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.
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Weight: 2 lbs.  
List Price$42.99
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Part # 295-496
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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.

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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
  • 2015-05-23T08:36CST
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Product Q&A

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Dayton Audio SD315-PR 12" Passive Radiator

I am considering using this (instead of porting) with a RSS210HO.  Will it work well for this application? And if so what weight ballast would be recommended in the recommended ported box volume (1.68) to achieve the 27hz fs?

Asked by: maintain_uh
The ported volume on the site is actually not accurate and I will have this fixed. The recommended volume for this woofer using a passive is 1 cubic foot. With 200 grams added you will have a tuning frequency of 30 Hz and in room response into the mid 20's.
Answered by: MattP
Date published: 2015-05-20

I have a JBL GTS-15 SUB in a box with 3.0 cu. in. (OEM 3.5) 10.5X25.5X19.5 air space. will two 12in passive radiators quiet the sub down and increase the low end (vibrates/unstable) Any reccommendatios or ideas appreciated.  Should I go with a 18in PR?

Asked by: huberb1024
I would not recommend adding a passive radiator or port of any kind to this enclosure. The recommended sealed volume is 5 cubic feet, the recommended passive or ported volume is almost 11 cubic feet. Adding a passive will not really benefit you at all here, probably only hurting more than helping. That woofer works very well in a sealed alignment so as long as it is getting clean power you shouldn't have any issues.
Answered by: MattP
Date published: 2015-05-19

What is the limit for the added mass on this passive radiator?

Asked by: djarchow
We recommend no more than doubling the Mms on these passives.
Answered by: MattP
Date published: 2015-05-05

I'd like to add one of these to reinforce the low frequencies from my Eminence Beta 12a-IIs (290-408) in a sort of Econowave setup (4.75cu. ft.). Any concerns about matching these up with a pro driver? Any issues with rear-firing it, relative to the Beta?

Asked by: Teddy_KGB
The problem with using a passive radiator in this volume (relative to woofer size) is you cannot tune one high enough. Passives are designed for enclosures that are too small to properly fit a port. With a 4.75 cubic foot enclosure you can help the bottom end by simply adding a small port. A 4" diameter, 1" long port will provide a tuning frequency of 38 Hz.
Answered by: MattP
Date published: 2015-04-23

Have a Dayton Audio ST385-8 15" Series II Woofer in sealed cabinet (13.3 cu. ft.). Building a cabinet for low organ sounds - down to 16 hz. The speaker seems to be trying to do it. Would adding two of these radiators help?

Asked by: Bach On
Unfortunately no, you would need two 15" passives in order to handle the displacement of the woofer. In that volume however you really only need to port the cabinet, passive radiators are not required in a volume that large. Two 4" diameter ports that are 15" long will tune the enclosure to 17 Hz. You will also lose some power handling capability so keep an eye on the cone excursion in order not to damage the driver at higher volume levels.
Answered by: MattP
Date published: 2015-04-14

What is the displacement of these PR's? Do I need to take their displacement into consideration when I build the box they're going in or just build my box the spec and slap them in there?

Asked by: Passiveradiator
These will displace so little it will not matter in the total volume of the enclosure.
Answered by: MattP
Date published: 2015-02-11
  • 2015-05-22T09:37CST
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