KEF Kube 8 MIE Subwoofer
- 8 in front-firing long-throw driver
- 300W Class D RMS amplifier
- iBX bass extension, Music Integrity Engine
- SmartConnect and speaker-level inputs
- 3 room position EQ presets
- 2-year warranty
Last refreshed Jun 20, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A compact, well-controlled subwoofer for smaller rooms with flexible inputs and placement EQ. Frequency response is not listed.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B0CX2V4FKRModel: Kube 8 MIECategory: Subwoofers
Sizes Available
Need a different one? Pick on Amazon →
Overview
A front-firing long-throw driver powered by a Class D amplifier moves the bass in this compact KEF subwoofer, with KEF's digital processing extending depth at any listening level. Room position presets tune it to where it is placed.
KEF uses the same amplifier as its larger Kube models in this compact cabinet, aimed at smaller rooms that need controlled bass. Frequency response and crossover details are not listed, and its size suits smaller rooms rather than large theaters.
Who it's for
Apartment and small living room setups wanting tighter, deeper bass under a TV or stereo get a compact upgrade. Large home theaters should look at a bigger subwoofer.
Pros and cons
- Strong Class D amplifier
- Bass extension processing
- Speaker-level and SmartConnect inputs
- Placement EQ presets
- Frequency response not listed
- Sized for smaller rooms
- Heavy for its size
Performance notes
Bass depth comes from the long-throw driver's high excursion and large cone area, with iBX and the Music Integrity Engine dynamically extending the low end. The Class D amplifier runs efficiently and cool, and EQ presets adjust for room placement.
Specifications
| Brand | KEF |
|---|---|
| Model | Kube 8 MIE |
| Dimensions & fit | |
| Audio Driver Size | 8 inches |
| Item weight | 9.4 kg |
| Item Dimensions D x W x H | 12.2 x 11.5 x 11.5 inches |
| Capacity & performance | |
| Speaker Maximum Output Power | 300 watts RMS, Class D |
| Construction & materials | |
| Enclosure Material | Metal, plastic |
| Color | Black |
| Compatibility & installation | |
| Subwoofer Connectivity Technology | Wired |
| Connectivity Protocol | KEF SmartConnect, RCA, speaker level inputs |
| Mounting Type | Floor standing |
| Warranty & support | |
| Warranty Description | 2 year manufacturer |
| Other details | |
| Audio Driver Type | Front-firing long-throw dynamic driver |
| Additional Features | iBX Intelligent Bass Extension, Music Integrity Engine, 3 room position EQ presets |
Frequently asked questions
How big is the KEF Kube 8 MIE?
It measures 12.2 x 11.5 x 11.5 inches and weighs 9.4 kilograms.
How does the KEF Kube 8 MIE connect?
Through KEF SmartConnect, RCA or speaker level inputs.
What room size suits the KEF Kube 8 MIE?
KEF says its 8-inch driver makes it ideally suited for smaller rooms.