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Dayton Audio UM15-22 15" Ultimax DVC Subwoofer 2 ohms Per Coil

Brand:|Model: UM15-22
Dayton Audio's Ultimax Series DVC subwoofers are purpose-built to move air and create clean, articulate, fast bass. Experience the apex of subwoofer design.
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List Price$259.99
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Part # 295-514
  • Sweeps massive amounts of air!
  • Over 1-1/2" of total cone travel
  • 800 watts RMS power handling
  • The latest in subwoofer technology
  • Dual linear stiffness spiders limit distortion and rocking modes
  • Dual 2 ohm, 2-layer copper voice coils
  • Large vented pole piece and under-spider venting

Product Details

Dayton Audio UM15-22 15" Ultimax DVC Subwoofer 2 ohms Per Coil

The Ultimax Series of dual voice coil subwoofers, from Dayton Audio, are not for the faint of heart. Built using the latest in subwoofer technology, Ultimax subwoofers are the pinnacle of low frequency driver design. An Ultimax subwoofer tests the strength of your foundation with fast, articulate, gut-wrenching bass. 

Dual 2 ohm voice coils allow for stereo 2 ohm and mono 1 ohm wiring configurations when connecting to high current car audio and professional audio amplifiers to extract maximum power. For home audio applications, simply wire the voice coils in series for a benign 4 ohm load for greater amplifier compatibility.

To improve power handling, increase thermal management, and reduce power compression, Dayton Audio designed the Ultimax Series with large black anodized formers and vented pole pieces, under-spider ventilation, and two-layer copper voice coils.

Over 1-1/2" of travel (3/4" Xmax) is kept completely linear through the use of dual spiders that also limit distortion and rocking modes. "Tall-boy" rubber surrounds with integrated gaskets maintain driver surface area during extreme excursion moments. Thick, one-piece Nomex honeycomb covered cones are covered with woven, heavy-duty glass fibers creating ultra-still cones that resist deformation.

A large copper sleeve and copper pole cap in the motor reduce energy storage from inductance, with the side benefit of lowering distortion for "faster" response. Large dual-stacked, high-energy magnets handle the heavy lifting and bring Qts down to a level where Ultimax subwoofers can be used in vented or sealed cabinets and enclosures.

A knock-down 3.0 cubic foot subwoofer cabinet built specifically for the Dayton Audio Ultimax 15" subwoofer is available here. Save 50% off the price of the cabinet when you buy the cabinet and UM15-22 subwoofer (at regular price) together in this package only.

Cabinet recommendations: 
• Sealed 3.1 cubic ft. (net internal) with 3 lbs. of Acousta-Stuf polyfill, f3 of 35 Hz with a 0.707 Qtc alignment
• Vented 6.0 cubic ft. (net internal, not including driver or port volume) with 6 lbs. of Acousta-Stuf tuned to 18 Hz with two 4" diameter by 26" long flared ports for an f3 of 22 Hz. Larger cabinets and lower tuning frequencies are possible. 

Note: All parameters derived with voice coils wired in series.

Product Specifications
  • Nominal Diameter15"
  • Power Handling (RMS)800 Watts
  • Power Handling (max)1600 Watts
  • Impedance4 ohms
  • Frequency Response15 to 1,000 Hz
  • Sensitivity86.5 dB 2.83V/1m
  • Voice Coil Diameter2.5"
Thiele-Small Parameters
  • Resonant Frequency (Fs)19.5 Hz
  • DC Resistance (Re)3.4 ohms
  • Voice Coil Inductance (Le)1.31 mH
  • Mechanical Q (Qms)2.40
  • Electromagnetic Q (Qes)0.59
  • Total Q (Qts)0.47
  • Compliance Equivalent Volume (Vas)7.92 ft.³
  • Mechanical Compliance of Suspension (Cms)0.24 mm/N
  • Diaphragm Mass Inc. Airload (Mms)279.4g
  • Maximum Linear Excursion (Xmax)19 mm
  • Surface Area of Cone (Sd)814.6 cm²
Materials of Construction
  • Cone MaterialNomex / Glass Fiber
  • Surround MaterialRubber
  • Voice Coil Wire MaterialCopper
  • Voice Coil FormerAluminum
  • Basket / Frame MaterialCast Aluminum
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter15.28"
  • Baffle Cutout Diameter13.78"
  • Depth7.55"
  • Bolt Circle Diameter14.65"
  • # Mounting Holes8
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume3.98 ft.³
  • Sealed F333 Hz
  • Vented Volume11.1 ft.³
  • Vented F317 Hz
Dayton Audio UM15-22 15" Ultimax DVC Subwoofer 2 ohms Per Coil
  • BrandDayton Audio
  • ModelUM15-22
  • Part Number295-514
  • UPC844632099267
  • Product CategorySubwoofer Drivers
  • Unit of MeasureEA
  • Product Rating
    (25 Reviews)
  • Weight35.3 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.

