The KEF Reference 4C Meta Centre Speakers offer an immersive audio experience with their advanced three-way bass reflex design. Equipped with a sophisticated Uni-Q driver array, including a 25mm vented aluminum dome High-Frequency (HF) driver, a 125mm aluminum Mid-Frequency (MF) driver, and four 165mm aluminum cone Low-Frequency (LF) drivers, these speakers are built for dynamic and rich sound reproduction. With a wide frequency range from 33Hz to 45kHz and precise crossover frequencies at 350Hz and 2.8kHz, they provide clarity and seamless integration for exceptional audio performance. Their versatile design supports power in the range of 50-400W, ensuring compatibility with various audio setups while maintaining low harmonic distortion for faithful sound delivery.
Design | Three-way bass reflex |
---|---|
High-Frequency (HF) Driver | 25 mm (1 in.) aluminium dome with MAT |
Mid-Frequency (MF) Driver | 125 mm (5 in.) aluminium cone |
Bass Units (LF) | 4 x 165 mm (6.5 in.) aluminium cone |
Frequency Range (Free Field -6dB) | Short port: 43Hz – 45kHz; Long port: 40Hz – 45kHz |
Frequency Range (Typical In-Room Bass Response -6dB) | 33Hz |
Frequency Response (±3dB) | 48Hz – 35kHz |
Crossover Frequency | 450Hz, 2.1kHz |
Amplifier Requirements | 50-400W |
Sensitivity (2.83V/1m) | 88dB |
Harmonic Distortion 2nd & 3rd Harmonics (90dB, 1m) | <0.5% 40Hz – 100kHz, <0.2% 200Hz – 2kHz, <0.1% 2kHz – 20kHz |
Maximum Output (Peak SPL at 1m with Pink Noise) | 116dB |
Impedance | 4 Ohms (minimum 3.2 Ohms) |