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Dayton Audio RS225-8 8" Reference Woofer

Brand:| Model: RS225-8
Overview
Dayton Audio Reference Series RS225-8 8" woofers deliver exceptional clarity, detail, and dynamics—and of course, incredibly low distortion.
Highlights
  • One of the lowest distortion, highest resolution driver series available
  • Low-distortion high-excursion motor system with two short-circuit paths
  • Compliant suspension and rigid black anodized aluminum cone for strong bass performance
  • Heavy-duty 6-hole cast frame, low-loss rubber surround, and solid aluminum phase plug
  • Designed and engineered in the USA
Part # 
295-356
Weight: 6.1 lbs.  
IN STOCK
List Price$74.99
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Part # 295-356
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Product Details

Dayton Audio RS225-8 8" Reference Woofer

The Dayton Audio Reference Series was conceived with one goal in mind—low distortion. Each speaker was carefully designed and optimized to offer the highest performance with the lowest distortion levels. At the same time, by focusing on features that contribute to sound quality and eliminating unnecessary frills, the drivers offer value unparalleled in the industry. Dayton Audio Reference Series RS225-8 8" woofers deliver exceptional clarity, detail, and dynamics—and of course, incredibly low distortion.



Product Specifications
  • Nominal Diameter8"
  • Power Handling (RMS)80 Watts
  • Power Handling (max)160 Watts
  • Impedance8 ohms
  • Frequency Response28 to 2,200 Hz
  • Sensitivity86.2 dB 1W/1m
  • Voice Coil Diameter1.5"
Thiele-Small Parameters
  • Resonant Frequency (Fs)27.6 Hz
  • DC Resistance (Re)6.34 ohms
  • Voice Coil Inductance (Le)0.83 mH
  • Mechanical Q (Qms)1.44
  • Electromagnetic Q (Qes)0.48
  • Total Q (Qts)0.36
  • Compliance Equivalent Volume (Vas)2.18 ft.³
  • Mechanical Compliance of Suspension (Cms)0.99 mm/N
  • BL Product (BL)8.8 Tm
  • Diaphragm Mass Inc. Airload (Mms)33.8g
  • Maximum Linear Excursion (Xmax)7 mm
  • Surface Area of Cone (Sd)211.2 cm²
Materials of Construction
  • Cone MaterialAluminum
  • Surround MaterialRubber
  • Voice Coil Wire MaterialCopper
  • Voice Coil FormerAluminum
  • Basket / Frame MaterialCast Aluminum
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter8.78"
  • Baffle Cutout Diameter7.24"
  • Depth3.5"
  • Bolt Circle Diameter8.23"
  • # Mounting Holes6
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.44 ft.³
  • Sealed F366 Hz
  • Vented Volume1.17 ft.³
  • Vented F338 Hz
  • * Enclosure volume/F3s based on BassBox "optimum" calculations-
Optimum Cabinet Size *
  • Sealed Volume0.44 ft.³
  • Sealed F366 Hz
  • Vented Volume1.17 ft.³
  • Vented F338 Hz
  • * Enclosure volume/F3s based on BassBox "optimum" calculations-
Dayton Audio RS225-8 8" Reference Woofer
  • BrandDayton Audio
  • ModelRS225-8
  • Part Number295-356
  • UPC844632088766
  • Product CategoryWoofers
  • Unit of MeasureEA
  • Product Rating
    (12 Reviews)
  • Weight6.1 lbs.
  • Case Qty4
  • 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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Reviews

