Dayton Audio RS28A-4 1-1/8" Aluminum Dome Tweeter

Brand:|Model: RS28A-4
The Dayton Audio Reference Series tweeters' unique black anodized 1-1/8" aluminum diaphragms and state-of-the-art motor systems not only match the look and features of the Reference Series woofers, but also match the clean, detailed, and uncolored sound.
Due In: 11/11/2015
List Price$79.99
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Your Price
Buy 4+$49.50
Part # 275-130
  • Tuned rear chamber for great low-end response
  • 1-1/8" Aluminum diaphragm offers amazing clarity without typical metal dome harshness
  • Low-distortion motor system achieves a rare level of transparency
  • Non-shielded version is perfect for high-performance audiophile speakers
  • Great replacement for the Dayton RS28AS-4 1-1/8" Aluminum Dome Shielded Tweeter

Product Details

Dayton Audio RS28A-4 1-1/8" Aluminum Dome Tweeter

The Dayton Audio RS28A-4 Reference Series tweeter is designed to be an excellent match for the Dayton Audio Reference Series woofers. The tweeter's unique black anodized 1-1/8" aluminum diaphragm and state-of-the-art motor system not only matches the look and features of the RS woofers, but also matches the clean, detailed, and uncolored sound. A cast aluminum faceplate, protective mesh grill, tuned rear chamber, and several distortion-reducing paths in the motor system are just a few of the features that allow this tweeter to outperform many expensive audiophile high-frequency transducers.

Product Specifications
  • Tweeter TypeMetal Dome
  • Cone / Dome Diameter1-1/8"
  • Impedance4 ohms
  • Power Handling (RMS)100 Watts
  • Frequency Response1,200 to 20,000 Hz
  • Sensitivity90.4 dB 2.83V/1m
Thiele-Small Parameters
  • Resonant Frequency (Fs)603 Hz
  • DC Resistance (Re)2.80 ohms
  • Voice Coil Inductance (Le)0.04 mH
  • Mechanical Q (Qms)1.18
  • Electromagnetic Q (Qes)1.03
  • Total Q (Qts)0.55
Mounting Information
  • Overall Outside Diameter4.13"
  • Cutout Diameter2.88"
  • Depth1.81"
Dayton Audio RS28A-4 1-1/8" Aluminum Dome Tweeter
  • BrandDayton Audio
  • ModelRS28A-4
  • Part Number275-130
  • UPC844632001604
  • Product CategoryTweeters
  • Unit of MeasureEA
  • Product Rating
    (18 Reviews)
  • Weight1.8 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

View similar products to the Dayton Audio RS28A-4 1-1/8" Aluminum Dome Tweeter
in the Tweeters product category.


Dayton Audio RS28A-4 1-1/8" Aluminum Dome Tweeter
Dayton Audio RS28A-4 1-1/8" Aluminum Dome Tweeter is rated 4.8889 out of 5 by 18.
Rated 5 out of 5 by from great midrange, no harshnessGot these on a lark and have not been dissappointed. Not sure exactly what the crossover freq is as I've adjusted it by ear but it's in the lower midrange. Using Dayton metallized polypropylene caps bypassed with film/foil and wow, horns have that correct bite and imaging is spot on. I've had these in some old epi 180s sitting outside on my porch for a couple of years with no adverse sonic effects. Couldn't be happier.
Date published: 2015-05-12
Rated 5 out of 5 by from nice tweetI've used this tweet in a couple project now and have yet to be disappointed. Handles power well and sounds good.Works well with a 2nd-order @ 2khz that approachs 18dB/oct below 1000Hz. Also works well with a 4th-order @ 1.2khz.
Date published: 2011-01-03
Rated 5 out of 5 by from Fine tweeterVery nice clear tweeter. Very clear for pop/jazz, for classical, the aluminum dome highs are not as natural. I will get the silk dome version to do a comparison.
Date published: 2010-03-23
Rated 5 out of 5 by from Automotive useI decided to try these on a whim for an automotive installation...All I can say is WOW. I have them crossed at 1.2khz, active 24db, w/100w each to match up with a set of front mids in my car. They are kick panel mounted on angled rings.I had some reservations about using an aluminum dome in the car, but not anymore. These have absolutely no sibilance or harshness in my application and are very clean and clear. They have also completely know there is a tweeter there, but you cannot locate it with your ear.
Date published: 2009-11-16
Rated 5 out of 5 by from Outstanding reprodution of highsUsed in front surrounds out performs my JBL studio monitors
Date published: 2009-07-28
Rated 5 out of 5 by from Used to replace speakers in AR 48Sounds as good as new!
Date published: 2009-05-03
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Product Q&A

Get your questions answered from other customers
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Dayton Audio RS28A-4 1-1/8" Aluminum Dome Tweeter

How is this tweeter different than the RS28AS-4 tweeters that I currently have ?

Asked by: MGotcha
There will be no audible difference between the two, the one you have has magnetic shielding and this one doesn't.
Answered by: MattP
Date published: 2015-05-28

It's a good replacement for Celestion 300? Spec.: Two-way transmission line loudspeaker. 1.25" aluminum-dome tweeter, 6.5" polyolefin-cone woofer. Crossover frequency: 2.2kHz. Crossover slopes: 3rd-order Butterworth, 18dB/octave, 8 Ohm - 84db

Asked by: G107
This will work at that crossover frequency without a problem, but you will want to use an 8 ohm tweeter in order for that crossover point not to change. Please contact our tech support for more help with this question, or 800-338-0531 x1.
Answered by: MattP
Date published: 2015-02-23

Are those SPL (sound pressure level) numbers? If so, they are much lower than the 94.4 db on the specification sheet at the Parts Express website. One of the decimal was red marked. What does it mean? What was it matched to?

Asked by: Kei Lau
The manufacturer measures these tweeters with 1 watt as opposed to 2.83 volts as specified on our spec sheet. This will account for the difference. The checked decimal number is the tolerance. For example, if the number in the box is 90 and 0.4 is checked or marked, that tweeter sensitivity is 90.4 dB at 1w/1M.
Answered by: MattP
Date published: 2014-11-20

On each of the speaker, there is a sticker with a bunch of number on it? A single 2 digits on the top row and a series of decimal numbers from .6 to -.6 below. The 2 digits number above the row of decimal numbers is 90 on one and 88 on the other.

Asked by: Kei Lau
These numbers represent the sensitivity tolerances of each driver. For example, if one tweeter reads 88 in the box, and 0.4 is checked, that tweeter is 88.4 dB sensitive.
Answered by: MattP
Date published: 2014-11-17

Does this, as well as most other drivers and tweeters sold come with mounting hardware?

Asked by: JDCrae
Unfortunately this along with most other drivers do not include mounting screws.
Answered by: MattP
Date published: 2014-08-12

CAN it be à good replacement speaker for Energy Pro monitor 22?

Asked by: Jean Re
Unfortunately we do not have a cross reference available for this type of thing. Please contact our tech support for more help with this question, or 800-338-0531 x1.
Answered by: MattP
Date published: 2014-07-22
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