---
product_id: 654255198
title: "UMII18-22 Ultimax II 18\" DVC Subwoofer 2 Ohm Per Coil"
brand: "dayton audio"
price: "$1396.79"
currency: USD
in_stock: true
reviews_count: 8
category: "Dayton Audio"
url: https://www.desertcart.us/products/654255198-umii18-22-ultimax-ii-18-dvc-subwoofer-2-ohm-per
store_origin: US
region: United States of America
---

# 1200W RMS power handling 18" carbon fiber cone for crisp bass Advanced venting for heat dissipation UMII18-22 Ultimax II 18" DVC Subwoofer 2 Ohm Per Coil

**Brand:** dayton audio
**Price:** $1396.79
**Availability:** ✅ In Stock

## Summary

> 🎶 Own the room with bass that moves you — Dayton Audio Ultimax II 18" Subwoofer

## Quick Answers

- **What is this?** UMII18-22 Ultimax II 18" DVC Subwoofer 2 Ohm Per Coil by dayton audio
- **How much does it cost?** $1396.79 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/654255198-umii18-22-ultimax-ii-18-dvc-subwoofer-2-ohm-per)

## Best For

- dayton audio enthusiasts

## Why This Product

- Trusted dayton audio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Cool Under Pressure:** Extensive frame and motor venting minimize heat buildup, keeping performance consistent during marathon sessions.
- • **Versatile Installation:** Optimized for sealed or vented enclosures, giving you the freedom to craft your ultimate soundscape.
- • **Unmatched Power Handling:** 4-layer 3" voice coil supports a staggering 1200W RMS for audiophile-grade volume and clarity.
- • **Deep, Distortion-Free Bass:** ±28mm xmax and aluminum shorting caps ensure powerful, clean lows that command attention.
- • **Lightweight Carbon Fiber Cone:** Woven carbon fiber delivers lightning-fast, detailed response without sacrificing durability.

## Overview

The Dayton Audio UMII18-22 Ultimax II is an 18-inch dual voice coil subwoofer engineered for professional-grade audio performance. Featuring a rigid carbon fiber cone, 1200W RMS power handling, and advanced heat dissipation technology, it delivers deep, distortion-free bass ideal for home theaters, car audio, and high-end music setups. Its design supports both sealed and vented enclosures, offering flexibility for custom installations.

## Description

Buy Dayton Audio UMII18-22 Ultimax II 18" DVC Subwoofer 2 Ohm Per Coil: Subwoofers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Amazing subwoofer will blow your mind. buy it. buy it. buy it! do not hesitate!!!!!! - OK so I am loving this subwoofer. I currently am living with someone that runs two parts express knockdown flat pack sealed 15 inch boxes which is the exact same door 15 inch set up that I am currently about to do. He is running UM – 15–22 gen ones supposedly the gen 2’s sound better can handle a little bit more power. And is overall a better sub I haven’t heard it, but I love the look of both models. I am in love with the sound coming from the first generation subwoofer along with the Behringer NX 6000 D that we are both running all around is an amazing sub it digs deep it sounds absolutely amazing. It’ll blow your mind on DIY builds it functions amazing you can throw a lot of power at it and they will not blow. They will blow your mind in my opinion. The best bang for the book there is to buy if you run the right DSP settings, which it is a pain in the ass, but you can get them to sound absolutely phenomenal and cranked them to outrageous levels without bottoming out or distortion. They are all around a durable sub and I very much like them. I am super super super impressed. I cannot wait to buy a second one and get them to installed in my boxes and running. I will update this with videos very soon.!!!!
Review: Well made quality subwoofer. - Terrific sound quality. Looks and sounds amazing.

## Features

- A large aluminum shorting cap and sleeve help keep inductance linear to guarantee minimal distortion
- The rigid yet lightweight woven carbon fiber cone delivers quick, detailed, and accurate response
- With ±28 mm xmax, you can expect powerful and deep bass response, taking your audio experience to the next level
- Equipped with a 4-layer 3" flat wound voice coil that can handle a staggering 1,200 watts RMS, you can expand the boundaries of audio excellence
- The frame and motor include extensive venting ensuring efficient heat dissipation for consistent and reliable operation, while minimizing power compression
- Dual spiders maintain cone linearity even at extremely high excursion levels, providing peak audio performance at all times
- Optimized for compact sealed enclosures, but capable of exceptional low frequency extension in vented designs - offering you the freedom to create the perfect audio setup

