Dayton Audio ST255-8 10" Series II Woofer

Brand:|Model: ST255-8
The new generation of Dayton Audio Heavy Duty woofers features natural sounding paper cones that are chemically treated for extra durability and long life. Great for pro sound use or as a home subwoofer.
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List Price$115.99
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Part # 295-110
  • Large voicecoil provides high efficiency power and low distortion
  • Made in USA
  • Natural sounding paper cone

Product Details

Dayton Audio ST255-8 10" Series II Woofer

The new generation of Dayton Audio Heavy Duty woofers features natural sounding paper cones that are chemically treated for extra durability and long life. The combination of a heavy magnet structure, vented pole piece, bumped backplate, and large voice coil provides excellent power handling capability with high efficiency and very low distortion. Unique suspension system consists of a rubber surround and large flat spider for superior damping characteristics and outstanding transient response. Made in the USA.

Product Specifications
  • Nominal Diameter10"
  • Power Handling (RMS)250 Watts
  • Power Handling (max)500 Watts
  • Impedance8 ohms
  • Frequency Response35 to 3,000 Hz
  • Sensitivity92.7 dB 2.83V/1m
  • Voice Coil Diameter2.51"
  • Magnet Weight56 oz.
Thiele-Small Parameters
  • Resonant Frequency (Fs)43.7 Hz
  • DC Resistance (Re)6.4 ohms
  • Voice Coil Inductance (Le)1.97 mH
  • Mechanical Q (Qms)8.58
  • Electromagnetic Q (Qes)0.41
  • Total Q (Qts)0.39
  • Compliance Equivalent Volume (Vas)1.69 ft.³
  • Mechanical Compliance of Suspension (Cms)0.28 mm/N
  • BL Product (BL)14.3 Tm
  • Diaphragm Mass Inc. Airload (Mms)48.1g
  • Maximum Linear Excursion (Xmax)5.5 mm
  • Surface Area of Cone (Sd)339.8 cm²
Materials of Construction
  • Cone MaterialCoated Paper
  • Surround MaterialRubber
  • Voice Coil Wire MaterialCopper
  • Voice Coil FormerKapton® / Polyimide
  • Basket / Frame MaterialSteel
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter10.08"
  • Baffle Cutout Diameter9.04"
  • Depth4.38"
  • Bolt Circle Diameter9.66"
  • # Mounting Holes8
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.42 ft.³
  • Sealed F391 Hz
  • Vented Volume1 ft.³
  • Vented F356 Hz
Dayton Audio ST255-8 10" Series II Woofer
  • BrandDayton Audio
  • ModelST255-8
  • Part Number295-110
  • UPC844632000034
  • Product CategoryWoofers
  • Unit of MeasureEA
  • Product Rating
    (36 Reviews)
  • Weight12.81 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 ST255-8 10" Series II Woofer
Dayton Audio ST255-8 10" Series II Woofer is rated 4.3611 out of 5 by 36.
Rated 5 out of 5 by from Initial Review....This woofer is great, breaking it in and also replacing some other speakers in my vehicle. Put it in roughly a .5 ft^3 box (.44 ft^3 sans woofer displacement), 'hermetically' sealed and lightly damped on 5 inside panels, but not the baffle; .5" PSA dampening material used. Throwing right at the indicated specs for power usage, RMS & Peak. Throws out some great bass, with good impact for merely one 10" woofer, and it also hits the lows well and it's not even close to fully acclimated to the box and power usage, etc. I do highly recommend this speaker (per application and desire, though, and it) has decent sensitivity, isn't overly mass loaded and within the optimal power range of the amp I'm using, along with the load it provides. RMS output is about 115dB and peak is somewhat higher with the config I'm using. Also, 150Hz down, electronically, is how I'm going with its crossover point, as I like some beefy bass guitar tuneage, as well as many other varieties of music, which this woof/sub is doing well with.Regards!
Date published: 2015-03-13
Rated 5 out of 5 by from Replacements for Electro-Voice Sentry VI've been carting around a pair of old studio monitors for years. Originally purchased around 1977. The woofers were shot and these fine units spent 25 years in the basement. I home built an entire home theater system from Parts Express products 10 years ago and was thrilled to see they're still around. These woofers are perfect replacements for the EV Sentry V. They fit perfectly and although the originals had only 4 mounting holes these lined up precisely. The connection tabs were slightly larger than the original EV drivers and I opted for direct solder. The sound is unbelievable. This is a vented design and is efficient, these woofers match very well. Could not be more impressed. Build and packaging appears to be top notch. The entire purchasing experience was first class.
Date published: 2014-12-09
Rated 5 out of 5 by from Great Subwoofer driverI bought this woofer to replace a worn 10" driver in my subwoofer and it sounds better now than it ever did! Love it!
Date published: 2014-07-13
Rated 5 out of 5 by from Very HappyMy wife brought some Bose 501 speakers home from a garage sale because she liked the grill covers. They will fit in with our retro MCM style, so that is the only way i can get speakers in the house. One woofer was missing and the other's surround was falling apart. The 501's and the Bose line in general doesn't get much credibility in the audiophile world, so I took the opportunity to upgrade the main woofer with these. The cabinets seem sturdy enough to warrant keeping. I tried the Dayton Audio designer series first, but they were a tiny bit to big in diameter to fit in the cabinet, which was too bad since the range on those looked like a good fit with the crossover's in the 501's. So Part Express was great about letting me return those and I went with a more expensive speaker (Series II) and double checked the measurements. These dropped in fine and the magnet is huge and heavy. I have no idea what 501's sounded like originally, but mine sound nice and are going to be awesome for any party because the bass really sounds nice and rich and tight at high volume. BTW the "direct energy control" function of the 501's, really work. I thought it was just a gimmick.
Date published: 2014-07-06
Rated 5 out of 5 by from Nice sounding Woofers!I had purchased 4 of these Dayton 10" Woofers and 3 of them arrived with the same assembley defect. However Parts Express was outstanding in their customer service and replaced them very quickly. I figure it was just something that happened during part of this production run, as they are highly regarded Woofers.This is a great place to do business!
Date published: 2014-01-31
Rated 4 out of 5 by from Very good replacement woofer for EV Interface C (s4)Used as a replacement woofer in my 1983 Electro Voice Interface C (series 4) speakers. I am pleased with the speaker performance. The EVs now sound great. The only downside is the external speaker surface coating is a bit sticky.
Date published: 2013-09-04
  • 2015-11-27T06:21CST
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  • clientName_PartsExpressInternational

