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Dayton Audio SD315-PR 12" Passive Radiator

Brand:|Model: SD315-PR|Part # 295-496
The Dayton Audio Passive Radiators are excellent general-purpose passives suitable for replacement or for new construction.
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Part # 295-496

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".

Note: Adding mass to the passive radiator will decrease Fs and increase Qms.

Tip: As a general rule the passive radiator(s) should be able to move double the volume of air as the active woofer(s)/subwoofer(s) in the system. For example: A passive radiator system for a 12" woofer/subwoofer that has 10mm of X-max would require 2-12" passive radiators with 10mm of X-max. For single passive radiator systems, it is common to use a passive that is larger than the active woofer(s)/subwoofer(s).

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
    (16 Reviews)
  • Weight2 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 SD315-PR 12" Passive Radiator
Dayton Audio SD315-PR 12" Passive Radiator is rated 4.375 out of 5 by 16.
Rated 1 out of 5 by from 3 out of 4 tore apart quicklyI bought 4 of these to use 2 each in dual enclosures, paired with a single 15" driver in each enclosure. Without pushing them hard at all, 3 out of 4 of them had the cones tear away from the spiders, almost immediately (less than 30 minutes of use). Basically, the extremely weak glue failed. The very nice Parts Express tech advised me that the enclosures I was using were too large for these, but if I sent them back, they'd replace them. I'm no expert, so maybe he's right, but that seems pretty weak to me. So, I chose not to send them back, because if they're not going to work for my enclosures, why do I need new ones? Instead, I'm loading the cone/spider joints with super glue, and maybe some other flexible adhesive like silicone. If they fail again, I'll throw them away, consider the $150 I flushed down the toilet to a life lesson, and look for other options.
Date published: 2015-05-27
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
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Product Q&A

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Dayton Audio SD315-PR 12" Passive Radiator

Two questions here: Can I use two of these 12" PRs with 2X 8" subs RSS210HO-8 in parallel in a 0.75 cf knockdown, like the Dayton Audio TW-0.75MA 0.75 ft³?   Or do I need to double the cabinet size for the 2X 8" drivers, even with the PRs?

Asked by: danBdB
It looks like the larger cabinet would be the better overall alignment, but both can work. In 1.5 cubic feet you would add 200 grams of mass which will give a F3 of 34 hz. In the .75 cubic foot box you would add 400 grams of mass to each radiator and it would have an f3 of 45Hz.
Answered by: Chrisf
Date published: 2016-02-02

I have a old Sony cabinet that the total volume is 1.3542cft, will the Series II and this radiator do well together? The measurements are 13x36x8 inches

Asked by: Wizardrule
This requires a bit more information in order to proceed. Please contact our tech support for more help with this question, or 800-338-0531 x1.
Answered by: MattP
Date published: 2015-12-28

Is polyfil a standard speaker/sub cabinet build requirement or just to tune as necessary?

Asked by: ranger john
It is not required but it is recommended. We do recommend tuning to your liking.
Answered by: MattP
Date published: 2016-01-15

Plan on const sealed 0.8 cu ft box > KFC-XW1200F 350 watt sub. Xmax 8.5 mm Qms 2.897 Qts 0.544 Vas 2.214 cu ft. Box internals: 19.75" x 14.25" x 4.875" Like to get freq resp down to mid 20's. Reconfig to ported or PR(offset back to back)?. Viable?

Asked by: ranger john
Unfortunately this woofer is not very well suited for use with a passive radiator or a vented design. If you can afford the space, 4 cubic feet is recommended which would negate the need for a passive anyway - although it will reach into the 20's. This does like a sealed enclosure or about 1 cubic foot.
Answered by: MattP
Date published: 2016-01-15

I'm looking for a PR to use with a Peerless XLS 12".   Will this PR work with 3-500 watt plate amp in a 1.5ft box.  Will 2 be needed?

Asked by: Loudvegas
Two would be recommended with 200 grams added to each. This will provide a tuning frequency of about 30 Hz.
Answered by: MattP
Date published: 2015-12-03

I just have two W8-740P for my Toyota extracab truck. I want these (2) PR's to extend lower frequency response, not SPL. 100 or 500 watts per sub. What box size for 20 hz response, please. Thanks

Asked by: ben60
Unfortunately you won't be able to reach 20 Hz with reasonable output using this driver. A pair of those passives would require 200 grams of weight each just to reach a tuning frequency of ~48 Hz. This is about the lowest tuning frequency possible, even using a smaller PR.
Answered by: MattP
Date published: 2015-10-14
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