KEF Reference 4C Meta Centre Speakers (Unit)

KEF Reference 4C

The KEF Reference 4C Meta Centre Speakers offer an impressive audio experience with their three-way bass reflex design, featuring a Uni-Q driver array with 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. Boasting a broad frequency range from 33Hz to 45kHz and a frequency response of 48Hz to 35kHz, these speakers deliver rich and accurate sound reproduction. The precise crossover frequencies at 350Hz and 2.8kHz ensure seamless integration of the different drivers. With a maximum output of 116dB and a sensitivity of 90dB, these speakers can handle dynamic audio playback with clarity. The amplifier-friendly design supports power in the range of 50-400W, making them versatile for various audio setups. The speakers maintain low harmonic distortion (<0.5% at 40Hz-100kHz, <0.2% at 200Hz–10kHz) for faithful sound reproduction. With an impedance of 8 Ohms (minimum 3.2 Ohms), the KEF Reference 4C Meta Center Speakers provide stability and compatibility with a range of amplifiers.

Key Features

1. Driver Configuration: The KEF Reference 4C Meta Centre Speakers feature a sophisticated three-way bass reflex design with a Uni-Q driver array. This array includes 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, providing a comprehensive and balanced audio spectrum.

2. Frequency Range and Response: The speakers offer an extensive frequency range, with a typical in-room bass response reaching down to 33Hz (-6dB). In free field conditions, the short port delivers a range of 43Hz-45kHz (-6dB), while the long port covers 40Hz-45kHz (-6dB). The overall frequency response is 48Hz-35kHz (±3dB), ensuring a detailed and nuanced audio reproduction.

3. Crossover and Amplification: Precise crossover frequencies at 350Hz and 2.8kHz facilitate seamless integration between the HF, MF, and LF drivers. The speakers are amplifier-friendly, supporting a power range of 50-400W, making them versatile and compatible with various audio setups.

4. Maximum Output and Sensitivity: With a maximum output of 116dB (peak sound pressure level at 1m with pink noise) and a sensitivity of 90dB (2.83V/1m), these speakers deliver powerful and clear audio playback, capturing both delicate nuances and dynamic intensity.

5. Harmonic Distortion and Impedance: The speakers maintain low harmonic distortion, with 2nd & 3rd harmonics measuring <0.5% at 40Hz-100kHz and <0.2% at 200Hz–10kHz. The impedance rating is 8 Ohms (min 3.2 Ohms), ensuring stability and compatibility with a wide range of amplifiers.

Specifications