Dayton Audio RS225-8 8" Reference Woofer
Dayton Audio RS225-8 8" Reference Woofer is rated 4.9167 out of 5 by 12.
Rated 5 out of 5 by from Hard to believe.This woofer is used in my Finalist speaker build. I'm not a professional but the first thing I noticed when I played the speakers was the bass I had never heard such tight bass coming out of a ported enclosure. Real nice sound! The enclosure is around 38 liters with a 2 1/2" (part #260-386) port 7.75" long with an F3 around 32hz.
Date published: 2014-03-21
Rated 5 out of 5 by from Pleasantly surprised...I bought this to replace a blown speaker in an old set of klipsch passive radiators. It sounds so much better than the other speaker that I intend to buy another to replace the other. Cant beat the performance for the price...
Date published: 2013-10-18
Rated 5 out of 5 by from Great choice!I recently discovered my woofers in my Infinity studio monitors had their foam rings deteriorating as well as the dust caps. One of the Infinity tweeters was working intermittently, so I bought two new Dayton Audio RS225-8 8" woofers and two Dayton Audio RS28F-4 1-1/8 silk dome tweeters. Wow! These speakers sound better than the original speakers ever did when they were new. I'm so glad I discovered Parts Express and Dayton Audio speakers ... I can't wait to build a set if speakers of my own design, with 10", 4" and silk dome tweeters. Just need to decide on which crossovers to use! Thanks again, Parts Express!
Date published: 2013-10-18
Rated 5 out of 5 by from Replacements for Digital Dynamic 3 way floorstandersI bought 4 Dayton Audio RS225-8 8" Reference Woofers to replace 4 blown woofers in my parents 15 year old 3 way floorstanding speakers.The woofers are well constructed and were easy to install.They have excellent tight bass with great extension, better than the original woofers. I would recommend them for the price.
Date published: 2013-05-09
Rated 5 out of 5 by from Fantastic two-wayOriginally purchased these as a replacement for a set of two-way bookshelf speakers with rotted surrounds. Once I found the surround repair kit from Parts Express, I decided to build a new set of two-ways with these drivers. The results are fantastic! Using an appropriately sized vented box design, the bass response is amazing for a set of 8 inch drivers - definitely better than some 12" and 15". A two way system is possible with these drivers as long as you are careful about your tweeter selection and use a higher order crossover ( I designed a 12 dB/octave). I highly recomend these drivers.
Date published: 2013-10-18
Rated 5 out of 5 by from Dayton Audio RS225-8 8" Reference WooferUsed these to replace the drivers in my Bose 601 series one speakers. Wow what a difference! Great bass response.
Date published: 2014-01-20

Product Q&A

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If your question requires design or troubleshooting information,
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Dayton Audio RS225-8 8" Reference Woofer

Building a subwoofer with this speaker?

I want to build a subwoofer for my covered outdoor patio. I want to build an enclosure for Dayton RS225-8 (or what is a better choice) and basically have this speaker down firing. I am looking to power this built subwoofer with two channels running bridge of my Crown cts8200. Do you think that will work decently?
Asked by: drharper
I SEE PROBLEMS AMP DOES NOT BRIDGE MONO BELOW 100 HZ NOT FOR SUBWOOFER USE!! AND THE 8 YOU HAVE CHOSEN IS NOT A SUB TYPE WOOFER IT HAS FREQUENCY RESPONCE TO 2 K YOU SHOULD USE SUB WOOFER CLASS FOR MAX LOW END BASS AND 4 OHM FOR MAX POWER EFFICIENTLY FROM A SUB TYPE AMP ... AND WHILE I SHATTER YOUR IDEA COMPLETELY !OUTDOOR SOUND PRODUCTION OF BASS IS IN FREE SPACE, NO ROOM REFLECTION WARMTH OR CABINET LOADING IN CAR SUB'S THE OPEN SPACE WILL REQUIRE A 12 , 10, OR LARGER TO PRODUCE THE BASS OF AN 8 IN THE HOUSE... A VENTED CABINET FOR MORE EFFICIENCY AND PUNCH TO THE OUTDOOR PROBLEM CAN HELP!
Answered by: digitalhaven 53
Date published: 2013-10-29

work with Infinity Reference Two speaker as a replacement of woofer?

