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Dayton Audio ST255-8 10" Series II Woofer

Brand:| Model: ST255-8
Overview
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.
Highlights
  • Large voicecoil provides high efficiency power and low distortion
  • Made in USA
  • Natural sounding paper cone
Part # 
295-110
Weight: 12.81 lbs.  
IN STOCK
List Price$115.99
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Part # 295-110
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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
  • Sensitivity91.7 dB 1W/1m
  • Voice Coil Diameter2.5"
  • Magnet Weight56 oz.
Thiele-Small Parameters
  • Resonant Frequency (Fs)41.1 Hz
  • DC Resistance (Re)6.3 ohms
  • Voice Coil Inductance (Le)1.23 mH
  • Mechanical Q (Qms)9.94
  • Electromagnetic Q (Qes)0.32
  • Total Q (Qts)0.31
  • Compliance Equivalent Volume (Vas)1.72 ft.³
  • Mechanical Compliance of Suspension (Cms)0.3 mm/N
  • BL Product (BL)16.03 Tm
  • Diaphragm Mass Inc. Airload (Mms)50.09g
  • 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
    (34 Reviews)
  • Weight12.81 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Reviews

Dayton Audio ST255-8 10" Series II Woofer
Dayton Audio ST255-8 10" Series II Woofer is rated 4.3235 out of 5 by 34.
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
Rated 5 out of 5 by from Superb sound -- better than original woofersThese went into an old Lafayette 3002 Criterion (made by ESS) speaker system -- a two-way with a Heil tweeter and a 2,000 hertz crossover. These are heavy, obviously well made woofers. The original woofers rotted out and were replaced about 14 years ago. Although the sound wasn't bad then, I suspected that it would be better with replacement woofers, and I was right. With the new Dayton woofers the sound is superb. The bass goes down strong to 35 hz. and is audible well below that. But the beautiful thing about the new system is the mid-range, which sounds just right, with great transient response. I judge speak systems largely by how well they reproduce piano sound, and with good source material, the piano sounds like a piano. In short, I am very happy with these woofers.
Date published: 2013-03-20
Rated 5 out of 5 by from Often overlooked subwooferI bought this speaker about 5 years ago to replace a blown Carver sub and it still sounds great. This is a very music friendly sub If you are a bass guitar fan then this sub will please. It doesn't thump so it's probably not the best for rap or hip hop unless you have some form of bass boost. It does replicate explosions quite well and has no problem shaking the walls with a 200 watt rms amp. It has a flat range that is very usable through 250hz which makes it ideal if you are planning on pairing it with little main speakers that don't have much output below 200hz.
Date published: 2013-02-19

Product Q&A

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Dayton Audio ST255-8 10" Series II Woofer

What size port is best for a vented 0.9-1.0 cu ft box with this woofer?

What size port is best for a vented 0.9-1.0 cu ft box with this woofer?Looking to use 4 of these in my car powered with 1000 RMS at 2 ohms.
Asked by: SpencerK
IT looks like a tuning frequency of around 50 hz will provide the flattest response in that airspace. To tune to that, use a 3-1/2 inch diameter port tube that is 8 inches long.
Answered by: Chrisf
Date published: 2013-06-13

I have Sony SS U501 home theater speaker colums, 3 of which are shredded, i need replacement speakers, would these be the ticket ? would replace all 4

speaker cutout opening is 10.5 inches
Asked by: jhunter2140
Looks like you cut-out is too big.
Answered by: mojo
Date published: 2013-11-20

I NEED TO RE CHOOSE THE WOOFERS PERHAPS

WHAT WOULD BE THE BEST WOOFERS, KEEPING COST IN MIND FOR MY ENCLOSURES FOR MAXIMUM PUNCH? 12W X 48H X 18 DEEP. OUTSIDE DIMENTIONS OF 3/4 MFD. THANKS
Asked by: VITOB
Why are you stuck on this enclosure size?WHat type of setup are you using these in?The more information the better.These are great woofers if your looking for high output musical/realistic bass.These woofers remind be of the awesome bass Altec Valencia's have, but a notch up in the clean/transient department-but have the same "soul".If you just looking for "boom" look else where.They really work better in smaller enclosures. This is what really makes them quite unique-as it's hard to find a quality 10" woofer that works up to it's potential in a smallish enclosure, and not loose extension or output.
Answered by: mojo
Date published: 2013-12-22

what size port should i use in my cabinet 48''h x 12''w x 18'' deep #outside dimentions made from 3/4 mdf#.

I want to use two 10 inch woofers in each cabinet (not sure which crossover to use but I like the dayton silk dome 1 1/8 inch tweeters. what port size can i use I WANT SUPER AUTHORITUVE BASS. THANKS
Asked by: VITOB
This enclosure is about twice the size it needs to be for these woofers, but two 4" diameter ports that are 5" long will tune this to 37 Hz. I would recommend heavy fill in the enclosure.
Answered by: MattP
Date published: 2013-04-12

I have read that this is used in the Wicked One by Decaware. Does anyone know the internal volume of the sealed chambers in the Wicked One??

What is the f3 of the Wicked One using these drivers??Can this sealed volume be changed to a vented enclosure by installing a vent in the horn opening at the rear of the sealed enclosure??I would like to try them as a subwoofer cabinet (Wicked One) in a bass guitar rig.
Asked by: WTett
There are a number of forum thread strings that you can search for the details on the build of the Wicked One. The project is very complex and requires advanced math, design and construction techniques. Individual drivers, based on their T/S parameters, are often better suited to ported or sealed enclosures. Horn loaded are typically used for sound reinforcement for high SPL and controlled projection. On the other end of the spectrum, sealed with a total Qts of .707, or even more critical .505 yields the most accurate bass - not withstanding certain brilliant designers that manage to bend the laws of physics. For a beginning project - access your goals. A good cabinet with plate amp, ported or sealed will make for a good sub. Consider the volume of your room. Rigidity of the walls, wood or concrete floor - all these interactions effect the performance of the driver ultimately. Click the SPEAKER BUILDING tab up top, then the WOOFER SELECTION GUIDE to the right. You will find most drivers listed with suggested ported and sealed enclosures... From there, you can also use the T/S specs and plug them into a box calculator to see how you can vary the performance of the system... Hope this helps...
Answered by: MarkAJH
Date published: 2013-12-14

Port Length/size for Dual woofer setup in a 2.7 cu ft box

I am looking at using these as replacments in a vintage dual 10" woofer speaker with a internal volume of 2.7 cu ft.What would be the ideal port length and size for this set up? I would like to get by with one port (stock is 2.5"D x 2.5"L) but I'm thinking 2 would be ideal.Thank you in advance.
Asked by: mojo
There are several different ways you can do this. You can go with 1 5" port 4.68" long or 1 6" port 7.62" long.You can also go with 2 2.5"ports 2.34" long or 2 3" ports 3.81" long.In both cases the larger, longer ports will give you less noise or "huff". All 4 configurations will tune to ~48hz with an f3 of ~46hz. The drop off below tuning is pretty sharp so it might be a good idea to put some protection on them below 40hz or so. Should sound great
Answered by: Musgofasa
Date published: 2012-03-26

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