Dayton Audio RS125-4 5" Reference Woofer 4 Ohm

Brand:|Model: RS125-4
The Dayton Audio Reference Series sets a new standard of value in high-performance loudspeaker drivers. Woofer features a black anodized cone, heavy-duty 6-hole cast frame, low-loss rubber surround, solid aluminum phase plug, and gold terminals.
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List Price$41.99
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Your Price
Buy 4+$30.51
Part # 295-370
  • 4 ohm impedance is perfect for series pairs in MTMs and center channel speakers
  • Excellent car audio midrange/midbass
  • High-end low-distortion motor with two shorting paths to reduce inductance

Product Details

Dayton Audio RS125-4 5" Reference Woofer 4 Ohm

The Dayton Audio Reference Series sets a new standard of value in high-performance loudspeaker drivers. Utilizing a low-distortion motor system with two short-circuit paths and a rigid aluminum cone, the Reference Series can outperform drivers that cost several times the price. Their low-distortion characteristics and high excursion capabilities provide exceptional clarity, detail, and dynamics. Woofer features a black anodized cone, heavy-duty 6-hole cast frame, low-loss rubber surround, solid aluminum phase plug, and gold terminals.

Product Specifications
  • Nominal Diameter5"
  • Power Handling (RMS)30 Watts
  • Power Handling (max)60 Watts
  • Impedance4 ohms
  • Frequency Response65 to 5,400 Hz
  • Sensitivity89.9 dB 2.83V/1m
  • Voice Coil Diameter1"
Thiele-Small Parameters
  • Resonant Frequency (Fs)57.2 Hz
  • DC Resistance (Re)2.9 ohms
  • Voice Coil Inductance (Le)0.28 mH
  • Mechanical Q (Qms)2.04
  • Electromagnetic Q (Qes)0.45
  • Total Q (Qts)0.37
  • Compliance Equivalent Volume (Vas)0.187 ft.³
  • Mechanical Compliance of Suspension (Cms)1.35 mm/N
  • BL Product (BL)3.63 Tm
  • Diaphragm Mass Inc. Airload (Mms)5.7g
  • 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"
  • Depth2.13"
  • Bolt Circle Diameter4.43"
  • # Mounting Holes6
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.05 ft.³
  • Sealed F3139 Hz
  • Vented Volume0.12 ft.³
  • Vented F379 Hz
Dayton Audio RS125-4 5" Reference Woofer 4 Ohm
  • BrandDayton Audio
  • ModelRS125-4
  • Part Number295-370
  • UPC844632056321
  • Product CategoryWoofers
  • Unit of MeasureEA
  • Product Rating
    (13 Reviews)
  • Weight2.6 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.