View similar products to the Dayton Audio UM15-22 15" Ultimax DVC Subwoofer 2 ohms Per Coil
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Dayton Audio UM15-22 15" Ultimax DVC Subwoofer 2 ohms Per Coil
Dayton Audio UM15-22 15" Ultimax DVC Subwoofer 2 ohms Per Coil is rated 5.0 out of 5 by 25.
Rated 5 out of 5 by from Loudest at the deepestI gave this sub everything it needed to succeed. 2100 watts from a crown xls 2000. Bass boost from a art 31 band eq. I used the 4 cubic foot blank baffle box sold here, a few pounds of poly fill, tight bond 2 glue... I feel I got amazing results. This sub can pulse, throb,thunder, and quake. I can't even run full tilt, I know some neighbor is gonna bang on the front door " turn that down! " this sub is ice cold 50 and below. It doesn't distort on any of the low notes. Kodoes for dayton for giving real world box recommend volumes. Other companies as a selling point say you can put their subs in tiny boxes, but for low frequencies it's just a waste of time. Any system can benefit from these.
Date published: 2015-11-14
Rated 5 out of 5 by from Well beyond expectation!"Car Application"I knew these had to be awesome subs but I had no idea they would surpass my expectations. I initially bought 2 JBL GTO1514D subs because of past experience and they sounded great in a ported box. Let me state that I'm an "ole skool" 80s bass head who's been converted to the deep, rich, digital bass that later became popular in the early 90s. I'm sure anyone who reads this is more than likely aware of and heard Basstronics' "Bass, I Love You" track. It sounded great on the JBLs, which were amp'd by an RF Prime R1200D. This amp made them come alive when playing that track and yielded some very deep, full bass that made me smile. I knew, however, my ultimate goal was to purchase 2 Dayton Audio UM15-22s and replace the JBLs in the same 7.2 cuft ported enclosure that housed the JBLs. I finally pulled the trigger and bought the first one. After 10 seconds of listening, I knew I was in trouble!First off, as robust as the R1200D was for the JBLs, it's severely under-powering just the one UM15. I already have an amp I plan to purchase based on reviews and some research because I'll need a ton more power for 2 UM15s! Even as under-powered as it is, it still sounds quite amazing, dare I say as good as but just a hair quieter than the 2 JBLs. I was only allowing it to, as I like to call it, "hum" because of the break-in period.Next, it's so rich, much like Swiss chocolate. I can not believe the potential of this sub where lows are concerned. I can already hear and feel its depth and I'm certain it will be even louder once more power is applied. I have been cautious about breaking it in properly so I can only imagine what it will sound like once it's completely functional. It's so crisp and clean and accurate for a 15" sub. I thought the JBLs got a little muddy and attributed that to "just being 15s". The UM15 has changed my perspective on that! I had a JL Audio 12W7 years ago and that was the best subwoofer I'd owned until now. It hit very, very hard, clean, loud, and very deep but it had more than enough power with the JL Audio 1000/1 pushing its limits. I believe this sub will surpass it once more quality power is applied.I will most definitely follow up with another review as things progress. Thanx Dayton for such a mind-blowing, ear numbing product! Purchase this power with no hesitation and please look back. It's a sexy looking sub!
Date published: 2015-10-27
Rated 5 out of 5 by from Insane!I am not normally a person to write reviews about products but this is definently one that needs the extra gratification. The look of the subwoofer alone was almost enough for me to give the beast a shot at my setup which is in my apartment in college (yes I have gotten 2 noise complaints already). I have done custom car and boat audio for over 6 years and have had my experience with many diverse speakers. This setup was something I put an extreme amount of time into and it turned out flawless. This subwoofer just absolutely SLAMS. I only have it ran off of a BEHRINGER NU1000 INUKE 1000 watt amp and you can tell that the subwoofer could EASILY take another 600 watts before it would even start to sweat. My buddy lives in the building next to mine and a floor up (approx. 30-40 yards) and we've tested the bass travel and when its running at full tilt the stuff on his walls would be shaking. Its very clean and is much more punchy then I expected it to be, which for me, is perfect because I listen to a lot of skrillex and dubstep (club music). As for the rest of the equipment the highs are crystal clear and practically make your ears bleed if you have it full tilt for more than 15 seconds. All in all the subwoofer is a beautiful piece of art and creates the deep bass atmosphere effortlessly.
Date published: 2015-06-05
Rated 5 out of 5 by from Great sub!Great sub for the $. I originally had this sub in a 2 cf. Sealed box. ( " small mistake") operating at 1 ohm at 2000 watts in my service van behind drivers seat. Two problems occurred, 1- box too small, & 2- dimming lights due to excessive current draw from amp. Before this sub was installed I had another 15" running at 2 ohms, & had no electrical issues. So , I called tech support, for a ported box design. I am not a fan of round ports, so I opted for a slot load port. After speaking with Herb in tech support, & working around the size of the enclosure, I ended up with a, 18.5"Wx1"Hx26"L port in a 3.2 Cf.box. This set up was more efficient than a sealed box, & I was able to wire the sub for a 4 ohm load, sacrificed power output from amp down to 700watts, reduced current draw on electrical system,& achieved good results. This sub is power hungry, so I plan on up grading amp for more power in the near future.Please keep in mind that this is in a work van, nothing fancy, just looking for added low frequencies. I would definitely buy another UM 15 if the need arises. My only complaint would be lack of voice coil impedance choices.
Date published: 2015-04-09
Rated 5 out of 5 by from Great Sub, musical and great for moviesHi Everyone,I have had this sub for maybe 6 months now. Sounds wonderful. Great sub for the money. I just finished my Youtube video of the build. Search on Ultimax 15: The Copper Box That Rocks.
Date published: 2015-01-03
Rated 5 out of 5 by from Big bang for the buckWow, very well rounded speaker. great sound quality, good amount of volume, pushes a lot of air . I have it in 2.5 cubic ft modified ground shaker ported box highly dampened and braced. for a big speaker has excellent punch, very quick and best of all it goes very low
Date published: 2014-10-06
  • 2015-11-28T06:31CST
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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 UM15-22 15" Ultimax DVC Subwoofer 2 ohms Per Coil

