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Dayton Audio UM12-22 12" Ultimax DVC Subwoofer 2 ohms Per Coil

Brand:| Model: UM12-22
Product Video
Overview
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.
Highlights
  • Thick, one-piece Nomex honeycomb covered cone with woven heavy-duty glass-fiber
  • Tall-boy rubber surround for extra-long linear excursion without reducing cone surface area
  • 600 watts RMS power handling
  • Copper shorting rings and cap reduce distortion due to inductance variations
  • Dual 2 ohm, 2-layer copper voice coils
  • Large vented pole piece and under-spider venting
  • Black anodized aluminum former and black pole improves heat dissipation
Part # 
295-512
Weight: 24.95 lbs.  
IN STOCK
List Price$233.99
Regular Price$179.90
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Sale Price
$159.00
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List Price:$19.99
Part # 295-512
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Product Details

Dayton Audio UM12-22 12" 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 2.0 cubic foot subwoofer cabinet built specifically for the Dayton Audio Ultimax 12" subwoofer is available here. Save 50% off the price of the cabinet when you buy the cabinet and UM12-22 subwoofer (at regular price) together in this package only.

Cabinet recommendations: 
• Sealed 2.0 cubic ft. (net internal) with 1 lbs. of Acousta-Stuf polyfill, f3 of 36 Hz with a 0.707 Qtc alignment
• Vented 4.0 cubic ft. (net internal, not including driver or port volume) tuned to 20 Hz with a 10" wide by 1.5" high slot port that is 25" long, which yields an f3 of 19 Hz

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



Product Specifications
  • Nominal Diameter12"
  • Power Handling (RMS)600 Watts
  • Power Handling (max)1200 Watts
  • Impedance2+2 ohms
  • Frequency Response20 to 1,000 Hz
  • Sensitivity84 dB 1W/1m
  • Voice Coil Diameter2.5"
Thiele-Small Parameters
  • Resonant Frequency (Fs)24.9 Hz
  • DC Resistance (Re)3.3 ohms
  • Voice Coil Inductance (Le)1.22 mH
  • Mechanical Q (Qms)3.45
  • Electromagnetic Q (Qes)0.71
  • Total Q (Qts)0.59
  • Compliance Equivalent Volume (Vas)2.53 ft.³
  • Mechanical Compliance of Suspension (Cms)0.21 mm/N
  • BL Product (BL)11.8 Tm
  • Diaphragm Mass Inc. Airload (Mms)193.2g
  • Maximum Linear Excursion (Xmax)19 mm
  • Surface Area of Cone (Sd)490.9 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 Diameter12.38"
  • Baffle Cutout Diameter11.22"
  • Depth6.22"
  • Bolt Circle Diameter11.69"
  • # Mounting Holes8
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume2.8 ft.³
  • Sealed F334 Hz
  • Vented Volume5.58 ft.³
  • Vented F317 Hz
Dayton Audio UM12-22 12" Ultimax DVC Subwoofer 2 ohms Per Coil
  • BrandDayton Audio
  • ModelUM12-22
  • Part Number295-512
  • UPC844632099250
  • Product CategorySubwoofer Drivers
  • Unit of MeasureEA
  • Product Rating
    (12 Reviews)
  • Weight24.95 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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Reviews

