Dayton Audio RS125-8 5" Reference Woofer

Brand:| Model: RS125-8
Dayton Audio Reference Series RS125-8 5" woofers deliver exceptional clarity, detail, and dynamics—and of course, incredibly low distortion.
  • One of the lowest distortion, highest resolution driver series available
  • Low-distortion high-excursion motor system with two short-circuit paths
  • Compliant suspension and rigid black anodized aluminum cone for strong bass performance
  • Heavy-duty 6-hole cast frame, low-loss rubber surround, and solid aluminum phase plug
  • Designed and engineered in the USA
Part # 
Weight: 2.15 lbs.  
List Price$40.99
You Save22%
Your Price
Buy 4-up$30.07
Part # 295-353
Qty:  EA
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Product Details

Dayton Audio RS125-8 5" Reference Woofer

The Dayton Audio Reference Series was conceived with one goal in mind—low distortion. Each speaker was carefully designed and optimized to offer the highest performance with the lowest distortion levels. At the same time, by focusing on features that contribute to sound quality and eliminating unnecessary frills, the drivers offer value unparalleled in the industry. Dayton Audio Reference Series RS125-8 5" woofers deliver exceptional clarity, detail, and dynamics—and of course, incredibly low distortion.

Product Specifications
  • Nominal Diameter5"
  • Power Handling (RMS)25 Watts
  • Power Handling (max)50 Watts
  • Impedance8 ohms
  • Frequency Response65 to 5,400 Hz
  • Sensitivity87 dB 2.83V/1m
  • Sensitivity86.92 dB 1W/1m
  • Voice Coil Diameter1"
Thiele-Small Parameters
  • Resonant Frequency (Fs)65 Hz
  • DC Resistance (Re)6.16 ohms
  • Voice Coil Inductance (Le)0.57 mH
  • Mechanical Q (Qms)1.74
  • Electromagnetic Q (Qes)0.42
  • Total Q (Qts)0.34
  • Compliance Equivalent Volume (Vas)0.17 ft.³
  • Mechanical Compliance of Suspension (Cms)1.22 mm/N
  • BL Product (BL)5.69 Tm
  • Diaphragm Mass Inc. Airload (Mms)5.93g
  • Maximum Linear Excursion (Xmax)4 mm
  • Surface Area of Cone (Sd)52.8 cm²
Materials of Construction
  • Cone MaterialAluminum
  • Surround MaterialRubber
  • Voice Coil Wire MaterialCopper
  • Voice Coil FormerAluminum
  • Basket / Frame MaterialCast Aluminum
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter4.94"
  • Baffle Cutout Diameter3.7"
  • Depth2.17"
  • Bolt Circle Diameter4.43"
  • # Mounting Holes6
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.07 ft.³
  • Sealed F3162 Hz
  • Vented Volume0.1 ft.³
  • Vented F391 Hz
Dayton Audio RS125-8 5" Reference Woofer
  • BrandDayton Audio
  • ModelRS125-8
  • Part Number295-353
  • UPC844632088735
  • Product CategoryWoofers
  • Unit of MeasureEA
  • Product Rating
    (7 Reviews)
  • Weight2.15 lbs.
  • Case Qty12
  • California Prop 65

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

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Dayton Audio RS125-8 5" Reference Woofer
Dayton Audio RS125-8 5" Reference Woofer is rated 5.0 out of 5 by 7.
Rated 5 out of 5 by from Excellent Dayton Audio RS125-8 5" (8 ohm, 5" speakers)I used these to replace the internal mid-sub speakers of my PSR-S910 keyboard. The old speakers are 6 ohm, but these 8-ohm speakers work fine too. The new speakers sound much cleaner, more dynamic range, and overall better than the old speakers across wide range of vol, from minimum to max. At high vol, the bass sounds so clean, nice thump, and no distortion, which is so nice! Highly recommended speakers!
Date published: 2013-11-12
Rated 5 out of 5 by from Excellent performance in a 2-way bookshelfHad an itch to build a couple bookshelf speakers for after-hours use in my cubicle at work. The response and ported volume requirements for the RS125-8 looked like the right size, and since PE had a special price offer on the Hi-Vi TN25 tweeter, I ordered two sets and went to work.Result: fantastic! A pair of 9-10L boxes, reduced slightly by the volume of the port and acoustic materials, produced a system with response from about 57-22kHz at 85dB, which is adequate for nearfield listening. I constructed a custom second-order crossover using a Linkwitz-Riley design at 5kHz along with a Zobel network for the woofer and a delay lattice for the tweeter, tuned for 25mm offset. The tweeter is also L-padded by about 3dB. Each box is lined with 1.5-inch acoustic eggcrate foam and 50% stuffed with fiberglass.Best imaging I've heard so far from a pair of speakers, and getting response slightly below 60Hz out of such a small driver is definitely a treat. The Dayton Reference series will be near the top of my list for future builds.
Date published: 2013-08-29
Rated 5 out of 5 by from All That It's Cracked Up To BeThe term a "5-inch woofer" may seem like anoxymoron, but this speaker delivers. No, it doesnot have the booming low-end response of a largerdriver, but if space is a limiting factor, it canserve as a woofer in a small two-way system. Iused 4 in a line array center channel speaker(pictured) along with a couple of RS28F-4's, andthat arrangement has worked out well -- a niceaddition to my main home sound system. So, if youneed a little woofer for a little speaker system,give this a try.
Date published: 2013-04-15
Rated 5 out of 5 by from Better than I expectedUsed these to replace the woofers in Boston HD5 speakers. Made a small adapter flange of 1/8" masonite. Also replaced the tweeter capacitor with a Dayton polypropylene.Results were excellent. The unpleasant heavy boom of the original woofers was mostly gone. Sound is very clean. Plenty of bass. Very little of the usual small-speaker squeezed sound. Bass will go very deep, maybe even deeper than the original larger woofers.It is a good idea, I believe, to replace old commercial-speaker woofers that boom too much, with smaller woofers. Less boom and more deep is the mathematically expected result, and it turned out that way in this case.One of the speakers originally was defective and PE dealt with it very efficiently and pleasantly.
Date published: 2013-03-21
Rated 5 out of 5 by from Exceeded expectation!I used it as mid-woofer in line arrays project. The low-pass filter is set at 2.2 kHz and the high-pass filter is set at 250 Hz. The slope of these filters are all set in 16th-order (96 dB). Everey speaker used eight RS125-8 mid-woofers and six tweeters. The results is more than my expectation! The sound is very clean, rapid, detail but not fatigue. I'll buy again when I needed.
Date published: 2012-02-24
Rated 5 out of 5 by from Dayton Audio RS125-8 5" Reference WooferI bought this as a replacement for the speaker in a Radio Shack Realistic speaker where the foam part had fell apart.Not able to find the right foam size I used this speaker as a replacement. Not an exact fit, but it works just fine, just what I wanted for the price.I found that RS doesn't sell small speakers anymore.
Date published: 2011-12-23

