Dayton Audio DCS305-4 12" Classic Subwoofer 4 Ohm

Brand:| Model: DCS305-4
The Dayton Audio Classic Series subwoofers offer solid value at lower price points. No compromises were made in the design, materials, or construction of these rugged 4-ohm powerhouses.
  • Sturdy stamped steel frame
  • Vented pole piece and bumped back plate
  • Inductance-reducing copper pole piece cap
  • Treated non-pressed paper/Kevlar cone with rubber surround
  • 4-layer VC with polyimide former
  • Great for home and automotive applications
  • Five year warranty
Part # 
Weight: 13.3 lbs.  
List Price$110.99
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Your Price
Buy 4-up$80.85
Part # 295-204
Qty:  EA
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Product Details

Dayton Audio DCS305-4 12" Classic Subwoofer 4 Ohm

The Dayton Audio Classic Series subwoofers offer solid value at lower price points. No compromises were made in the design, materials, or construction of these rugged 4-ohm powerhouses. The drivers feature a vented pole piece with copper cap, bumped back plate for improved excursion capability, Kevlar reinforced cone with rubber half-roll surround, and a high-temperature 4-layer copper voice coil wound on a polyimide former.


Product Specifications
  • Nominal Diameter12"
  • Power Handling (RMS)250 Watts
  • Power Handling (max)500 Watts
  • Impedance4 ohms
  • Frequency Response23 to 200 Hz
  • Sensitivity89.4 dB 1W/1m
  • Voice Coil Diameter2.57"
Thiele-Small Parameters
  • Resonant Frequency (Fs)23 Hz
  • DC Resistance (Re)3.2 ohms
  • Voice Coil Inductance (Le)1.94 mH
  • Mechanical Q (Qms)5.59
  • Electromagnetic Q (Qes)0.44
  • Total Q (Qts)0.41
  • Compliance Equivalent Volume (Vas)4.12 ft.³
  • Mechanical Compliance of Suspension (Cms)0.33 mm/N
  • BL Product (BL)12.31 Tm
  • Diaphragm Mass Inc. Airload (Mms)145g
  • Maximum Linear Excursion (Xmax)9.3 mm
  • Surface Area of Cone (Sd)498.8 cm²
Materials of Construction
  • Cone MaterialPaper / Kevlar
  • Surround MaterialRubber
  • Voice Coil Wire MaterialCopper
  • Voice Coil FormerKapton® / Polyimide
  • Basket / Frame MaterialSteel
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter12.05"
  • Baffle Cutout Diameter10.83"
  • Depth6.02"
  • Bolt Circle Diameter11.59"
  • # Mounting Holes8
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume1.14 ft.³
  • Sealed F348 Hz
  • Vented Volume3.42 ft.³
  • Vented F326 Hz
Dayton Audio DCS305-4 12" Classic Subwoofer 4 Ohm
  • BrandDayton Audio
  • ModelDCS305-4
  • Part Number295-204
  • UPC844632080678
  • Product CategorySubwoofer Drivers
  • Unit of MeasureEA
  • Product Rating
    (17 Reviews)
  • Weight13.3 lbs.
  • Case Qty2
  • 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 DCS305-4 12" Classic Subwoofer 4 Ohm
Dayton Audio DCS305-4 12" Classic Subwoofer 4 Ohm is rated 4.7647 out of 5 by 17.
Rated 5 out of 5 by from Great replacement wooferI picked up a pair of these to replace the 12 inchers in my 26 year old Klipsch Forte IIs (one of them blew after all that time). After researching for over a week I found myself back at parts express buying these. I couldn't be happier. They differed a little from stock in wattage and a few other specs, but they work well with the passive radiator. I may be hearing things but these sound tighter and slightly more dynamic than the originals.
Date published: 2015-03-12
Rated 5 out of 5 by from Great sound!The woofer in my 15 year old Kenwood powered subwoofer finally self destructed. Rather than spend the bucks on an entire new subwoofer, I decided to just replace the speaker. I ordered this speaker as a replacement and it's by far better than the original with a much bigger magnet and a crisper sound.The old Kenwood sounds better now than it did when new.Also, thanks to Parts Direct for their excellent service.
Date published: 2015-02-16
Rated 5 out of 5 by from Dayton Subwoofer...Great replacementI have an old KLH 200 watt subwoofer that I used in my tv audio chain. The original 12" speaker was cutting out and showing signs of deterioration. The Dayton appeared to be an upgrade and a well made replacement. Other than having to slightly enlarge the cabinet fitting, replacement was fairly straight forward. The result is a much tighter and cleaner sounding sub that blends perfectly w/ the system. And the price was great!
Date published: 2014-11-13
Rated 5 out of 5 by from Great speaker, just maybe not in 3-way towerI bought a pair of these as woofer replacements for my DCM KX-12 towers. I needed 4 ohm woofers, and these seemed to have the power handling I needed. I was wondering about the frequency response as a woofer, and unfortunately they didn't have enough range. However, as a subwoofer speaker, these Daytons are very well constructed, nice looking, beefy. I'd not hesitate to put them in an actual subwoofer box, or as a replacement if I needed strictly a sub. The excellent rating is for that part. These are worth the price, and in the towers, the bottom end was tremendous.
Date published: 2014-10-16
Rated 5 out of 5 by from Monolith III Woofer ReplacementAfter installing these woofers a year ago I thought I write this review. I replaced the factory woofers on my Monolith III speakers which were beginning to distort due to the dust cover coming unglued from the cone.I already have a subwoofer set up for movies. For purely musical applications, pop, jazz, classical they are highly recommended. Articulate, powerful, musical, they were able to better bridge the gap between the electrostatic element and woofer frequencies. If you looking for a great woofer replacement, these speakers are what the doctor ordered.
Date published: 2014-09-08
Rated 5 out of 5 by from Fantastic sound in AR S12HO enclosureMy Acoustic Research S12HO began annoying 60Hz hum, then started to smoke ... I just unplugged it and used as a coffee table. Then I ran across Parts-Express and purchased the #300-803 Dayton Audio SPA250 250W Plate amp. Once it was all put together, the speaker was toast so I ordered this #295-204 12" subwoofer speaker. Fits perfectly. Freekin' awesome sound, thunderous bass in my large living room!Don't throw away your old S12HO! If you have this AR enclosure I highly recommend the pair. It sounds better than the original amp/speaker. I can post details of this project -- just email me.
Date published: 2014-06-09
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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 DCS305-4 12" Classic Subwoofer 4 Ohm