Product Q&A

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Dayton Audio ST255-8 10" Series II Woofer

I would be fitting these in a pair of old ar-2a's. They are not ported but could be. Also, I am using a Pioneer sx-1980 to power them. Would you recommend these as a good replacement?

Asked by: molinholin
Please contact our tech support for more help with this question, or 800-338-0531 x1.
Answered by: MattP
Date published: 2015-11-03

Using this woofer in a 1.35 cu.ft. enclosure, x-over at 2.5K, what is the optimum port size? There is currently a 2" diam. x 4" long port. Can I modify this port and/or add another port?

Asked by: mcm62
I would recommend adding a second 2" diameter, 4" long port to this enclosure. It will help reduce port noise and bring the tuning frequency up to a more reasonable frequency of 40 Hz.
Answered by: MattP
Date published: 2015-08-06

are these speaker will be fit the Boston Acoustic Model VR975.Thanks

Asked by: trung
We do not have a cross reference available for this type of thing. Please contact our tech support for more help with this question, or 800-338-0531 x1.
Answered by: MattP
Date published: 2015-06-18

I hava a bash 300s 300 watts  and this woofer works for my amp?? Becase i needa home woofer

Asked by: el chupa cabras
Yes this woofer will work with that amplifier but it will only produce about half of its rated power due to an 8 ohm load. Please contact our tech support for more help with this question, or 800-338-0531 x1.
Answered by: MattP
Date published: 2015-05-13

Hi, Im have combo TNT150 and my ext.spker is a 2 10" cab. At 4 0ms. How can i fix it to make it an 8 0m. Do the 16 om. 10" exist.

Asked by: Adolf
Please contact our tech support for more help with this question, or 800-338-0531 x1.
Answered by: MattP
Date published: 2015-02-23

I am looking at this driver to handle mid bass duty in a sealed 1 ft3 sealed enclosure. Need a flat response from 80-250hz. Is this a good option? Need high Qms. One of your comments this driver is not a good candidate for a sealed enclosure.

Asked by: Aleph30000
This will work fine in that range. Its not recommended for anything below about 60 Hz in a sealed enclosure, but from 80 and up you won't have any issues.
Answered by: MattP
Date published: 2015-02-11
  • 2015-11-27T06:44CST
  • bvseo_cps, prod_bvqa, vn_cps_3.1.6
  • cp_1, bvpage1
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  • loc_en_US, sid_295-110, PRD, sort_recentQuestionsFirst
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