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DBRHBF1Y |
| Audio Driver Size | 18 Inches |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | #49,611 in Electronics ( See Top 100 in Electronics ) #346 in Car Component Subwoofers |
| Color | Black |
| Compatible Devices | Television, Laptop |
| Control Method | Touch |
| Customer Package Type | Non-Flat Free Package |
| Customer Reviews | 5.0 5.0 out of 5 stars (27) |
| Date First Available | July 31, 2024 |
| Global Trade Identification Number | 00848791010255 |
| Included Components | Speaker |
| Is Waterproof | FALSE |
| Item Weight | 47.6 pounds |
| Item model number | UMII18-22 |
| Manufacturer | Dayton Audio |
| Material | Carbon Fiber, Aluminum |
| Model Name | Dayton Audio UMII18-22 |
| Mounting Type | Flush Mount |
| Number Of Circuits | 1 |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Product Dimensions | 10"D x 10"W x 8"H |
| Recommended Uses For Product | For Home Theater Systems, For Car Audio, For High-End Music Setups |
| Series Number | 2 |
| Set Name | Ultimax II Series |
| Shape | rectangular prism |
| Speaker Size | 13 Inches |
| Speaker Type | Subwoofer |
| Specific Uses For Product | Home Theater, Car Audio, Audiophile, Gaming, Podcasting, DJing |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 18 Inches |
| Surround Sound Channel Configuration | 5.1, 7.1 |
| UPC | 848791010255 |
| Unit Count | 1.0 Count |
| Warranty Type | Full |
| Wireless Communication Technology | No Wireless Communication Technology |
| Woofer Diameter | 18 Inches |

## Product Details

- **Audio Output Mode:** Surround
- **Brand:** Dayton Audio
- **Connectivity Technology:** Wired
- **Frequency Response:** 22
- **Speaker Maximum Output Power:** 400 Watts

## Images

![UMII18-22 Ultimax II 18" DVC Subwoofer 2 Ohm Per Coil - Image 1](https://m.media-amazon.com/images/I/71SCpYUA5bL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Amazing subwoofer will blow your mind. buy it. buy it. buy it! do not hesitate!!!!!!
*by C***N on December 26, 2025*

OK so I am loving this subwoofer. I currently am living with someone that runs two parts express knockdown flat pack sealed 15 inch boxes which is the exact same door 15 inch set up that I am currently about to do. He is running UM – 15–22 gen ones supposedly the gen 2’s sound better can handle a little bit more power. And is overall a better sub I haven’t heard it, but I love the look of both models. I am in love with the sound coming from the first generation subwoofer along with the Behringer NX 6000 D that we are both running all around is an amazing sub it digs deep it sounds absolutely amazing. It’ll blow your mind on DIY builds it functions amazing you can throw a lot of power at it and they will not blow. They will blow your mind in my opinion. The best bang for the book there is to buy if you run the right DSP settings, which it is a pain in the ass, but you can get them to sound absolutely phenomenal and cranked them to outrageous levels without bottoming out or distortion. They are all around a durable sub and I very much like them. I am super super super impressed. I cannot wait to buy a second one and get them to installed in my boxes and running. I will update this with videos very soon.!!!!

### ⭐⭐⭐⭐⭐ Well made quality subwoofer.
*by P***L on February 11, 2026*

Terrific sound quality. Looks and sounds amazing.

### ⭐⭐⭐⭐⭐ Hella good and clean bass
*by R***T on January 11, 2026*

The most powerful 8 inch sub i own and wow the xmax/excursion is crazy i built a vented box with the f3 tuned to 29 insted of the 33 AND IT RIPSSSS!!!

## Frequently Bought Together

- Dayton Audio UMII18-22 Ultimax II 18" DVC Subwoofer 2 Ohm Per Coil
- Facmogu 2PCS 2.2 Inch Square 2-Way Speaker Box Terminal Cup with Banana Plugs, Screw Type Binding Post Subwoofer Box Speaker Terminal Plates for DIY Home Car Stereo
- Scosche LOC2SL Line Output Converter with Remote Control Knob - 2CH High/Low RCA Converter Car Audio - Ideal for Subwoofer Amp - Line Level Converter for Car Stereo - Easy Installation - Quality Sound

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-10*