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Dayton Audio RS28F-4 1-1/8" Silk Dome Tweeter

Brand:| Model: RS28F-4
Product Video
Dayton Audio's Reference Series tweeters are designed to complement the RS woofers. The RS28F-4 incorporates an optimized silk diaphragm that combines low mass, superb damping, and a carefully calculated dome profile.
  • 1-1/8" silk dome provides articulate yet non-fatiguing HF reproduction
  • Tuned rear chamber and excellent power handling support low, low crossover points
  • High flux density/low-distortion motor system with copper shorting rings
  • Cast aluminum faceplate with protective mesh grill
  • Perfect for home theater or audiophile speakers
Part # 
Weight: 1.8 lbs.  
List Price$79.99
Regular Price$54.75
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Special Price
Dayton Audio RS28TF Truncated Faceplate for RS Tweeters
Qty: 1Part # 275-138
List Price:$14.99
Part # 275-140
Qty:  EA
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Product Details

Dayton Audio RS28F-4 1-1/8" Silk Dome Tweeter

Dayton Audio's Reference Series tweeters are designed to complement the RS woofers. The RS28F-4 incorporates an optimized silk diaphragm that combines low mass, superb damping, and a carefully calculated dome profile. A tuned rear chamber, supported by a rugged diaphragm assembly, enables crossover possibilities in ranges as low as 1,000~1,100 Hz (with the appropriate filter). This unique 1-1/8" silk dome and a state-of-the-art motor system employs copper shorting rings to ensure that high frequency content is reproduced as transparently as possible, assuring studio-quality performance. RS28F-4 tweeters not only match the look and features of the RS woofers but also the clean, detailed, and uncolored sound that characterizes the entire series.

Specifications: • Power handling: 100 watts RMS/200 watts max (with appropriate crossover) • VCdia: 1-1/8" • Le: 0.04 mH • Impedance: 4 ohms • Re: 3.0 ohms • Frequency range: 1,200-20,000 Hz • Fs: 530.9 Hz • SPL: 88 dB 1W/1m • Qms: 2.43 • Qes: 1.06 • Qts: 0.58 • Dimensions: Overall diameter: 4.13", Cutout diameter: 3.28", Depth: 1.81".

Product Specifications
  • Tweeter TypeSoft Dome
  • Cone / Dome Diameter1-1/8"
  • Impedance4 ohms
  • Power Handling (RMS)100 Watts
Dayton Audio RS28F-4 1-1/8" Silk Dome Tweeter
  • BrandDayton Audio
  • ModelRS28F-4
  • Part Number275-140
  • UPC844632080371
  • Product CategoryTweeters
  • Unit of MeasureEA
  • Product Rating
    (16 Reviews)
  • Weight1.8 lbs.
  • Case Qty28
  • 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.

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Dayton Audio RS28F-4 1-1/8" Silk Dome Tweeter
Dayton Audio RS28F-4 1-1/8" Silk Dome Tweeter is rated 4.9375 out of 5 by 16.
Rated 4 out of 5 by from Worth the effortThe measured frequency response of the pair I received showed quite a dip at @3.3k and a general excess from 6-9k; all this required a lot of x/o manipulation but in the end the big strengths of excellent LF extension and flat response in the top octave won out with impressive transparency and air
Date published: 2014-04-21
Rated 5 out of 5 by from Alright!I have a pair of MB Quart 190s which are 2 way bookshelf speakers made in the early 90s (Mine actually reads made in WEST Germany!). I have been inordinately abusive to these over the years (I blame The Who), and noticed recently that it cost me a tweeter. MB Quart could not replace this tweeter so I began searching for an aftermarket that might work. Thank goodness for engineering standards, as I found this tweeter which was 4 Ohm and the right size (with a light tap from a rubber mallet) to fit into the original space. The original tweeter on the other speaker still works, and I have the opportunity to compare the two keeping in mind that the original speaker has a 20+ year break in period. I would say that the original tweeter is brighter than this replacement, perhaps a little fatiguing at volume. I suspect that the Germans meant these to be played at conversation level to emphasize detail, not knock out windows. I am very pleased, and will put in for the second tweeter, just to match sound. If I could find two woofers that would fit the space (outside diameter 7.25 inches, 4Ohm), I'd probably swing for them too.
Date published: 2014-03-07
Rated 5 out of 5 by from Well Made & Sonically PleasingI'm no speaker guru, far from it. I have a pair of obscure RDL Acoustics floorstanding speakers from the mid '90's, and one tweeter had blown. I didn't want to buy new speakers but needed new tweeters, of course. Speakers are rated at 8 ohms with a 2000hz crossover. Based on my speaker and the Dayton tweeter specs, the Dayton's aren't necessarily supposed to sound good. But after running the Pioneer MCCAC calibration, they actually sounded fantastic. I'd also tried ScanSpeak and Usher tweeters that were rated properly, at 8 ohms with low crossover abilities, versus 4 ohms for the Dayton's, but they didn't sound right: either too bright or like they actually didn't cross over correctly with the woofers. So the Dayton's sound great to me -- smooth, warm, laid back, not anywhere near being harsh, but not as "airy" and "open" as the others and far more focused than, say, the Usher's I tried. They also appear to be very well made; the metal faceplate, included foam rings, and the mesh screen covering the tweeter are much appreciated. Very happy with my decision!
Date published: 2013-08-29
Rated 5 out of 5 by from Very Nice!These tweeters sound excellent, as I expected. I love the sound of soft domes; they are warm and natural compared to any other kind of tweeter, in my opinion. An excellent value!I have them mounted on top of my bookshelf speakers in open-backed plywood wedges. The boxes have a generic 8" paper woofer, and a Pyle dome mid-range. One of the mid-ranges has started an irritating ringing during a particularly distorted vocal on one song. I may have to upgrade to better drivers to keep up with the tweeters! I am driving these with a Parasound 125-watt (8-ohm), high-current amp.
Date published: 2013-05-27
Rated 5 out of 5 by from Excellent performance and constructionSolid tweeter that my ears thank me for. My 10 year old JBL 310 speaker's tweeters were very tinny and bright that over time they developed sibilance. I replaced them with these and added a bypass cossover cap - Vishay 1837. This bypass cap tamed these tweeters further and cleaned up the highs. The sound is more clear and pleasing to the ears. The build quality is solid and it is easy to tell that these will last a while. I am a beginner audiophile that just recently got into speaker upgrades / design.
Date published: 2013-04-14
Rated 5 out of 5 by from Pleasant surpriseSeveral months ago I built a pair of Dayton RS722 kit speakers, but with Jeff Bagby's crossover, as described on the Tech Talk board. I was unhappy with the RS28a domes that come with the kit, so, when Jeff tried the silk dome RS28f with a zobel on the tweeters as a drop in replacement, I thought I'd try them. BIG difference. The highs are now sweet and never screechy. Applause and cymbals now sound right. The RS28fs sounded better right out of the box than the RS28as sounded after months of break in.I was going to sell my speakers before I got the silk domes. I'm keeping them now.
Date published: 2014-03-08

