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
Qty:  EA
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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
  • Sensitivity86.9 dB 1W/1m
  • Voice Coil Diameter2.5"
Thiele-Small Parameters
  • Resonant Frequency (Fs)17.1 Hz
  • DC Resistance (Re)3.9 ohms
  • Voice Coil Inductance (Le)3.7 mH
  • Mechanical Q (Qms)6.14
  • Electromagnetic Q (Qes)0.39
  • Total Q (Qts)0.37
  • Compliance Equivalent Volume (Vas)9.21 ft.³
  • Mechanical Compliance of Suspension (Cms)0.28 mm/N
  • BL Product (BL)18.53 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
    (3 Reviews)
  • Weight26.0000 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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Dayton Audio TS400D-4 15" Titanic Mk 4 Subwoofer 4 Ohm
Dayton Audio TS400D-4 15" Titanic Mk 4 Subwoofer 4 Ohm is rated 4.3333 out of 5 by 3.
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

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 TS400D-4 15" Titanic Mk 4 Subwoofer 4 Ohm

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: 2014-07-03

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: 2014-07-03

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: MrJblControl1
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

With two Dayton Audio TS400D-4 15 and a box size of 27 cubuc feet I want to tune the vented system down to 15 Hz. This is for a church organ that has to be able to reproduce pipes in the range of 16-32 Hz. Size of opening abd tube?

Asked by: hptschupp
I would recommend two of our 6" Precision Port kits at their full 18" length for a tuning frequency of 15.8 Hz.
Answered by: MattP
Date published: 2014-05-09

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