Dayton Audio TS400D-4 15" Titanic Mk 4 Subwoofer 4 Ohm

Brand:| Model: TS400D-4
When you want the very best subwoofer for home theater, choose the Dayton Audio Titanic Mk 4 15" subwoofer. Dayton Audio takes everything that made the Mk III Titanic subwoofers the best performing home theater subwoofers, and increases physical Xmax with a stronger motor for a faster response.
  • American-made, muscular subwoofer performance
  • Two more millimeters of Xmax than the Titanic Mk III
  • A stronger motor provides great performance in smaller enclosures
  • Shares the same dimensions as the Titanic Mk III for a true drop-in upgrade
Part # 
Weight: 26.0000 lbs.  
List Price$310.99
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Buy 4-up$227.50
Part # 295-405
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Product Details

Dayton Audio TS400D-4 15" Titanic Mk 4 Subwoofer 4 Ohm

Dayton Audio's Titanic series subwoofers are world-renowned for their ability to create deep, hard-hitting bass with minimum distortion. This line of subwoofers has always been known for prodigious amounts of Xmax, relatively high sensitivity specifications, and an amazing ability to handle power.

Dayton Audio takes everything that has made the Titanic subwoofers stand out as top-of-the-line subwoofers in the loudspeaker industry and improves upon them in the Mk 4 generation. The TS400D-4 15" Titanic Mk 4 subwoofer has been redesigned from the ground up to improve upon every aspect possible, while maintaining the essence of the Dayton Audio Titanic series.

It All Starts with the Motor

The re-tooled motor focuses even more magnetic flux in the gap, for a lower Qes and Qts. This allows for the same performance as a Titanic Mk III 15", in a much smaller box. Where the Mk III needed at least 2.44 cubic feet of net internal airspace for a Qtc alignment of 0.707 and an f3 of 43 Hz, the Mk 4 needs 1.67 cubic feet of internal airspace for the same Qtc alignment and f3 (when used with two pounds of Acousta-Stuf fill).

The Titanic Mk 4 has two additional millimeters of physical Xmax (where the Mk III Titanic's listed Xmax is based upon DUMAX measurements, the Mk III's physical Xmax is 16 mm). A Titanic Mk 4 will also play lower than a Titanic Mk III due to a 22% lower free air resonance. This translates into more output, down low, where you want it in home theater.

This American-made subwoofer has the muscle you need to pressurize your home or mobile audio system with deep, clear, clean bass. Check the structural integrity of your house, or car, before applying power!

And Everything that Made the Titanic Subwoofers Famous

Dayton Audio's TS400D-4 Titanic Mark 4 subwoofer is built with a sturdy aluminum die-cast frame to keep everything perfectly aligned while handling the insane amounts of air pressure it's capable of generating inside of a sealed enclosure. An extended pole piece keeps more of the voice coil in the gap for more motor control.

Frame openings under the spider help to reduce power compression (and trapped air) and the vented pole piece keeps the edgewound voice coil cool, for high power handling. The Kevlar-reinforced paper cone resists deformation under excursion, and the large rubber surround keeps cone travel linear. For a tight seal on the baffle, an integrated rubber gasket is pre-mounted to the frame.