I am trying to find a replacement for an Audax HT300Z2 which is in a ported enclosure with an internal volume of 2.37 ft3. The port has a diameter of 4" and a length of 7". I am not sure whether this Dayton would do the job. Thanks for the help

Asked by: kyrian
This requires a bit more information in order to proceed. Please contact our tech support for more help with this question, tech@parts-express.com or 800-338-0531 x1.
Answered by: MattP
Date published: 2015-02-02

I have two speaker cabinets with a internal volume each of 3.67 cubic feet. Port internal measurement is 4.25 " in diameter by 10.5" in length. I can adjust port size if necessary. How close am I to making two DCS305-4 speakers work in these cabinets?

Asked by: Jim Young
The volume you have is perfect. The vent isn't bad, right now they are tuned to about 27 Hz. You could theoretically extend the ports to about 15" for a slightly smoother roll off and a tuning frequency of 24 Hz, but this is something you can play with to get dialed in to where you want it.
Answered by: MattP
Date published: 2015-01-15

I'm interested in pairing this with the dayton 250w plate amp.  Can you tell me what the optimal size would be for a sealed box in order to get a Qtc of .707 and the Fs down to 35hz where the bass boost of the amp kicks in?

Asked by: Aruss
The recommended sealed box for a Qtc of .707 is 1.14 cubic feet.
Answered by: MattP
Date published: 2015-01-14

If placed in a down firing sealed box and paired with a marantz ma-500 amp. Do I need a low pass filter? If so do I need a high pass for my mains, which both have an 8" mid woofer( response goes down to 37hz but I was thinking of cutting that around 50)?

Asked by:
A low pass filter is recommended for any subwoofer application, although the frequency will be ultimately determined by you, depending on what will blend the best with the rest of the system. Subwoofers are usually crossed around 80-100 Hz.
Answered by: MattP
Date published: 2014-07-28

I have a Paradigm PDR12 with a blown driver. Box is about 2 cubic feet with two 3" dia. ports 9 1/2" long. Amp is 150 watts, don't know ohms. This speaker is the right size to fit. How do you think it will do?

Asked by: Rusticman
The enclosure you have is currently tuned to a pretty high 39 Hz which will cause a bit of a peak for this driver. If you seal up one of the ports it will perform much better. I would verify the original driver impedance, but if it is 4 ohm this Dayton will work very well.
Answered by: MattP
Date published: 2014-07-18

Have a vintage Cambridge Soundworks SW1 powered sub with all original parts. The 12" woofer makes a rattle at low end frequencies, actually comes from the cone itself.  Want to replace woofer and looking for best option. Box is sealed, 2 cu ft., 4ohms

Asked by: Breaze
This Dayton Classic will work very well as a replacement in that model.
Answered by: MattP
Date published: 2014-07-07
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