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UM18-22 18" Ultimax DVC Subwoofer 2 ohm Per Coil
Quick Overview
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!Product Highlights
- 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
Product Manuals / Spec Sheets / Downloads
Dayton Audio UM18-22 Specification SheetDayton Audio UM18-22 Graphs/FRD/ZMA Data File
Buying Options
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!
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 voice coil diameter has been increased to 3 inches, for even more thermal dissipation area that allows the 18” model to withstand 1000 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.
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.
Check out this UM18-22 review!
| Speaker Series | Ultimax Series |
| Model Number | UM18-22 |
| Color | Black |
| Unit of Measure | Each |
| UPC | 848791001062 |
| Warranty - Parts | 5 Years |
| Warranty - Labor | 5 Years |
| Product Shipping Weight (lbs.) | 44.3 |
| Speaker Type | Subwoofer |
| Nominal Diameter | 18" |
| Power Handling (RMS) | 1,000 watts |
| Power Handling (max) | 2,000 watts |
| Continuous Program Power | -- |
| Impedance | 2+2 ohms |
| Sensitivity | 89.5 dB @ 2.83V/1m |
| Frequency Response | 19 - 500 Hz |
| Voice Coil Diameter | 75 mm |
| Magnet Weight | -- |
| DC Resistance (Re) | 4.3 ohms |
| Voice Coil Inductance (Le) | 1.5 mH @ 1 kHz |
| Resonant Frequency (Fs) | 26.2 Hz |
| Mechanical Q (Qms) | 4.05 |
| Electromagnetic Q (Qes) | 0.85 |
| Total Q (Qts) | 0.70 |
| Diaphragm Mass Inc. Airload (Mms) | 532g |
| Moving Mass Of Diaphragm (Mmd) | -- |
| Mechanical Compliance of Suspension (Cms) | 0.07 mm/N |
| Surface Area Of Cone (Sd) | 1,219 cm² |
| Volume of Displacement (Vd) | 2,681 cm³ |
| BL Product (BL) | 21.1 Tm |
| Compliance Equivalent Volume (Vas) | 144.7 liters |
| Maximum Linear Excursion (Xmax) | 22 mm |
| Drivers Mechanical Losses (Rms) | -- |
| Cone / Diaphragm Material | Nomex Cone |
| Entry / Exit Diameter | -- |
| Surround Material | Rubber |
| Voice Coil Wire Material | -- |
| Voice Coil Former | -- |
| Basket/Frame Material | Cast Aluminum |
| Magnet Material | Ferrite |
| Overall Outside Diameter | 462 mm |
| Overall Depth | 248 mm |
| Baffle Cutout Diameter | 425.5 mm |
| # Mounting Holes | 8 |
| Mounting Hole Diameter | -- |
| Bolt Circle Diameter | -- |
| Product Weight | -- |