Dayton Audio SD215A-88 8" DVC Subwoofer

Brand:| Model: SD215A-88
The Dayton Audio SD215A-88 8" subwoofer speaker is one of the best bang-for-the-buck low frequency drivers available today.
  • Works equally well in sealed or vented enclosures
  • Attractive gasket-less design
  • Long-life rubber surround for years of reliable service
  • Excellent bottom octave performance
Part # 
Weight: 4.7 lbs.  
List Price$38.99
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Buy 4-up$28.35
Part # 295-484
Qty:  EA
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Product Details

Dayton Audio SD215A-88 8" DVC Subwoofer

The Dayton Audio SD215A-88 8" subwoofer speaker is one of the best bang-for-the-buck low frequency drivers available today. Dayton Audio DVC Series woofers were designed to offer the maximum performance-per-dollar. The speakers feature poly coated paper cones, wide rubber surrounds, large dual 8 ohm voice coils, vented pole pieces, and bumped back plates. Their healthy Xmax, long-throw construction, and dual voice coils make them perfect for any economical yet high-performing subwoofer speaker system.

Product Specifications
  • Nominal Diameter8"
  • Power Handling (RMS)80 Watts
  • Power Handling (max)160 Watts
  • Impedance4 ohms
  • Frequency Response31 to 2,500 Hz
  • Sensitivity85.9 dB 1W/1m
  • Voice Coil Diameter1.5"
Thiele-Small Parameters
  • Resonant Frequency (Fs)31 Hz
  • DC Resistance (Re)3.2 ohms
  • Voice Coil Inductance (Le)1.16 mH
  • Mechanical Q (Qms)3.1
  • Electromagnetic Q (Qes)0.45
  • Total Q (Qts)0.39
  • Compliance Equivalent Volume (Vas)1.35 ft.³
  • Mechanical Compliance of Suspension (Cms)0.62 mm/N
  • BL Product (BL)7.7 Tm
  • Diaphragm Mass Inc. Airload (Mms)42.4g
  • Maximum Linear Excursion (Xmax)6 mm
  • Surface Area of Cone (Sd)208.7 cm²
Materials of Construction
  • Cone MaterialCoated Paper
  • Surround MaterialRubber
  • Voice Coil Wire MaterialCopper
  • Voice Coil FormerAluminum
  • Basket / Frame MaterialSteel
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter8.5"
  • Baffle Cutout Diameter7.09"
  • Depth3.74"
  • # Mounting Holes5
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.33 ft.³
  • Sealed F368 Hz
  • Vented Volume0.95 ft.³
  • Vented F338 Hz
  • * Enclosure volume/F3s based on BassBox "optimum" calculations-
Optimum Cabinet Size *
  • Sealed Volume0.33 ft.³
  • Sealed F368 Hz
  • Vented Volume0.95 ft.³
  • Vented F338 Hz
  • * Enclosure volume/F3s based on BassBox "optimum" calculations-
Dayton Audio SD215A-88 8" DVC Subwoofer
  • BrandDayton Audio
  • ModelSD215A-88
  • Part Number295-484
  • UPC844632088698
  • Product CategorySubwoofer Drivers
  • Unit of MeasureEA
  • Product Rating
    (23 Reviews)
  • Weight4.7 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 SD215A-88 8" DVC Subwoofer
Dayton Audio SD215A-88 8" DVC Subwoofer is rated 4.6957 out of 5 by 23.
Rated 5 out of 5 by from Excellent in vented enclosureI constructed 2 enclosures, a .5 cubic ft. sealed, and a 1 cubic ft.vented (with a 2" by 6" flared port tuned to 34 z). Both sounded great, but I preferred the deeper bass of port. Surprising output for such an inexpensive driver!
Date published: 2014-04-23
Rated 4 out of 5 by from Great replacement, better price.My powered Kenwood subwoofer's foam surround evaporated into oblivian, making this tube useless. Never again will I use any drivers with foam surrounds.The DVC driver almost fit perfectly. This unit has 5 mounting holes and my sub housing and cover has 4. A few new holes in the corresponding areas and Presto!Couldn't ask for anything better.
Date published: 2014-04-08
Rated 5 out of 5 by from Great PerformanceI used this driver to build a small sub to go along with a pair of bookshelf speakers I made. I built a .85cuft box tuned to ~38hz and powered with a Dayton 25W plate amp. Perfect for a small room or computer speaker setup.
Date published: 2014-02-10
Rated 5 out of 5 by from Surprise in a small package.I have been upgrading my sound system, to include the center channel. I had a height limit, so while I'd like to have accommodate a 12" subwoofer, I had room only for an 8". So I bought two of these gems, installed and connected to my crossover. They work excellently. I highly recommend this product.
Date published: 2014-01-31
Rated 4 out of 5 by from Outstanding ValueI bought this to replace an 8" sub for a Paradigm sub my daughter toasted. Very good unit for smaller rooms.
Date published: 2014-01-24
Rated 5 out of 5 by from Great Value SubI have probably used over 20 different subs for many different applications, from no budget to tight budget. This little subwoofer provides great bang for the buck. I would recommend it to anyone looking for good bass a bargain price.
Date published: 2013-10-03

Product Q&A

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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 SD215A-88 8" DVC Subwoofer

Could I run this in parallel with a set of bookshelf's at 20wpc?

