• Dayton Audio UM18-22 18" Ultimax DVC Subwoofer 2 ohms Per Coil

Dayton Audio UM18-22 18" Ultimax DVC Subwoofer 2 ohms Per Coil

Dayton Audio
Part #295-518

Dayton Audio UM18-22 18" Ultimax DVC Subwoofer 2 ohms Per Coil

Dayton Audio
Part #295-518  
Dayton Audio’s Ultimax Series DVC subwoofers are purpose-built to move tons of air and create clean, articulate, fast bass. Experience the apex of subwoofer design!
Key Features
  • 18" design for enormous air movement
  • Over 2" of total cone travel!
  • 1000 watts RMS power handling
  • Dual mirror-imaged linear spiders ensure distortion-free excursion
  • Dual 2 ohm, 2-layer copper voice coils
  • Large vented pole piece and under-spider venting
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Overview

Dayton Audio UM18-22 18" Ultimax DVC Subwoofer 2 ohms Per Coil

Dayton Audio UM18-22 18" Ultimax DVC Subwoofer

Experience the Apex of Subwoofer Design

With the UM18-22 Ultimax 18" driver, Dayton Audio has taken everything about the respected Dayton Audio Ultimax subwoofers to the extreme! Providing over 2" of peak-to-peak excursion, the Ultimax 18 sweeps over six liters of air with each stroke! Truly not for the faint of heart!

Key Specs:

  • Nominal Diameter: 18"
  • Power Handling (RMS): 1,000W
  • Power Handling (MAX): 2,000W
  • Impedance: 4Ω
  • Frequency Response: 19 - 500Hz
  • Sensitivity: 89.5 dB 2.83V/1m
  • Voice Coil Diameter: 3"
  • Maximum Linear Excursion: 22mm

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We've Got Your Back

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

Like the rest of the Ultimax series, the UM18-22 plays it clean, low, fast, and LOUD. Designed to excel in either sealed or vented enclosures, it features an ultra-powerful triple stack of high-grade ferrite ceramic magnets for ultra-high force and exceptional control, plus dual aluminum shorting rings above and below the magnetic gap for minimized inductance, "faster"-sounding bass response, and perfect magnetic symmetry.

The huge 18" Nomex honeycomb composite curved cone features woven fiberglass outer skins for the ultimate in rigidity and resistance to damage, while the "tall-boy" rubber surround with integral gasket supports extreme stroke with linearity and durability. Dual 8" spiders are mirror-imaged, to keep the 2" of excursion completely linear and provide cancellation of distortion due to compliance asymmetry, for ultra-low mechanical distortion even at the outer limits of travel. And it's all held in perfect alignment by a rigid cast aluminum 12-spoke frame, for stability in any mounting position.

Unmatched Versatility

The voice coil diameter has been increased to 3 inches, for even more thermal dissipation area that allows the 18" model to withstand 1,000 watts of punishing bass power continuously without thermal fatigue. Dual 2-ohm voice coils allow for stereo 2 ohm operation, or mono operation in 1 ohm or 4 ohm configurations, for true design flexibility.

Feel Maximum Power On The Road

Build by ItsGary

The Ultimax UM18-22 18" 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 UM18-22.

Build Your Own Personal Cinema

Build by Nikolai L.

Not only is the UM18-22 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.

Put your home's construction to the test with the phenomenal bass output of this 18" beast!

Cabinet Recommendations:

  • Sealed (home theater/music): 4 cubic ft. (net internal, not including driver volume) produces an f3 of 33 Hz with a 0.85 Qtc alignment
  • Vented: 6 cubic ft. (net internal, not including driver or port volume) produces an f3 of 22 Hz. Larger cabinets and lower tuning frequencies are possible.

Build by Aaron W.

Shop the Whole Ultimax Series

UM15-22 15"

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

UM12-22 12"

Nominal Diameter: 12"
Frequency Response: 20-1,000Hz

    Shop 12"

    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
        Learn More
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        The Dayton Audio UM18-22 Is Used In The Following Kits

        Dayton Audio 18" Ultimax Subwoofer and Cabinet Bundle

        Build the ultimate subwoofer capable of moving over six liters of air with each stroke! Truly not for the faint of heart! CNC-machined subwoofer cabinet and the Dayton Audio UM18-22 18" subwoofer. Save over $45.00 off the original price when you buy this package.

        Build Your Own 18" Subwoofer

        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
        ModelUM18-22
        Part Number295-518
        UPC848791001062
        Unit of MeasureEach
        Weight44.3

        Product Specifications

        Nominal Diameter18"
        Bolt Circle Diameter17.4
        Power Handling (RMS)1000 Watts
        Power Handling (MAX)2000 Watts
        Impedance4Ω
        Frequency Response19 to 500Hz
        Sensitivity89.5dB 2.83V/1m
        Voice Coil Diameter3"

        Thiele-Small Parameters

        Resonant Frequency (Fs)26.2Hz
        DC Resistance (Re)4.3Ω
        Voice Coil Inductance (Le)1.5mH
        Mechanical Q (Qms)4.05
        Electromagnetic Q (Qes)0.85
        Total Q (Qts)0.7
        Compliance Equivalent Volume (Vas)5.11ft³
        Mechanical Compliance of Suspension (Cms)0.07mm/N
        BL Product (BL)21.1T·m
        Diaphragm Mass Inc. Airload (Mms)532g
        Maximum Linear Excursion (Xmax)22mm
        Surface Area of Cone (Sd)1219cm²

        Materials of Construction

        Cone MaterialNomex / Glass Fiber
        Surround MaterialRubber
        Voice Coil FormerAluminum
        Basket / Frame MaterialCast Aluminum
        Magnet MaterialFerrite

        Mounting Information

        Overall Outside Diameter18.25"
        Baffle Cutout Diameter16.75"
        Depth10.25"
        # Mounting Holes8

        Parts Express Staff Recommended Enclosure Volume

        Sealed Volume4ft³
        Sealed F333Hz
        Vented Volume6ft³
        Vented F322Hz

        Specifications

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