dedicated hobbyists,a pronounced biting poverty and appealing efficiency have been attested. One reason why wethe two chassis also as a harmonious duo. The box is nominally 4 ohms, below 3000Hzhowever clean 8 Ohm, SPL is a stately 88dB/2.83V which is also suitable for smaller amplifierscontrolled to handle. Our conclusion; a beautiful classic compact with long-term qualities and agrobdynamic elevated recipient class. Scope of delivery: Screws Chassis Terminal Cable (Inside) Insulation fleece Crossover Components (Loose)