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Dayton Audio RS125-4 5" Reference Woofer 4 Ohm
Dayton Audio RS125-4 5" Reference Woofer 4 Ohm is rated 4.0 out of 5 by 13.
Rated 4 out of 5 by from Roughly five inchesGood clean sounding mid. I'm using two wired in series in an MTMW configuration with the 8" reference as the bass in the lower cabinet. I'm glad i used two or it would be able to keep up. These are crossed over 2500 to 500 and give effortless reference quality sound, very smooth and crisp. No audible peaks noted.
Date published: 2014-02-12
Rated 5 out of 5 by from Polk Audio CS350-LS Replacement DriversI purchase 4 of these as replacement drivers for my Polk Audio CS350-LS Center Channel and WOW what a perfect replacement driver, the sound is incredible and look amazing and the bass response is nothing but STELLAR - 4mm of xmax!!!!. I'm powering these with a Hafler Xl-280 @ 180 w/ch into 4 ohms and they sound beautiful and handle the power with ease. I used a piece of 5mm Luan plywood from Home Depot $7.50 and a 5" and 4" Hole saw to cut the spacer since they are about a 1mm to wide in diameter but the screw holes match up exactly for alignment purposes. Don't throw your perfect Polk CS350-LS away upgrade it to 2011 with these drivers, I have compared this right next to the original and can not tell the difference. These are gorgeous speakers and make your center channel look so nice you don't want to put the cover back on it. You will not be disappointed with the sound or looks of these and the cross over is perfect.
Date published: 2011-04-01
Rated 4 out of 5 by from Replacement for JBL XE-1 woofer.Had a couple of JBL XE1 with blown woofers.Box is 12 x 7,5 x 8.5 inches (0.4cuft) with a bass reflex port of about 3 inches diameter.Driver is the same size of the old JBL203G.Port tube needs to be resized to get a propper bass: diameter should be 2 inches, length 5 inches. I used foam tube to make the arrangement.Stock Xover (1st order butterworth) keeps impedance over 4ohms in all frequencies, gives a smooth transition to XE1 tweeter and helps with the 96db to 91db efficiency difference.The result excellent: very deep bass, very fine mids, and the excellent highs the XE1 brights for. In an average room, they give the presence of a much larger speakers, even without subwoofer.I think that this should not be considered a mid-woofer: it is a definitive woofer!
Date published: 2010-05-07
Rated 4 out of 5 by from Quality DriverPurchased as a drop-in replacement for a small bookshelf (Pinnacle 2), my 1st concern was physical size. This driver is small for a 5", worked for me. I did no port or crossover mods, and still ended up with decent tight bass and a little too much brightness. Probably to be expected with the aluminum cone and stock x-over. Well-made, solid performer.
Date published: 2010-02-02
Rated 3 out of 5 by from Decent Bass and Clean Midrange - Not Easy to UseI used this woofer in a mini, 2-way system paired with a Pyramid, titanium horn tweeter. I originally used a 1.5 liter ported box tuned for an F3 of 85Hz, but found that with its limited x-max and cone area, this woofer would bottom its suspension on some low frequency music material when driven at moderate (1-5W) volume levels. I switched to a sealed box of the same volume, with some loss in bass output, but this cured the suspension bottoming. For the x-over, I wound up using a 4th order, 2.5kHz network with an additional LCR trap at 7kHz to cure the very shrill sounding cone breakup. This was not the easiest woofer to use, but the resulting system can play quite loud, with decent bass and a very clean midrange.
Date published: 2008-08-03
Rated 2 out of 5 by from Not efficient after crossover levels loud mids!This might look like the other drivers in the RS series, but its performance and character are nowhere close. I bought it thinking its efficiency would be great. That is certainly not the case. Efficiency is gone after frequency response is leveled by crossover. Perhaps it is useful for a PA speaker system, because its super-loud, high compression midrange could reach quite the distance outdoors.
Date published: 2008-03-26
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Product Q&A

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Dayton Audio RS125-4 5" Reference Woofer 4 Ohm

Will You guys be getting these back in again?? Or will I have to go for the paper cone version??

Asked by: Shabe
Yes these are a normally stocked item, they are due in in a couple weeks.
Answered by: MattP
Date published: 2014-07-15

THinking of using this in a car audio application.  How will it behave open air (IB)...? It will be in a 3 way system roughly 1500-3000hz. In that configuration will there be any issues running this off a 50 watt amp?

Asked by: Petemoss
At 1,500 Hz it will not matter if it is mounted IB or not. 50 watts will be plenty for this driver.
Answered by: MattP
Date published: 2014-05-19

What would be the optimum enclosure for this speaker?

I am considering this as a replacement for a Peerless 5" (Xmax ~2 to 2.5mm) for a home theatre system that is bottoming out on strong percussive sounds. The enclosure interior is 4.5"x8.5"x14" with a 1.5d x 3.5d port. Would this be a suitable replacement and would I have to change the port? Would a sealed enclosure be a better choice?
Asked by: hmarkison
I've modeled this speaker in your enclosure with your current port. This actually works out to work very well with this speaker! You should expect clean output down into the 50 Hz region without any changes.
Answered by: mikevv
Date published: 2011-04-07
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