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Dayton Audio RS28F-4 1-1/8" Silk Dome Tweeter

Are there FRD and ZMA files available for the RS28F-4?

I have FRD and ZMA files for the RS28A-4 to use for design simulation. I would rather use the RS28F-4 but would need the FRD and ZMA files.
Asked by: mpickard
Check the PE Techtalk board. The files have been posted there for easy download.
Answered by: Pete Schumacher
Date published: 2011-11-25

Does this need it's own chamber

If I put this with a six inch driver would I have tom have a sealed chamber for the tweeter. And if I do what should the volume be. I am asking because there is a hole on the back. I have no experience with dome tweeters.
Asked by: Andy Lancaster 321
The rear chamber is sealed. You do not have to build a chamber behind it. The "hole" is a sealed extrusion that has likely been designed to achieve a specific impedance profile.
Answered by: ThaiBoxing101
Date published: 2013-02-07

l-pad needed to crossover with RS180S-8 7" woofer?

this is going to be my first build, and I decided on a 2-way ported using these tweeters with the RS180S-8 7" woofer. When i check the technical specs, there is a difference of 0.4 db on the SPL. is it worth fitting an L-pad to attenuate 0.4 db? thanks for any responses.
Asked by: newbuilder
An L-Pad is an easy adder in a DIY project. I like your crossover point and I would start with that a listen to them a while. If the spl difference is something you wish to attenuate, then add an L-Pad to each speaker then. Ser digestion below.
Answered by: Nitnub
Date published: 2012-10-15

Work well in B8 Audi's?

I have a 2010 Audi A4 with the basic concert system. I was curious if switching these out (along with the woofers) and replacing them with these tweeters (and RS woofers) while still using the factory amp. Will I have improved results?
Asked by: Point.Blank
That's a complex question. Cars either come with a cruddy set of speakers, or a very specifically designed system matched to the interior. Sometimes the electronics have equalization programmed into them to taylor the sound to the vehicle. If you truly want to upgrade, this is a great tweeter. But change out all the speakers and consider adding a sub. You'll have to look at the amp - but it may not be a powerhouse and deliver the performance you're looking for considering all the effort you're putting forth. A new amp along with the speakers will make you smile when you turn on the new system!
Answered by: MarkAJH
Date published: 2012-04-17

Female Quick Disconnects?

Would these female quick disconnects work with these tweeters? Are there any alternative, or better methods of wiring up to these tweeters? I'm probably going to use 8gauge tinned OFC, shaved to fit into the quick disconnects.
Asked by: BobbyG
The RS line of tweeters takes a 0.250 female disconnect.The point of using 8AWG wire is really not necessary. As frequency increases, less power is required, and you'll likely not even give the tweeter more than 20-30W in regular to moderate listening volumes. Anything larger than 16AWG is not required, and 18AWG would likely be just fine for use with these drivers.
Answered by: Wolfy
Date published: 2013-01-06

When designing an l-pad for this tweeter, what is (Z)?

This tweeter has a impedance of 4 ohms, an Re of 3 ohms and on the specification sheet an Re of 2.8 ohms. Which value do I use for (Z) when I want to use resistors for an attenuation l-pad circuit?
Asked by: cavemanmusic
Z is the name given for impedence. The z of s speaker actually changes at different frequencies. The amp power increases at lower z. For your design I would use a z of 3 and you will be fine.
Answered by: Nitnub
Date published: 2012-12-10


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