Dayton Audio SD315-PR 12" Passive Radiator

Brand:| Model: SD315-PR
The Dayton Audio Passive Radiators are excellent general-purpose passives suitable for replacement or for new construction.
Part # 
Weight: 2 lbs.  
List Price$42.99
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Buy 4-up$32.77
Part # 295-496
Qty:  EA
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Product Details

Dayton Audio SD315-PR 12" Passive Radiator

The Dayton Audio Passive Radiators are excellent general-purpose passives suitable for replacement or for new construction. A built-in mass disc offers a good starting point for most designs, and a convenient M5 threaded hole (screw included) allows different types of weights to be added if desired. Cosmetically and mechanically, the passives match the Shielded DVC line of subwoofers, with a poly coated paper cone and medium-roll rubber surround for clean excursion and long life. The possibilities with these passives are endless, from floor standing two-ways to small active/passive subwoofer systems.

Specifications: • Fs: 17 Hz • Vas: 5.20 cu. ft. • Qms: 3.00 • Cms: 0.45 mm/N • Mms: 200 g • Rms: 7.03 kg/s • Sd: 480 sq. cm. • Xmax: 10 mm • Dimensions: Overall diameter: 12.36", Cutout diameter: 10.71", Depth: 3.50".

Product Specifications
  • Nominal Diameter12"
Dayton Audio SD315-PR 12" Passive Radiator
  • BrandDayton Audio
  • ModelSD315-PR
  • Part Number295-496
  • UPC844632000416
  • Product CategoryPassive Radiators
  • Unit of MeasureEA
  • Product Rating
    (15 Reviews)
  • Weight2 lbs.
  • Case Qty8
  • 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.

Similar Products

View similar products to the Dayton Audio SD315-PR 12" Passive Radiator
in the Passive Radiators product category.


Dayton Audio SD315-PR 12" Passive Radiator
Dayton Audio SD315-PR 12" Passive Radiator is rated 4.6 out of 5 by 15.
Rated 5 out of 5 by from Works great with my Kenwood speakers!My Kenwood JL955WAV needed replacement radiators. The foam rubber on the old ones was just falling apart. I tried having them repaired, but I found that it would be less costly to replace them. After purchasing them and installing them, I am very satisfied with the results. They gave my Kenwood speakers a whole new life. I would recommend these radiators to anyone.
Date published: 2014-05-05
Rated 5 out of 5 by from Excellent sound & value quality!!!These are the "cats meow" in passive radiators,excellent Quality,plus the price can't be beat.
Date published: 2014-02-12
Rated 5 out of 5 by from Almost perfect replacement for the Velodyne VA1012I was concerned that a different passive radiator would change the performance and sound of my circa 1990 Velodyne VA1012 but the Dayton looks and may even sound better. I had to drill new mounting holes because the original had 8 and the Dayton has 5. I didn't add any weights.
Date published: 2014-01-18
Rated 2 out of 5 by from Sounds good, but Poor Quality workmanshipI bought this to replace the older model that used a foam surround. After barely a month of use, the cone ripped away from the spider.
Date published: 2014-01-02
Rated 5 out of 5 by from Very Good BuyBought a pair of the PR's with a pair of the goldwood 10" heavy duty woofer. Put them in a Pair of Infinity EM-103's that are older than I am and boy do they sound AWSOME!!!!! Thanks
Date published: 2010-02-28
Rated 5 out of 5 by from Passive Radiator FanPaired this passive radiator with the 12 Dayton subwoofer model RSS315HF-4. Used a 3.2 cu. ft. cabinet (which WinISD modeled as best for sealed cabinet Q) but added the passive radiator in a floor-firing, slot-loaded design tuned to be -3db at about 18 Hz. (WinISd models that to achieve similar response from a ported design would require a 4" x 11" port in a 5.8 cu. ft. cabinet - 80% larger!). Completely satisfied with outcome. No extra weight added to passive to keep it light and fast, 1 1/4" thick sides all around, all sides braced, with Dayton 240 watt amp installed. Weighs 118 lbs and lined with 1" Sonic Barrier - very solid, deep, powerful, clean sound. Very impressed. One audiophile friend says 'best bass he has ever heard!'. Passive radiator designs not only eliminate port noise and allow for deeper extension in a smaller cabinet than ported or sealed designs, but also often deliver cleaner bass (when properly done) than ported designs due to quasi-sealed enclosure. Don t let others who don t really understand this design approach deter you from experimenting with passive radiators. They can be an awesome design approach.Nice passive radiator, especially for the cost. Get the more expensive 12" if you need more xmax, such as with movie soundtracks. But this one has been pushed pretty hard and showed no signs of strain. I've run 16 and 20 Hz test tone at over 100 db with no problem. I don't suggest adding weight to passives if you can avoid it, even though you can with this one. It is an easy way to deepen the tuning freq., but I think it dulls the speed and clarity. I first tried it in a 1.6 cu. ft. adding several ounces (I think about 9 or 10) to the passive to give a similar tuning. But it sounded a bit more sluggish and dull compared to achieving the same tuning with a lighter passive (no weight added) and a bigger cabinet.
Date published: 2009-12-02

