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

Dayton Audio
Part #295-512

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

Dayton Audio
Part #295-512  
Model: UM12-22
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
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Overview

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

Dayton Audio UM12-22 12" Ultimax DVC Subwoofer

Experience the Apex of Subwoofer Design

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.

Key Specs:

  • Nominal Diameter: 12"
  • Power Handling (RMS): 600W
  • Power Handling (MAX): 1,200W
  • Impedance: Dual Voice Coil,2Ω+2Ω
  • Frequency Response: 20-1,000 Hz
  • Sensitivity: 86.3 dB 2.83V/1m
  • Voice Coil Diameter: 2.5"
  • Maximum Linear Excursion: 19mm

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We stand behind our products and our warranty is a demonstration of our commitment to quality and reliability.

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Built To Move Some Air

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.

Industry Leading Motor Strength

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.

Unmatched Versatility

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.

Feel Maximum Power On The Road

Build by Kim B.

The Ultimax UM12-22 12" Subwoofer delivers more than enough power to rock the road ways. The sub is a perfect pick to add massive low end to your mobile audio speaker build. If you are looking for fast, articulate bass that really fills your car, look no further than the UM12-22.

Build Your Own Personal Cinema

Build by Alejandro C.

Not only is the UM12-22 great for car audio, it fits perfectly at home in your theater or listening room. The detailed response and low end strength lets you feel the rumble in your movies and gives you a concert-like music listening experience.

Cabinet Recommendations:

  • Sealed: 1.5 cubic ft. (net internal, not including driver volume) with 1 lbs. of Acousta-Stuf polyfill produces an f3 of 36 Hz with a 0.9 Qtc alignment
  • Vented: 2 cubic ft. (net internal, not including driver or port volume) produces an f3 of 25 Hz

Build by Aaron W.

Shop the Whole Ultimax Series

UM18-22 18"

  • Nominal Diameter: 18"
  • Frequency Response: 19-500Hz

Shop 18"

UM15-22 15"

  • Nominal Diameter: 15"
  • Frequency Response: 15-1,000Hz

Shop 15"

UM10-22 10"

  • Nominal Diameter: 10"
  • Frequency Response: 25-1,000Hz

Shop 10"

UM8-22 8"

  • Nominal Diameter: 8"
  • Frequency Response: 30-800Hz

Shop 8"

Shop All Ultimax Drivers and Kits
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Additional Resources

We pride ourselves on being an authority in the speaker building and DIY community. With over 60 years of combined engineering experience, our team of engineers is here to help with your build. Below are some useful tools to get you started.

Learn More At The Resource Center

Product Details

BrandDayton Audio
ModelUM12-22
Part Number295-512
UPC844632099250
Unit of MeasureEach
Weight24.95

Product Specifications

Nominal Diameter12"
Bolt Circle Diameter11.69
Power Handling (RMS)600 Watts
Power Handling (MAX)1200 Watts
Impedance4Ω
Frequency Response20 to 1,000Hz
Sensitivity86.3dB 2.83V/1m
Voice Coil Diameter2.5"

Thiele-Small Parameters

Resonant Frequency (Fs)31.8Hz
DC Resistance (Re)3.7Ω
Voice Coil Inductance (Le)0.78mH
Mechanical Q (Qms)2.9
Electromagnetic Q (Qes)1.05
Total Q (Qts)0.77
Compliance Equivalent Volume (Vas)1.45ft³
Mechanical Compliance of Suspension (Cms)0.12mm/N
BL Product (BL)12T·m
Diaphragm Mass Inc. Airload (Mms)206g
Maximum Linear Excursion (Xmax)19mm
Surface Area of Cone (Sd)490.9cm²

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 Diameter12.32"
Baffle Cutout Diameter11.1"
Depth6.625"
# Mounting Holes8

Parts Express Staff Recommended Enclosure Volume

Sealed Volume1.5ft³
Sealed F336Hz
Vented Volume2ft³
Vented F325Hz

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