I'm looking for an economical subwoofer for a 2.1 system. I'd want to run this in parallel with a set of full range Dayton RS100-8 bookshelf's and use the Lepai TA2020 to power it all.Bad idea?Recommendations?
Asked by: Renzler
Yes, but you probably won't be happy with the results. A low efficiency sub in parallel with more efficient bookshelves and a low power amp probably won't be audible in the very lowest octave you want to boost. The addition of the sub this way might actually give you a muddy mid-bass because the sub is not crossed out of full-frequency response and both the sub and your ear are more efficient at frequencies above the low bass. I doubt you are trying to add "mid-mud" to your system, but that is likely to be the only audible result.
Answered by: Bushman
Date published: 2013-02-17

Could I use the knock-down subwoofer enclosure (part#300-7068) with this sub if I added some polyfill? I know the box is only .67ft and the sub calls for at least .95ft ported but I was hoping by adding polyfill I could make up for the smaller volume?

Asked by: Monoxide
Yes that enclosure will work. Adding poly fill will not make up for the lost cabinet volume, it will just have a slightly higher tuning frequency.
Answered by: MattP
Date published: 2014-02-19

Would this subwoofer be able to be used as an replacement to the subwoofer in Sony's MHC-EC909iP mini Hi-Fi system?

Asked by: patj88
Without access to the Sony system this is difficult to answer. From the literature, Sony specs a "7.9 inch" sub. That's odd, and if you find that the 8" Dayton doesn't fit, you are dealing with enlarging slightly a plastic enclosure. That is a messy project. I also have concern that the woofer may be too deep for the enclosure, and there is no fix if it is. Sony doesn't seem to spec the depth.Minor concerns are that Sony specs the sub at 12 ohms, and doesn't say if the existing speaker is single or double voice coil. You might have less than an optimum match between amp and speaker. The Dayton is rated at 80 watts max. The Sony system is rated at 250 max. It is remotely possible that enough power is available at the sub output to damage the Dayton.For a $190 system, I would not do this mod, but I also cannot say with certainty that it absolutely would not work.
Answered by: Bushman
Date published: 2012-10-02

could this be powered with a 25 watt amp?

i have a small 10x10 room that i would like to add a sub to and this seems like the best bang for the buck 8 inch driver i can find. so, being on a budget, can i power this successfully with dayton's SA25? is 25 watts enough power for this application?
Asked by: Dave B
No reason you can't do that. The 25 watt amp should bring things to pretty decent levels in a small room like yours. There is no harm using less then the recommended power with a subwoofer driver, you just leave a some output on the table going with the smaller amp.
Answered by: mtg90
Date published: 2013-09-17

Sealed and ported

What would be a good sized sealed enclosure with the flattest response? Also what about the smallest ported for around 40hz?thanks.
Asked by: hollowstylez
If you use a sealed enclosure, then the box should not exceed .59 ft^3. At this internal volume the speaker will be at a Qtc of 0.707 and (Fc & F3 @ 56.21). This will offer an ideal frequency response, which will reflect the music in a more natural form or in your case a flat response across the curve. I ran some calculations for a ported enclosure and came up with a box size of roughly 1.2 ft^3, with a 4.5" X 6" port. This will result in a tuning of approximately 35hz give or take 5hz. I should mention that the graph for this ported enclosure indicates a "bump" at around 40hz, FYI. I have not heard this speaker directly, but from the numbers it should sound okay. Depending on the amount of bass and SPL you are trying to achieve, you might want to consider multiples.
Answered by: n2jazznrock
Date published: 2013-06-16

Can I run a 4ohm load to each side of the voice coil?

Wondering if I can use two of the channels from a 4x100W @ 4 Ohm TK2050 Class-T Digital Audio Amplifier Board, Part #: 320-302into this DVC sub?martin
Asked by: marloubow
It is perfectly acceptable to connect one amp channel to each side of this driver. A 4 ohm amplifier will not have any trouble driving the 8 ohm load.
Answered by: Chrisf
Date published: 2012-12-19

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