Product Q&A

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Dayton Audio RS125-8 5" Reference Woofer

A forum stated this was a good replacement for a Dahlquist DQ-10 Midbass woofer ? Also should it be replaced with a 4 or 8 ohm ?

Asked by: Jim Ja
We do not have a cross reference available for this type of thing. Please contact our tech support for more help with this question, tech@parts-express.com or 800-338-0531 x1.
Answered by: MattP
Date published: 2014-10-08

I have two RS125S-8. "S" is for shielded. Is the RS125-8 close enough spec wise to use them in a MTM config with the RS125S-8?

Asked by: vincetronic
Unfortunately these will be different enough I would not recommend using them in conjunction with the older versions.
Answered by: MattP
Date published: 2014-08-12

can i use this driver as a mid range between 800hz and 5klz

Asked by: panama angel
Yes this will work well in that passband.
Answered by: MattP
Date published: 2013-10-15

does this work well with the pre built 3 way x-over? also it is paired with goldwood 1248. any suggestions for this combo?

The crossover is th 800/5000 hz 100 watt
Asked by: pleasing the wife
Answered by: bigmike
Date published: 2012-01-25

What is the best crossover and tweeters to pair this for a small dynamic speaker (sealed)

hello, I am building a custom speakers into my wall and constrained for width..so I need small woofer with max performance
Asked by: deno
This is definitely one of the better small woofers out there for the money, but it's a bit difficult to work with due to its aluminum cone. Metal speaker cones tend to have high amounts of cone breakup at high frequencies, which needs to be compensated for in the crossover. This particular speaker has a moderate breakup at 7kHz (a 10dB peak), and a strong breakup at 11kHz (20dB peak).To take care of the breakup, a low crossover frequency, steep crossover slope, and/or notch filters are needed. At the very least, I'd say a 4th-order crossover at 2.5kHz would be needed, or a 2nd-order at 2kHz or less. For even better results, adding notch filters at 7kHz and 11kHz would help to get rid of the breakup. I've attached a link to a pre-made crossover that would work alright for this, but, as is always the case with pre-made crossovers, it won't be optimal for various reasons (it doesn't take into account the actual impedance of the speakers at the crossover point, it doesn't have a Zobel network, there are no notch filters for the breakups, and its crossover frequency and slope are only just acceptable for this speaker, considering the breakups). But, unless you have really good ears then you probably won't notice too many problems with it.Now, since you need to use a low crossover frequency, the selection of tweeters is fairly limited because the tweeter has to handle a relatively large amount of low frequency content. You'll need a tweeter that is physically quite large (1" or larger dome tweeter) with a low Fs. The Dayton DC28FS-8 would be alright for this, but really it's best used with a 2nd-order crossover point of 2.5kHz or higher. The Dayton RS28 would do a bit better, but it's only available in a 4 ohm version, which wouldn't work with the crossover I linked to (because it only works with 8 ohm tweeters), so a series resistor would have to be added to it to bring it up to 8 ohms so that it is compatible with the crossover (which would reduce its sensitivity, but that needs to be done anyways to match the tweeter's sensitivity to the woofer). Other options that would be ok, but still would not be optimal, are the Vifa XT25 and Vifa DX25. Again, they're best suited for about 2.5kHz or higher when doing 2nd-order, but 2kHz 2nd-order wouldn't be too bad. If a 4th-order crossover at 2kHz were used instead (or a 2.5kHz 2nd-order), then all of these tweeters would be very well-suited to this application, but that would require building the crossover yourself.Finally, you will need use resistors to compensate for the sensitivity difference between the tweeter and the woofer. To do this, you will need an L-pad, a series resistor, or both. In the case of the 4-ohm tweeters, you will absolutely need a series resistor of 4 ohms in order to bring the effective resistance up to 8ohms (as mentioned above). Doing so will reduce the tweeter's sensitivity by 6dB, which might be too much attenuation, in which case that tweeter wouldn't be suited for this application. If more than 6dB is needed then an L-pad can be added. For 8 ohm tweeters, all that would be needed is an L-pad. To determine the configuration of the L-pad, and the resistor values needed, search for an L-pad calculator online.
Answered by: eboyer
Date published: 2013-03-16

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