---
product_id: 739605298
title: "Dayton Audio UMII18-22 Ultimax II 18\" DVC Subwoofer 2 Ohm Per Coil"
brand: "dayton audio"
price: "A$171"
currency: AUD
in_stock: false
reviews_count: 5
url: https://www.desertcart.com.au/products/739605298-dayton-audio-umii18-22-ultimax-ii-18-dvc-subwoofer-2
store_origin: AU
region: Australia
---

# ±28mm xmax for deep bass 1200W RMS power handling 4-layer 3" flat wound voice coil Dayton Audio UMII18-22 Ultimax II 18" DVC Subwoofer 2 Ohm Per Coil

**Brand:** dayton audio
**Price:** A$171
**Availability:** ❌ Out of Stock

## Summary

> 🎵 Unleash seismic bass with precision-engineered power!

## Quick Answers

- **What is this?** Dayton Audio UMII18-22 Ultimax II 18" DVC Subwoofer 2 Ohm Per Coil by dayton audio
- **How much does it cost?** A$171 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/739605298-dayton-audio-umii18-22-ultimax-ii-18-dvc-subwoofer-2)

## 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

- • **Thermal Efficiency:** Extensive venting and heat dissipation minimize power compression for consistent performance.
- • **Cutting-Edge Materials:** Lightweight woven carbon fiber cone ensures quick, detailed, and accurate sound response.
- • **Powerhouse Performance:** Handles a staggering 1200 watts RMS for mind-blowing bass impact.
- • **Precision Bass Control:** ±28 mm xmax excursion delivers deep, powerful, and distortion-free low frequencies.
- • **Versatile Installation:** Optimized for compact sealed enclosures but excels in vented designs for ultimate audio customization.

## Overview

The Dayton Audio UMII18-22 Ultimax II 18" DVC Subwoofer combines advanced carbon fiber cone technology, a robust 4-layer voice coil, and superior excursion capability to deliver deep, distortion-free bass. Designed for high power handling (1200W RMS) and efficient heat management, it’s perfect for audiophiles seeking premium low-frequency performance in both sealed and vented enclosures.

## Description

Introducing the UMII18-22 Ultimax II 18" Carbon Fiber Cone subwoofer from Dayton Audio - the next evolution of low frequency excellence. Building upon the legendary reputation of its predecessor, this subwoofer has what it takes to deliver an exceptional listening experience. With improved excursion capability, lower distortion, higher power handling, better efficiency, and increased output, this driver was purposefully engineered to provide mind-blowing bass that will leave you breathless. Discover unparalleled bass immersion with the UMII18-22 subwoofer, delivering precision and power for those in pursuit of the ultimate sound.

Review: 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: Great sounding woofer. I went with the Parts Express recommend sealed enclosure and paired it with the Dayton SPA500 amplifier. One of the keys to this woofer in my opinion is to let it break in properly. It was a little weak the first few of days of play but it definitely woke up after the break in period! Definitely a good value if are into building your own speakers.

## 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 |
| Colour | Black |
| Compatible devices | Smartphone, Tablet, MP3 Player, Desktop, Television, Projector, Laptop |
| Control method | Touch |
| Included components | Speaker |
| Is waterproof | FALSE |
| Item model number | UMII18-22 |
| Manufacturer | Dayton Audio |
| Material | Aluminum |
| Model name | Dayton Audio UMII18-22 |
| Mounting type | Flush Mount |
| Number of Items | 1 |
| Power source | Corded Electric |
| Product dimensions | 25.4D x 25.4W x 20.3H centimeters |
| Recommended uses for product | For Home Theater Systems, For Car Audio, For High-End Music Setups |
| Speaker size | 13 Inches |
| Speaker type | Subwoofer |
| Subwoofer diameter | 18 Inches |
| Surround sound channel configuration | 5.1, 7.1 |
| Unit count | 1.0 Count |
| Wireless communication technologies | No Wireless Communication Technology |

## Product Details

- **Audio output mode:** Stereo
- **Brand:** Dayton Audio
- **Connectivity technology:** Wired
- **Frequency response:** 22
- **Speaker maximum output power:** 400 Watts

## Images

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by C***N on 26 December 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.!!!!

### ⭐⭐⭐⭐⭐ Review
*by C***S on 6 September 2025*

Great sounding woofer. I went with the Parts Express recommend sealed enclosure and paired it with the Dayton SPA500 amplifier. One of the keys to this woofer in my opinion is to let it break in properly. It was a little weak the first few of days of play but it definitely woke up after the break in period! Definitely a good value if are into building your own speakers.

### ⭐⭐⭐⭐⭐ Review
*by R***T on 11 January 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 Australia*
*Store origin: AU*
*Last updated: 2026-01-22*