For use in a 3-way, digitally active loudspeaker, I am wondering whether using a pair of UM 15s crossed upwards of 200hz would work well or whether in the upper bass a smaller woofer (e.g. UM12s) would be better?

Asked by: Robwrong

How would this perform in an infinite baffle set up in a car?

Asked by: Tpash
Yes these would work well for that application.
Answered by: MattP
Date published: 2015-11-24

"I would recommend internal dimensions of 24" x 20" x 23". After woofer and port displacement you will end up right at 6 cubic feet." What would you recommend for fitting the two 26" ports in the box?

Asked by: Lee112

So 2ohms per coil does that make this sub a 4ohm or is it still a 2ohm sub?

Asked by: Noob12345
This can be wired three different ways. Either one coil to each channel at 2 ohms, or in series at 4 ohms or parallel at 1 ohm.
Answered by: MattP
Date published: 2015-11-04

I have two of these using them for home theater.   What size box is ideal and what port(s) size is needed?  Size is not an issue. Thank you!

Asked by: bMullenix
I would recommend a 16 cubic foot enclosure per woofer, with a single 6" diameter, 18" long port which will tune to 14 Hz. If you build both woofers into one box, just double the volume and add a second identical port.
Answered by: MattP
Date published: 2015-11-04

Maybe a silly question, but since it's dual voice coil... If I have a 2-channel amplifier with 400 Watts x 2 continuous output at 2 ohms, does that add up to the 800 Watts RMS that this speaker is capable of..?

Asked by: wannalearn
Yes that would provide a total of 800 watts RMS to the woofer.
Answered by: MattP
Date published: 2015-10-30
  • 2015-11-28T06:59CST
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