KEF R11 Floorstanding Speakers (Pair)

KEF R11 

The KEF R11 Floorstanding Speakers stand out as powerful audio companions, featuring a three-way bass reflex design that combines elegance with cutting-edge technology. The Uni-Q Driver Array incorporates a vented aluminum dome tweeter and a 5-inch aluminum cone midrange driver, ensuring detailed and accurate sound reproduction. The bass is handled by four hybrid aluminum drivers measuring 6.5 inches each. With crossover frequencies set at 400Hz and 2.9kHz, these speakers deliver a frequency range extending from 30Hz to an impressive 50kHz (-6dB). The R11s exhibit a typical in-room bass response down to 26Hz (-6dB), providing a deep and immersive low-frequency experience. With dimensions of 1295.5 x 310.6 x 383.5 mm and a weight of 37.7 kg, these speakers make a bold visual statement. Harmonic distortion is kept minimal (<0.3%) across the frequency range, even at high volumes (90dB, 1m). These speakers boast a nominal impedance of 8 Ohms (min.3.2 Ohms), a sensitivity of 90dB (2.83V/1m), and a maximum output of 113dB, making them suitable for amplifiers ranging from 15 to 300W. The KEF R11s are a testament to audio engineering excellence, delivering a premium listening experience with a wide soundstage and impressive clarity.

Key Features

1. Driver Material: The KEF R11 Floorstanding Speakers feature a Uni-Q Driver Array with a 25mm (1in.) vented aluminum dome for the high frequencies (HF), a 125mm (5in.) aluminum cone for the midrange frequencies (MF), and four 165mm (6.5in.) hybrid aluminum cones for the low frequencies (LF).

2. SPL Levels: These speakers offer a maximum output of 113dB, providing a dynamic and powerful sound experience, and a sensitivity of 90dB (2.83V/1m) for efficient performance.

3. Impedance Rating: With a nominal impedance of 8 Ohms (min.3.2 Ohms), the KEF R11s are compatible with a wide range of amplifiers, providing flexibility for audio setups.

4. Speaker Type: Designed as a three-way bass reflex system, the speakers combine elegance with advanced technology, ensuring a balanced and impactful audio output.

5. Dimensions and Weight: The speakers have dimensions of 1295.5 x 310.6 x 383.5 mm, making a bold visual statement, and weigh 37.7 kg (83.1 lbs.), ensuring stability.

6. Crossover Frequencies: Precise sound separation is achieved with crossover frequencies set at 400Hz and 2.9kHz, allowing each driver to handle specific frequency ranges for optimal performance.

7. Frequency Range: The speakers deliver an impressive frequency range from 30Hz to 50kHz (-6dB), capturing the full spectrum of audio frequencies for a detailed listening experience.

8. In-Room Bass Response: Achieving a typical in-room bass response down to 26Hz (-6dB), these speakers offer deep and immersive low-frequency reproduction.

9. Frequency Response: The frequency response ranges from 46Hz to 28kHz (±3dB), ensuring a well-balanced sound signature across different audio genres.

10. Harmonic Distortion and Amplifier Power: With harmonic distortion kept below 0.3% from 120Hz to 20kHz (90dB, 1m), and a recommended amplifier power of 15-300W, these speakers provide distortion-free audio with the capability to handle varying power inputs.

Specifications