Kube 12 MIE vs Kube 15 MIE
The Kube 15 MIE's sensitivity is 116 dB against the Kube 12 MIE's 114 dB and its low-frequency extension 20 Hz against 22 Hz. Both share power @ 8ω (300W) and high-frequency extension (140 Hz).
AI-generated product photo — not official manufacturer imagery.
LoudspeakersSubwoofersPowered Loudspeakers
Estimated price (community-sourced)
$1,100
Around — community and catalog average, updates slowly
About the Kube 12 MIE
The KEF Kube 12 MIE is a high-performance sealed active subwoofer featuring a 12-inch (300mm) front-firing long-throw driver powered by a 300W RMS Class D amplifier. Optimized by KEF's proprietary Music Integrity Engine (MIE) DSP algorithms, including iBX Intelligent Bass Extension, it delivers exceptional depth, dynamics, and accuracy for music, movies, TV, and gaming in larger rooms and home theaters. It includes three room placement settings (free standing, wall/in-cabinet, corner), KEF SmartConnect for automatic input detection, variable low-pass crossover (40-140 Hz), phase switch (0°/180°), and versatile connectivity options. The sealed cabinet design ensures precise bass and allows cabinet installation.
Specifications
Transducer Specifications
Driver and acoustic performance characteristics
- Sensitivity
- 114 dB SPL @ 1W/1m
- Frequency Response
- 22 Hz - 140 Hz
- Power Handling
- 300W
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 300W @ 8Ω
- Amplifier Class
- D
Speaker Design
Driver configuration and enclosure design
- Driver Size
- 12"
- Driver Count
- 1
- Enclosure Type
- sealed
- Crossover Frequency
- 140 Hz
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- No
- Ethernet
- No
- Analog Inputs
- Stereo RCA, Speaker-level
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 410 × 393 × 410 mm (W × H × D)
- Weight
- 18.6 kg (41 lbs)
Key Specifications
Sensitivity: 114 dB
Power: 300W
Frequency: 22-140 Hz
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions