KEF Reference 1 Meta Bookshelf Speakers (Pair)

KEF Reference 1

The KEF Reference 1 Meta Bookshelf Speakers offer a high-end audio experience with a three-way bass reflex design. With a meticulous design, they feature a 25mm aluminum dome tweeter with MAT (Metamaterial Absorption Technology) for improved clarity. The midrange is handled by a 125mm aluminum cone, while the bass is delivered through a 165mm aluminum cone, providing a wide frequency range from 45Hz to 35kHz. The short and long port options extend the versatility of these speakers, catering to different room setups. The speakers exhibit a crossover frequency of 450Hz and 2.1kHz, contributing to a seamless integration of frequencies. With an amplifier requirement of 50-200W, sensitivity at 85dB, and a peak sound pressure level of 111dB, these speakers deliver powerful and nuanced audio. While their harmonic distortion remains minimal across the frequency range, the sleek design and advanced technologies make the KEF Reference 1 Meta Bookshelf Speakers an excellent choice for audiophiles seeking uncompromised sound quality.

 Key Features

1. Driver Material:
   • The HF (High-Frequency) driver features a 25mm aluminum dome with MAT (Metamaterial Absorption Technology).
   • The MF (Mid-Frequency) driver is a 125mm aluminum cone.
   • The LF (Low-Frequency) driver is a robust 165mm aluminum cone.
2. SPL Levels (Sensitivity):
   • The sensitivity at 2.83V/1m is rated at 85dB, indicating the speakers’ efficiency in converting power to sound.
3. Impedance Rating:
   • The speakers have an impedance of 4 ohms, with a minimum of 3.2 ohms, ensuring compatibility with a range of amplifiers.
4. Speaker Type:
   • The KEF Reference 1 Meta Bookshelf Speakers feature a three-way bass reflex design, combining advanced technologies for optimal audio performance.
5. Ported Design:
   • The speakers offer flexibility with short and long port options, providing frequency range variations to suit different room setups.
6. Dimensions and Weight:
   • The speakers have a sleek design with dimensions of 440 x 205 x 422 mm, weighing 18.2 kg, making them suitable for bookshelf placement.
7. Frequency Range:
   • The free field frequency range (-6dB) spans from 40Hz to 45kHz, showcasing the speakers’ capability to reproduce a wide range of frequencies.
8. In-Room Bass Response:
   • The typical in-room bass response reaches as low as 30Hz (-6dB), ensuring a rich and deep low-frequency performance.
9. Crossover Frequency:
   • The speakers utilize a crossover frequency of 450Hz for the LF driver and 2.1kHz for optimal integration of the three drive units.
10. Amplifier Requirements:
    • These speakers require an amplifier with a power output ranging from 50W to 200W, providing flexibility for various audio setups.
11. Maximum Output:
    • With a maximum output of 111dB (peak sound pressure level at 1m with pink noise), the speakers deliver a powerful and dynamic listening experience.
12. Harmonic Distortion:
    • Harmonic distortion is maintained at minimal levels, with values below 0.5% from 40Hz to 100kHz, ensuring accurate and clear reproduction of audio signals across the frequency spectrum.