Product Q&A

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who own this product or have experience with it.
If your question requires design or troubleshooting information,
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Dayton Audio SD315-PR 12" Passive Radiator

what are the purpose of 12 inch passive radiators in stereo speakers or home audio systems.

Asked by: Dooley
A passive radiator performs the same task as a port. They are generally used when a port is too large or too long to fit into a small cabinet.
Answered by: MattP
Date published: 2014-12-17

''Hi Guys at Dayton'' I was told that my 12 inch radiators need to be replaced,one in each of my speakers.and was wondering what was the purpose of the passive radiators, my knowledge of speakers is next to none but enjoy the sound they produce very much.

Asked by: Dooley
The passive radiator behaves like a large port in a vented box, except substituting the mass of air in the port with a moving mechanical mass connected to a cone diaphragm. These passive radiators can be used as replacements, but will require careful tuning to emulate the characteristics of the original passive radiators. Do some research online for "tuning a passive radiator" for instructions on how to tune a passive radiator (achieved by adding or removing mass from the diaphragm). You won't be able to decrease the mass of these passive radiators below the amount of mass attached at the factory, but you can increase it to get the tuning frequency you need.
Answered by: DaytonAudio_Rory
Date published: 2014-12-16

What would the ideal setup using a Titanic 12' sub and a 250W Dayton sub plate? Thanks

Asked by: pepsi
This passive, even if two are used would not be an ideal choice for the Titanic woofer. They will not have the excursion capabilities at lower frequencies to keep up. I would recommend simply keeping the box sealed, around 1-1.5 cubic feet with that amplifier for the best results.
Answered by: MattP
Date published: 2014-11-03

I am looking at purchasing a set of Klipsch KG 4's that have rear, 12" passive radiators. Both PR's have seen better days, with one of them actually having a hole in it. Is there any reason or concern I may have about using this DA SD315-PR?

Asked by: yahtzeejimbob
Without knowing the moving mass of the original passive radiator I cannot say what differences there will be using one of these. If you can get that information from Klipsch you should be able to add weight to these to match, and the results shouldn't be any different than the factory PR's.
Answered by: MattP
Date published: 2014-11-03

I have Stereo Integrity HT15 D4. Box will be 3~4 ft^3 sealed. Two of these will work? Tuning would be around 20Hz.

Asked by: Seung
I would not recommend these passives with that subwoofer, they will not have anywhere near the excursion required. We might be able to run a model with the TC Sounds passives we offer to see which would be the best option. Please email our tech support with the woofer parameters so we can help you, tech@parts-express.com.
Answered by: MattP
Date published: 2014-10-30

I have 2 12" subs, going in to my car, I would like to add more bass than Had in my sealed box but want to save as much space as possible. Would one of these give me more boom or two? also how would you recommend mounting them in the box?

Asked by: MattyD
Adding a passive radiator will effectively give you a ported response and the ability to tune the enclosure, unfortunately without knowing the model of the subwoofers and size of the box I cannot say whether this will benefit you or not. These mount like any standard subwoofer driver, position in the enclosure makes no difference.
Answered by: MattP
Date published: 2014-06-09

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