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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
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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.

Product Specifications
  • Tweeter TypeSoft Dome
  • Cone / Dome Diameter1-1/8"
  • Impedance4 ohms
  • Power Handling (RMS)100 Watts
  • Frequency Response1,200 to 20,000 Hz
  • Sensitivity91 dB 2.83V/1m
Thiele-Small Parameters
  • Resonant Frequency (Fs)535 Hz
  • DC Resistance (Re)2.82 ohms
  • Voice Coil Inductance (Le)0.51 mH
  • Mechanical Q (Qms)2.3
  • Electromagnetic Q (Qes)0.99
  • Total Q (Qts)0.7
Mounting Information
  • Overall Outside Diameter4.13"
  • Cutout Diameter2.88"
  • Depth1.81"
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
    (19 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.

View similar products to the Dayton Audio RS28F-4 1-1/8" Silk Dome Tweeter
in the Tweeters product category.


Dayton Audio RS28F-4 1-1/8" Silk Dome Tweeter
Dayton Audio RS28F-4 1-1/8" Silk Dome Tweeter is rated 4.9474 out of 5 by 19.
Rated 5 out of 5 by from Dash tweetsJammed these puppies into the dash of my 2014 mazda 6 with the assistance of the ole' dremel. Running 3 way active off a pioneer deh-80prs. Sounds creamy.
Date published: 2014-08-20
Rated 5 out of 5 by from Gorgeous tweets that look like an Usher Product.I bought 4 of these for two different projects. A two way with the RS28f-4 and HiVi F8's. The other project will be a three way with an RS180-8 7 in. midbass and RS270-8 10 in. woofer. I was thinkin a 2k highpass on tweet, 2k lowpass on mid, and 250-500 hz highpass on mid, 250-500k lowpass on woofer; and notch filters where necessary. Probably 2nd order electrical all around or whatever ends up working best; level freq resp, in phase between drivers, and avoid any troublesome distortion. A stepped baffle will help with phase alignment hopefully. You all know the process. I can't wait. Hope this tweet is even better than the discontinued Vifa PL27 and D27's tweets in my previous projects. (D27/P17WJ. and PL27/HiVi F8.) Thanks for making world class products for not too many duckets. Maybe I'll post my projects results. Time to bust out Soundeasy again.
Date published: 2014-08-13
Rated 5 out of 5 by from Awesome!I bought these about a month ago. This might be the best tweeters I have ever owned. It took a few days for them to break in and they keep getting better after that. The fact that you can crossover very low with these tweets is great. I tried them down to 1500 Hz with no problem but ended up with 1900 Hz in my system. They sounded best there.I love these tweets! Very smooth, extended,sweet,clean,detailed and non fatiguing! Even at higher volumes! They don't seem to change timbre/low distortion levels.I can't think of anything I don't like about them and for the price there might be 1 maybe 2 tweets out there to compare but, the ones I am thinking of won't crossover as low as this one.Just get them! You won't be sorry!
Date published: 2014-07-07
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: 2014-02-26
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: 2013-07-15

Product Q&A

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

I purchased this tweeter for my first build and was going to make a mostly matching pair.  In my notes I have the LE as 0.05mH. Did the voice coil inductance really change that much or did I write it down incorrectly?

Asked by: rteklits
The Le on our spec sheet is measured at 1kHz which will show a much higher number. Chances are it was measured at 10kHz before, which will reflect the number you have.
Answered by: MattP
Date published: 2015-01-14

sir can i get this tweeter in india

Asked by: raj bharadwaj
Please contact our sales and customer service for available stock, price and shipping options. or 800-338-0531 x2.
Answered by: MattP
Date published: 2015-01-09

I currently have the aluminum sister. Can the replacement domes for this be put in the aluminum tweeter if you take out the screen, looks like the same plate 

Asked by: steveo 1956
The silk domes will work with the aluminum motors, but not the other way around. The felt pad behind the tweeter is taller on the silk dome model, so the lower profile aluminum dome will not fit properly.
Answered by: MattP
Date published: 2014-10-21

What exactly is the sensitivity of these? The PDF your site links to states 88 db but the one on the Dayton Audio website lists it as 98 db. Further the Le is different between the two documents for the same tweeter?

Asked by: PB72
The sensitivity of these tweeters is 88 dB, the Dayton site is incorrect.
Answered by: MattP
Date published: 2014-09-08

Will theses work to replace roland ds-90a tweeters?

Asked by: ToddLedbetter
This depends on a lot of things, unfortunately we do not have a cross reference to tell us what our tweeters will replace on the market. We always recommend going to the manufacturer for direct replacements when it comes to studio monitors, but sometimes this is not possible. You want to make sure the impedance of the original tweeter is the same as the replacement which is important in terms of amplifier and crossover function, then you want to double check physical fit, so you can compare the dimensions on our website with the cabinet openings. If everything checks out it will technically work although the sound of the speaker will be different.
Answered by: MattP
Date published: 2014-03-31

What is the lowest cutoff possible using a 12db slope?

Asked by: js67
I would not cross this any lower than 1,500 with a second order filter.
Answered by: MattP
Date published: 2014-03-13


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