5 out of 5
Dayton Audio UM12-22 12" Ultimax DVC Subwoofer 2 ohms Per Coil
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Product Description
Manufacturer Part Number: UM12-22
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.
Key Features:
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 . Save over $30 off the price of the cabinet when you buy the cabinet and UM12-22 subwoofer (at regular price) together in 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.
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.
Key Features:
- 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
Dayton Audio UM12-22 12" Ultimax DVC Subwoofer 2 ohms Per Coil
If you want outrageous amounts of bass, you gotta move some air
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.
The versatility you need for mobile, home, or pro subwoofer excellence
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.
Built to produce massive low frequency output and keep on doing it
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 strong motor takes you to wherever you want to be
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.
Save time, effort, and money! Combine an Ultimax subwoofer and a knockdown enclosure!
A knock-down 2.0 cubic foot subwoofer cabinet built specifically for the Dayton Audio Ultimax 12" subwoofer is available . Save over $30 off the price of the cabinet when you buy the cabinet and UM12-22 subwoofer (at regular price) together in 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 Details | |
|---|---|
| Brand | Dayton Audio |
| Model | UM12-22 |
| Part Number | 295-512 |
| UPC | 844632099250 |
| Unit of Measure | Each |
| Weight | 24.95 |
Product Specifications | |
|---|---|
| Nominal Diameter | 12" |
| Bolt Circle Diameter | 11.69 |
| Moving Mass Of Diaphragm (Mmd) | 270 |
| Power Handling (RMS) | 600 Watts |
| Power Handling (MAX) | 1200 Watts |
| Impedance | 4Ω |
| Frequency Response | 20 to 1,000Hz |
| Sensitivity | 86.7dB 2.83V/1m |
| Voice Coil Diameter | 2.5" |
Thiele-Small Parameters | |
|---|---|
| Resonant Frequency (Fs) | 26.2Hz |
| DC Resistance (Re) | 3.2Ω |
| Voice Coil Inductance (Le) | 1.25mH |
| Mechanical Q (Qms) | 3.62 |
| Electromagnetic Q (Qes) | 0.71 |
| Total Q (Qts) | 0.59 |
| Compliance Equivalent Volume (Vas) | 1.65ft³ |
| Mechanical Compliance of Suspension (Cms) | 0.14mm/N |
| BL Product (BL) | 14.2T·m |
| Maximum Linear Excursion (Xmax) | 19mm |
| Surface Area of Cone (Sd) | 490.9cm² |
Materials of Construction | |
|---|---|
| Cone Material | Nomex / Glass Fiber |
| Surround Material | Rubber |
| Voice Coil Wire Material | Copper |
| Voice Coil Former | Aluminum |
| Basket / Frame Material | Cast Aluminum |
| Magnet Material | Ferrite |
Mounting Information | |
|---|---|
| Overall Outside Diameter | 12.32" |
| Baffle Cutout Diameter | 11.2" |
| Depth | 6.22" |
| # Mounting Holes | 8 |
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion) | |
|---|---|
| Sealed Volume | 2.8ft³ |
| Sealed F3 | 34Hz |
| Vented Volume | 5.58ft³ |
| Vented F3 | 17Hz |
Attention CA Residents: Prop 65 Warning
WARNING:
This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.
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Customer Reviews
By Jennifer J. Hall
Date: September 11, 2017
What a great driver! I run two of these in my theater and could not be more pleased. great product at a great price-point.
Rating: 
[5 of 5 Stars!]
[5 of 5 Stars!]
By jarred
Date: January 22, 2017
Very good subs for the money, probably the best bang for your buck out there if your looking for a driver that will get very low with ease. I have two on a Crown xls 2402. They sound great. I'm also about to put two 1034; ultimax in my work truck. They sound fine sealed and that what they suggest, but they really shine when you have then in a large ported enclosure. Great product. And something odd to add, I was sent 10s when I ordered 12s, I kept them and ordered more 12s... They mount in the same box as the 10s, perfectly. So I'm not sure if there is just a difference in power handling and the size of the motor, but yeah, the 10s and 12s are the same overall diameter, so I'm guessing they have the same cone area?
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
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