KEF Kube 15 MIE Subwoofer

🧾 Overview

The KEF Kube 15 MIE is a powerful sealed active subwoofer built to deliver deep, controlled bass for music, movies, TV and gaming in larger rooms. A 380 mm long-throw driver is driven by a 300 W RMS Class D amplifier, while KEF’s Music Integrity Engine (MIE) DSP helps keep bass clean, tight and consistent at different listening levels. If you want weight and impact without “boomy” overhang, this is the flagship of the Kube MIE range.

✅ Key Features

✅ 15-inch (380 mm) front-firing long-throw driver for high output and deep extension

✅ Sealed enclosure for fast, controlled bass and placement flexibility

✅ 300 W RMS Class D amplification for strong dynamics and clean headroom

✅ Music Integrity Engine® (MIE) DSP with iBX Intelligent Bass Extension for deeper, more precise bass

✅ 3 room position EQ presets for consistent performance depending on placement

✅ Multiple power modes: Auto wake, Always On, and 12 V trigger for system integration

✅ Versatile connectivity: RCA line-level, speaker-level inputs, and KW1 expansion port for optional wireless

📦 What’s in the Box

📦 Kube 15 MIE subwoofer

🔌 Power cord

🔩 Euroblock speaker level connector

📖 User manual and warranty information

🔄 Compatibility

Works with AV receivers, stereo amplifiers, DAC/preamps and home cinema processors via RCA line-level input, and can also connect via speaker-level inputs when line-level outputs are unavailable. For wireless placement, the expansion port supports the optional KEF KW1 wireless kit (sold separately). Ideal for large rooms and dedicated home theatres where you want sealed-sub control with serious output.

📦✈️ Shipping & Returns

📦 Insured worldwide delivery

🔄 14-day return policy

🛡️ 2-year EU warranty

📝 Reviews

“Deep, hard-hitting bass from a potent 15" woofer.” — Crutchfield
“The addition of the subwoofer provided more girth and warmth… the lower end was well defined.” — CE Pro
“Characteristic tight sound of a sealed subwoofer.” — Frieve Audio Review

⚠️ Warning

⚠️ Warning: The Kube 15 MIE may cause sudden “bass responsibility” — you’ll start rewatching films for LFE details, measuring room corners, and explaining to guests why the sofa is now in the “optimal pressure zone.”