Product Specifications
  • Nominal Diameter15"
  • Power Handling (RMS)900 Watts
  • Power Handling (max)1600 Watts
  • Impedance4 ohms
  • Frequency Response17 to 300 Hz
  • Sensitivity90.5 dB 2.83V/1m
  • Voice Coil Diameter2.5"
Thiele-Small Parameters
  • Resonant Frequency (Fs)16.8 Hz
  • DC Resistance (Re)3.5 ohms
  • Voice Coil Inductance (Le)3.6 mH
  • Mechanical Q (Qms)5.96
  • Electromagnetic Q (Qes)0.33
  • Total Q (Qts)0.32
  • Compliance Equivalent Volume (Vas)7.80 ft.³
  • Mechanical Compliance of Suspension (Cms)0.22 mm/N
  • BL Product (BL)21.3 Tm
  • Diaphragm Mass Inc. Airload (Mms)323.5g
  • Maximum Linear Excursion (Xmax)19 mm
  • Surface Area of Cone (Sd)822.2 cm²
Materials of Construction
  • Cone MaterialPaper / Kevlar
  • Surround MaterialSantoprene®
  • Voice Coil Wire MaterialCopper
  • Basket / Frame MaterialCast Aluminum
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter15.5"
  • Baffle Cutout Diameter14"
  • Depth7.8"
  • Bolt Circle Diameter14.7"
  • # Mounting Holes8
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume2.33 ft.³
  • Sealed F337 Hz
  • Vented Volume5.46 ft.³
  • Vented F321 Hz
Dayton Audio TS400D-4 15" Titanic Mk 4 Subwoofer 4 Ohm
  • BrandDayton Audio
  • ModelTS400D-4
  • Part Number295-405
  • UPC848791000911
  • Product CategorySubwoofer Drivers
  • Unit of MeasureEA
  • Product Rating
    (6 Reviews)
  • Weight26.0000 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 TS400D-4 15" Titanic Mk 4 Subwoofer 4 Ohm
Dayton Audio TS400D-4 15" Titanic Mk 4 Subwoofer 4 Ohm is rated 4.1667 out of 5 by 6.
Rated 5 out of 5 by from Upgraded from MK3Since no measurements are posted, I will spell out the reason why this is a major improvement. I built the Dayton Titanic 3 15" sub kit right after it became available. I've used it for music and HT. I noticed that it got unsteady if crossed over above 60hz. It also didn't seem to do that great with the HT setup tones, although, the sub did outperform the FAR more expensive REL strata subs that audiophiles drooled over. In all, a killer sub for the money.I just installed the Mk4 driver. In no uncertain terms, it is far more potent and far superior in every way to the mk3, The very same denon audessy setup was taken in stride. Crossing over above 60hz is no issue. It's incredibly solid and potent now. It integrates MUCH better to mains or satellite speakers. It will, without any exaggeration...out perform (audibly and measurably) most boutique audiophile subs costing up to $3,000 at least, I would be VERY upset if I spent 3 grand on a sub just to have this under a grand kit blow it away.The MK4 driver is no joke for music or HT. It is an obvious major improvement over the MK3. HIGHLY recommended!
Date published: 2015-04-25
Rated 2 out of 5 by from MK4 = OK, but far from great...This is my 3rd Titanic 15" since 2006. 1st two were the MK3, just received the Mk4 recently. The 1st one purchased back in 2006 w/ the Titanic MK3 Subwoofer Kit rocked the house. Absolutely floored each time w/ clean output even with high abuse; abuse to the point it separated the dry-wall from the studs in the corner it sat. This beloved 1st gen Mk3 lasted nearly 6 years where the surround finally cracked after several repairs & spider become unglued from the VC.Because I was so incredibly impressed w/ the original purchase, I purchased a replacement Mk3 back in 2012. This MK3 replacement had a different cone assembly that felt weaker, larger dust cap with noticeably higher distortion / resonances emanating thru it, in addition to clanging / banging of the VC against the pole-piece if the cone moved 0.0000001mm beyond rated Xmax. I got so annoyed one night watching a movie that I kicked in the dust cap in frustration, thus voiding my ability to return it. After replacing the dust cap with a smaller Digital Designs 5" carbon fiber dust cap, it sounded a tad better distortion wise within spec'd Xmax limits, but still clanged & banged if pushed. This 2nd gen Mk3 was unimpressive to be nice about it, but I kept it due to inflicted damage & suffered through 2 years until I had enough of it last week.Just received the 15" MK4... It's better than the defective 2nd gen MK3 I suffered through, but all around unimpressive. It clangs & bangs a bit if there is a large bass transient, distortion is very noticeable when pushed above Xmax during a LFE sine waves in a movie track or a clean transient pulse. Compliance of the suspension is reduced a lot over the Mk3 (Vas & Qms is a sure indicator of this as well); the surround is thinner & seems cost-reduced (don't think it'd hold up well to a high power vented enclosure well). Top plate of the magnet assembly is thinner (thus the increase in spec'd magnetic Xmax & the increase in advertised "magnetic energy")... Overall, it works as a subwoofer, but leaves me feeling incredibly flat with its overall performance. This Mk4 appears to be a cost reduced "Acoustic Suspension" version of the MK3 (hence the lower box volume requirements & the ts parameters that support it's use in this application). Definitely NOT an upgrade to the MK3 if you were fortune enough to have one of the earlier production ones that rocked.I could build a new box to increase efficiency & acoustic coupling to my room, but I shouldn't have to as my original MK3 purchased back in 2006 slammed hard & took abuse for years without ever clanging the VC against the pole-piece or other annoying signs of distress even when the surround started to crack. I'll be sure to not get frustrated w/ this MK4 & kick in the cone before I remove it from my system for return when the 18" Ultimax sub kit gets back in stock. It's too bad as I'd gladly pay $300 - $350 for Dayton Audio to produce the original Titanic Mk3 sub I loved. Seems cost reduction w/ over inflated marketing to compensate is the norm these days in consumer products; it's disappointing that I now need to 'read between the lines' in Dayton Audio's marketing speak these days.
Date published: 2014-12-17
Rated 5 out of 5 by from Good all around subGood sub, decent BL makes for quick bass. Like the first review my original set had the same issue but due to Parts Express excellent customer support I am extremely happy with their products. Suprising SPL for the small 3.0 cu ft cabinet that can be used. Be careful, despite the 2.3 cu ft requirement, 3.0 is needed due to bracing and other internal space users (including the driver it self) to yield a NET 2.3 cu ft. FYI, the acousta stuff works better if you glue some foam to the walls first, this also deadens the cabinet some. I personally used with 1.5 lbs of stuffing and glued foam. Hope this helps,Rick
Date published: 2014-10-08
Rated 3 out of 5 by from 5 stars subwoofer, no stars assembly qualityI bought a pair to replace two burned RSS390HF in my car. I use the whole trunk, 11 ft.3 as the subwoofer enclosure, and bass extension with two Titanics is just excellent, it is flat down to 25Hz and around -3dB at 20Hz. I would definitely put 5 stars rating for the performance. But the building quality is seriously lagging behind and is not on the level I expect from Dayton Audio, especially considering it's their most expensive 15" subwoofer. First of all, the cone on both speakers is not aligned properly and glued slightly to a side, with a 4 mm gap on one side (please see attached pictures) which makes the rubber surround look deformed. Secondly, the spider on one of the speakers was not glued properly, with a heavy blobs of glue in some places and no glue at all otherwise. The other speaker is OK (see attached pictures for comparison). But the biggest disappointment happened when I installed both speakers and noticed the terminals polarity is marked differently on them. Quick test confirmed the cones are moving in different directions if connected plus-to-plus to a battery. Common, Dayton Audio, you can do better than that... I would stop advertising this speaker as american-made until all assembly issues are resolved and the adequate quality control is in place. When I pay $225 per speaker I shouldn't be glueing spiders to coils myslef.Adding pictures on PE website doesn't work for me today, will upload tomorrow
Date published: 2014-05-16
Rated 5 out of 5 by from Looks fantastic.Purchased this item a few weeks ago, I have yet to assemble it and probably won't for at least a month. (remodeling living room entirely first)Though it shipped quickly, was packaged well. And looks very well manufactured. I'll update the review later after assembly.
Date published: 2014-03-25
Rated 5 out of 5 by from Great Sub-Woofer DriverI bought this to replace an old Klipsch driver that had worn out. I called Parts Express Tech Assistance line and told the gentleman the specs that I knew and asked him to select which driver would work the best. After making several calculations, he recommended the Dayton Audio TS400D-4 15" Titanic Mk 4...so I bought it.It is very tight, realistic in reproduction, and does not distort. No chance of me over-driving this one!!!I am very pleased with the product and the service!Thanks Parts Express for the help!
Date published: 2014-03-07
  • 2015-07-29T06:55CST
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Dayton Audio TS400D-4 15" Titanic Mk 4 Subwoofer 4 Ohm

