Dayton Audio SD270-PR 10" Passive Radiator

Brand:| Model: SD270-PR
The Dayton Audio Passive Radiators are excellent general-purpose passives suitable for replacement or for new construction.
Part # 
Weight: 1.5 lbs.  
List Price$32.99
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Part # 295-494
Qty:  EA
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Product Details

Dayton Audio SD270-PR 10" 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: 19.5 Hz • Vas: 3.90 cu. ft. • Qms: 2.50 • Cms: 0.67 mm/N • Mms: 100 g • Rms: 4.89 kg/s • Sd: 340 sq. cm. • Xmax: 10 mm • Dimensions: Overall diameter: 10.63", Cutout diameter: 8.94", Depth: 2.81".


Product Specifications
  • Nominal Diameter10"
Dayton Audio SD270-PR 10" Passive Radiator
  • BrandDayton Audio
  • ModelSD270-PR
  • Part Number295-494
  • UPC844632000409
  • Product CategoryPassive Radiators
  • Unit of MeasureEA
  • Product Rating
    (21 Reviews)
  • Weight1.5 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.

Similar Products

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Dayton Audio SD270-PR 10" Passive Radiator
Dayton Audio SD270-PR 10" Passive Radiator is rated 4.4762 out of 5 by 21.
Rated 5 out of 5 by from Great Quality!I have a pair of Radian Research 2-10-3 loudspeakers. They were made by Becker in the late 70s early 80s. They have two ten inch woofers and a passive on the back. The passives were done and I ordered these as replacements. Super fast shipping and very solid passives. I got them I. Without too much trouble and it completely restored the bass of these speakers.
Date published: 2015-05-09
Rated 4 out of 5 by from Replacement Passive Radiator Hits the mark!Replacing stereo components such as cabinet speakers is for me a on going process. And the advent of the new passive radiator, the screw holes didn't line up, so a little craftiness was no problem to make it fit. The sound is good, no vibration and able to handle my 200 watts.
Date published: 2014-07-16
Rated 5 out of 5 by from Great performerI used this to replace the passive radiator in my 20 year old Velodyne subwoofer. After a little modification to the speaker cabinet opening size, the sub has never sounded better.
Date published: 2014-04-07
Rated 5 out of 5 by from Dayton Audio SD270-PR Passive Radiator ReviewI have a pair of Synergistics speakers from Tokyo Shapiro's in the 80's. The passive radiators were decomposed. I bought a pair of these 10" radiators. I think these speakers are better now than when they were new. Lots of bass and air movement. I plan to replace the 8" Woofers with speakers from Parts Express. Thank you. Would definitely buy again 1000%.
Date published: 2014-01-22
Rated 5 out of 5 by from Good valuePurchased the 10" passive radiator to replace the blown one in my 15 year old Velodyne VA 810 XI subwoofer I am restoring to use with a secondary stereo. It works great with the new driver. Very satisfied.
Date published: 2013-10-17
Rated 4 out of 5 by from VA-8100x replacementI dropped this in to replace my very aged Velodyne, broken, 10" radiator and I was very surprised at the quality of the cone assembly. It's very good. Much better than I would expect at the price point. The surround is pliant and good quality and better than the original. For the price I paid this was a no brainer. I've not taken measurements yet but I'm very happy with the results.
Date published: 2011-03-07
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Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email tech@parts-expresss.com  for a prompt reply.
Dayton Audio SD270-PR 10" Passive Radiator

I have two of these PRs, a Yung SD500 (no boost) and a Dayton TIT280C-4 10" Mk III subwoofer. Will these play well together? If so, please recommend enclosure volume and weight to add to each PR for F3 about 25-30 hz. If not, what would be best? Thanks!

Asked by: Pun Gent
Unfortunately these will not work well together. The passives will not handle enough weight for that low a tuning frequency and also do not have the excursion capability to keep up with the woofer. We actually do not have a passive radiator that will be a good match, so a standard sealed design would be the best option.
Answered by: MattP
Date published: 2015-06-24

I want to build a little 3 speaker system for my patio and I was thinking of using a SD215A in a 1.25ft3 box with a 120 watt plate amp. could I use a SD 270 passive for this or should I use a 12" or should I just port it?

Asked by: golfdaddy52
In that volume I would recommend simply porting the enclosure. A 2-1/2" diameter, 8-1/2" long port will tune the box to 32 Hz.
Answered by: MattP
Date published: 2015-05-26

Regarding the 1.5 cu. ft. Box with 2 w8-740p drivers and 4 of the pr's, do I need to stuff the boxes for best results and if so how much would you suggest?

Asked by: Gilscales
We recommend a half pound of stuffing per cubic foot of airspace to start. There will be very little difference with stuffing amounts in this application.
Answered by: MattP
Date published: 2015-05-13

Would like to build a 1.5 cu. ft. Box with 2 tang band w8-740p drivers and 4 of theses 10" pr's would this work for a car audio sub and if so how much weight would I need to add for proper tuning?

Asked by: Gilscales
This design should work well. I would recommend adding 100 grams to each passive which will tune the enclosure to about 38 Hz.
Answered by: MattP
Date published: 2015-05-09

Would this work with an Infinity Ref 1060w in about .9 cu/ft sealed on 200 watts rms?

Asked by: kb86
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: MattW
Date published: 2015-03-31

What is the maximin amout of weight (in grams) that can safely be added to this passive radiator?

Asked by: Jam1561
We recommend no more than double the Mms for these passives.
Answered by: MattP
Date published: 2015-02-17
  • 2015-07-02T09:10CST
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