The surround of the speaker (driver?) is disintegrating. So I am considering replacing it.Here is some spec of the speaker:Frequency Response: 50Hz - 25kHzCrossover Frequency(ies): 300HzSensitivity: 90dB (1 watt/1 meter)Nominal Impedance: 6 ohmsPower Rating: 15 - 100 wattsWoofer: 8" (20.3cm) IMGTweeter: 1" (2.5cm) PolycellAs far as I can tell, there is no vent hole in the box, so is this "sealed"?Alternatively, should I get a "surround" repair kit and fix what I have?
Asked by: yuichi
To replace your driver with the RS225-8 would just be a wild guess. You need to remove the good driver and physically measure your cabinet to see what will fit into your existing cutout than test your driver to get it's true specs if you want a close match. If you're really attached to these drivers and how they sound you could replace the surround, seen them lately for about $25, need accurate dimensions so you get the right kit. P.E. can usually help you with that also. Sense you're considering replacing I'll assume you're not that attached. You must replace both if you go with the RS225-8. You'll want to keep your system balanced and my experience with them is they're such a huge upgrade you'd be kicking yourself for only doing one. My actual measurements, calculations and experience show they work equally well in sealed or vented boxes. Just adjust your Impedance and sensitivity and you'll be good.
Answered by: Wid the Wizard
Date published: 2012-12-02

Vented towers using this driver?

Hi, I would like to run three of these drivers in parallel in a 150L vented enclosure tuned to 30hz. They will be low passed 2nd order at 300Hz. Firstly what would be an ideal/good port setup for this? And second I know these drivers are more aimed towards sealed enclosures, will i experience any problems from running them in a vented enclosure? i would really prefer vented because then i should be able to get performance which does not require a sub.
Asked by: TimmyHawkey
These speakers should sound good in a ported or sealed enclosure. Depending on the kind of sound you are looking for, you will need about 5 ft^3 of enclosure volume for each cabinet. I am not 100% sure but I ran some numbers and you could use a 3.5" diameter port with around 8" length. This is really going to depend heavily on the building method you use, because you will need deep enclosures to accommodate the ports. This should result in a Resonant frequency of around 30 hz, a 3db down point of around 32 hz and a Qtc rating of .707. If you give me some particulars of the project I could give a better solution.
Answered by: n2jazznrock
Date published: 2012-02-08

Vented Enclosure

I may have gave the wrong internal cabinet dimensions in my previous question.How would 2 of these work in a 2.20cuft cabinet? 10.5x10.5x34.5What size tubes would I need?Thanks
Asked by: Frezz
Use a 3" port, 7.4" long to tune the enclosure to 30 hz.The part #268-350 3" flared port would be a great choice for this.
Answered by: KVESKY
Date published: 2012-08-28

Sealed enclosure

Has anyone used these in a sealed enclosure? What was your preferred enclosure size?Was the transient response improved compared to a ported enclosure?Would like to use one of these for a two way rebuild I am doing, and I HATE the sound of ported enclosures. I can not stand even a hint of boominess.Thanks for your help.
Asked by: Sea Otter
A lot of these drivers have been used in a variety of ways. Some drivers work in both sealed or vented enclosures - others have specs that lend them to one cabinet style only. If you are looking for audiophile quality bass. You want a sealed enclosure (no disrespect to those rare ported gems out there). But sealed is the easiest to make work. Using the specs of the driver and an online speaker box calculator, set for a total Qts of .707 for flat bass. It will tell you the F3 or -3db down point. If you are using a separate subwoofer you can even opt for the more critical .5 Qts as the you may not be using the lowest register of the driver. Now boominess comes from a lot of things - type of cone material. Construction of the motor, quality of the cabinet etc. I have used Morel MW 164s in many projects. They are an extraordinary driver and go deep while having the ability to match planar magnetic ribbon midranges. If you want accurate bass - do your homework and open your check book. There are no short cuts
Answered by: MarkAJH
Date published: 2012-11-13

How high can this woofer be crossed over without issues?

Can this woofer be used as a mid-woofer and safely crossed at 2000 Hz in a two way with the RS28F-4 without problems?
Asked by: cavemanmusic
That should be fine as long as the slope is steep enough to get rid of the cone breakup around 6-8kHz. usually a 3rd order will work for this.
Answered by: MattP
Date published: 2012-11-22

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