Dayton Audio UM12-22 12" Ultimax DVC Subwoofer 2 ohms Per Coil
Dayton Audio UM12-22 12" Ultimax DVC Subwoofer 2 ohms Per Coil is rated 4.75 out of 5 by 12.
Rated 5 out of 5 by from Awesome SubI recently aquired a passive 12" Cerwin Vega sub(huge box for those unfamiliar). The surround needed replaced but I decided to make this thing powered. I purchased this ultimax sub and the Dayton Sp500 plate amp. Sub was a perfect fit and 30 minutes later I had the amp installed. All I can say is WOW! I love the consistent quality and super fast shipping parts express brings. You guys rock and I am too! Thanks. Thinking of purchasing this sub, think no more, just do it!
Date published: 2014-09-18
Rated 3 out of 5 by from UnimpressedI bought this speaker because it was cheap when purchased with the enclosure kit, which I wanted to use with a B&C 12''. My 2 other subs are B&C 12'' and 18'' placed in custom enclosures. Those are impressive speakers. The Dayton Audio Ultimax is shamed when played next to B&C speakers. A good B&C 12'' could be had for about $150-250, and based on the sound quality difference, I would say that the Ultimax 12'' is not even worth the price.
Date published: 2013-09-15
Rated 5 out of 5 by from Excellent Subwoofer DriverThe Dayton UM12-22 is a 12" dual 2 ohm voice coil subwoofer with geneous excursion capability and moderate sensitivity. The cast frame with rubber gasket, cone, rubber surround, spider and magnet appear to be of high quality. The Thiele Small parameters measure close to specification and were esentially identical for both drivers tested. Performance and power handling in a completely filled 2 cubic foot enclosure is impressive. The output is clean and it handled everthing the BASH 300 plate amplifier could dish out. Frequency response reaches to nearly 20Hz with typical room gain. All-in-all a fine 12" subwoofer.
Date published: 2013-05-14
Rated 5 out of 5 by from first sub diy,,very happyI chose the 12" ultimax as my first diy sub design/build. I have it providing my low end with the 5 tri trix I have already built (3 sealed, 2 vented) I chose to build the slotted port 4.0 cubic feet net enclosure. I paired this sub with the BASH 500 amp placed in it's own box. I am very happy with the results so far. It is a very large box, but I love how "mean" it looks. i have cranked the system up and the sound is very clean and clear with zero distortion.
Date published: 2013-04-30
Rated 4 out of 5 by from NiceI had some reservations about this driver being it has a small motor but pure morbid curiosity got the best of me. Built a 20.5" w x 22" w x 26"d ported and tuned to 22 hertz. Powered by an old PE 350 watt plate amp I had. Box is corner loaded in my room as this was purpose built for home theater. All I can say is nice. In my room it shakes the pictures on the walls and you can feel it through my concrete floors. If you need more than that, than I would move on. I am no carpenter but here are some pics. I know it looks like an SV$ but there is no port noise with the triple ports and gives me some options for tuning.
Date published: 2013-04-13
Rated 5 out of 5 by from Phenominal value in a bass driverIf you are looking for a bass driver for an all in one speaker, this one is a great choice. Being a 12" driver, you can set the crossover frequency high enough that it will unload whatever midrange you are using from excessive excursion requirements while still maintaining a reasonable radiation pattern. A 12" driver is essentially omnidirectional below around 300 Hz.In my application, I am crossing it over at 176 Hz using the Behringer DCX2496 with a L-R crossover at 24dB/octave to a 7" kevlar midrange. It blends very well with the midrange and has a ton of low bass and in a sealed box has good transient response.In this application, I am extremely satisfied. If I were going to build a separate subwoofer I would use the 15" version as it is almost the same price and the SD is 65% greater.If you are going to use this driver, have plenty of amplifier power because it can handle huge amounts. I am driving it with a Crown Studio Reference I that can put out over 1,100 watts/channel into 4 ohms. At around 80 Hz the amp will go into clipping before the driver complains. It is a real winner and I would recommend it highly
Date published: 2013-04-01

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 UM12-22 12" Ultimax DVC Subwoofer 2 ohms Per Coil

I was looking at this sub and not sure if it is the one for me. I am looking for a sub that has fairly good sound quality with little distortion at high volumes but also has some thump behind it, would this be a suitable sub?

Asked by: Ncstate17
In my opinion, this sub is the best combination of output and SQ that we offer in this price range.
Answered by: MattP
Date published: 2014-10-22

The Xmax is 19mm, but what is the mechanical max before bottoming out? Is it too only 19 mm each way, or is it somewhat larger than that? Also, is its suspension appropriate for down-firing use? Thanks, Mike

Asked by: Mike 1945

I have a ported box that is 2.5 ft3, port being 4" 10" long. Wondering if this woofer will work in this size or would it be better if I closed the port and make it sealed? I'll be using it for 90% movies and have 500watt amp!

Asked by: mustang
That woofer is much better suited in a sealed box of that volume than ported.
Answered by: MattP
Date published: 2014-10-15

Thanks for the quick response, my last question would be what size do you recommend and why, I can only fit a 10, or maybe 12, also I plan on using two.

Asked by: 93sc300
If you are referring to which woofer size to use, we cannot give you a definitive answer. The 12 will require a larger box and play slightly lower/louder, but two tens will still be substantial. A pair of tens will need about 1.25-1.5 cubic feet total, where as a pair of 12's will need about twice that volume.
Answered by: MattP
Date published: 2014-10-08

In a downfiring application, how much clearance do you need between the mounting surface and the floor for the full extension of the sub (I realize that some noise from air displacement can occur even before actual contact occurs).

Asked by: gipper
I usually recommend a distance about 1/3 the diameter of the woofer for a downfiring application.
Answered by: MattP
Date published: 2014-10-07

looking to buy a sub for a 1-1.5 cubic feet box for my car, ported or sealed box, looking for clean bass with a wide range, I want low bass but good response, currently using an orion hcca 10" with a jbl gto1201 amp rated at 1114 watts rms, any recommend?

Asked by: 93SC300
This Ultimax would be a good choice for about 1.5 cubic feet sealed. It wont have a problem reaching into the 20's and still extend well above 100 for good implementation.
Answered by: MattP
Date published: 2014-10-08

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