I currently have a Titanic MK III and will be putting it in the 3 cubic foot knock down cabinet - sealed. Any problem using an additional Ultimax 15 in the same setup, running mismatched subs with separate boxes? 1200 watts @ 4 ohms to each sub w/ EQ?

Asked by: Furhooks
There is nothing wrong with doing this at all. The subs will have to be EQ'd separately but depending on placement, they would have to be anyway.
Answered by: MattP
Date published: 2014-09-15

I'm considering the purchase of 2 15" Daytons and would like to hear which you would recommend considering space is an issue and being powered by Crown X4000. I would prefer a sealed enclosure for a mix of music and HT, music taking priority (size box?).

Asked by: BuckRogers
With space being limited, these will work very well each in 2 to 3 cubic feet sealed. The UM15 is another good choice but likes a slightly larger box around 4 cubic feet.
Answered by: MattP
Date published: 2014-08-11

I have a dbx subwoofer 15in. I was thinking about replacing the speaker with TS400D-4 15". I use it with an Adcom amp. I wanted to drop it replace the speaker and not change the crossover or jack plate. thanks

Asked by: sullysnet
Unfortunately we do not have a cross reference available for this type of thing. 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: 2014-07-29

MattP, you never answered Mikee's question about which is better. Is the 15" Ultimax better than the Mk4? I would like to know why one would be better then the other or why one would work better in one situation or scenario over the other. T'anks!

Asked by: Beamie
There is no definitive answer to which is "best", this is entirely too subjective. I supply the enclosure and modeled response numbers and you use the woofer that works best for your application.
Answered by: MattP
Date published: 2015-05-13

I have the 1000 watt dayton plate amp. I want to build a 5.5cuft vented enclosure to 20hz. Whats the suggested port size?

Asked by: grassguy
I would recommend two 4" diameter, dual flared ports that are 17" long overall which will provide an F3 of 20 Hz.
Answered by: MattP
Date published: 2014-09-09

Which 3 cuft knock down enclosure would work best for the Dayton Audio TS400D-4 15" Titanic Mk 4 Subwoofer? I use to use two 18" subs in my 7.1 with a QSC PLX 3402 amp. Would like smaller enclosures with great results.

Asked by: vsparlin
Any of our 3.0 cubic foot enclosures will work, although they will all require the holes to be cutout larger for the Titanic to fit properly.
Answered by: MattP
Date published: 2014-05-14
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