The time has come for the R series for 2023, Kef speakers, to incorporate the latest technological development developed by the brand, namely the exclusive MAT process (for Metamaterial Absorption Technology, see below).
Kef R Series speakers, seven Hi-Fi/Home Cinema references
The R 2023 series has seven references, the three column loudspeakers Kef R11 Meta, Kef R7 Meta and Kef R5 Meta, the Kef R3 Meta bookshelf loudspeaker, the two central Kef R6 Meta and Kef R2 Meta and the effects Pitch Kef R8 Meta.
They all feature the same 12th generation Uni-Q driver (tweeter and coaxial midrange) boosted with MAT technology for a consistent sound signature. The latter is associated with one or two 130 mm boomers (on the R2 Meta, R5 Meta) and up to four 165 mm boomers (on the R3 Meta, R6 Meta, R7 Meta and R11 Meta). The latter is very similar to the one that fitted the previous range of Kef Series R loudspeakers. benefit from a closed, bass-reflex load for the other references.
Kef R Series speakers, zoom on Meta technology
As a reminder, the exclusive MAT process (for Metamaterial Absorption Technology) materializes in the form of a complex labyrinthine structure in relief where the channels act as an acoustic black hole absorbing 99% of the unwanted sounds radiating at the back of the top Uni-Q coaxial speaker, up from 60% previously. Thus, the distortion is virtually eliminated (THD at 0.07%) and the transparency increased. It should be noted that the MAT speaker also provides a better frequency response (+40%). Finally, it delivers perfectly and consistently smooth highs that are clear and precise at any volume.
Kef R Series speakers, specifications next
Other developments within the Kef Series R loudspeakers include a new crossover design and shortening of the path of travel to further improve the sound, a flexible decoupling chassis to annihilate unwanted vibrations. Namely, the foot Kef S
for the R3 Meta speaker is available as an option.
Available from March in three finishes, lacquered black, lacquered white and real walnut. Indicative prices (per unit):
• €3,250 for the Kef R11 Meta
• €2,500 for the Kef R7 Meta
• €1,750 for the Kef R5 Meta
• €1,100 for the Kef R3 Meta
• €1,600 for the Kef R6 Meta
• €1,400 for the Kef R2 Meta
• €800 for the Kef R8 Meta
Two references benefit from a special finish, titanium for the Kef R7 Meta (see third photo above) and indigo gloss for the Kef R3 Meta (see photo below).
Reminder of the key characteristics of the Kef R11 Meta loudspeaker:
• Type: 3-way loudspeaker
• Boomers: 16.5 cm x 4 aluminum cone
• Midrange: aluminum cone 12.5 cm
• Tweeter: aluminum cone with 25 mm MAT technology
• Charging: bass-reflex
• Non-magnetic: yes
• Sensitivity: 90 dB
• Impedance: 4 ohms
• Bandwidth: 30 Hz-50 KHz
• Cabinet dimensions (W x D x H, mm): 311 x 384 x 1,296 (with base)
• Frequency cut-off: 330 Hz/2.5 kHz
• Unit net weight: 36.5 kg (each)
Reminder of the key characteristics of the Kef R7 Meta loudspeaker:
• Type: 3-way loudspeaker
• Boomer(s): 16.5 cm x 4 aluminum cone
• Medium : 12.5 cm aluminum cone
• Tweeter: 25 mm aluminum cone with MAT technology
• Load: bass-reflex
• Non-magnetic: yes
• Sensitivity: 88 dB
• Impedance: 4 ohms
• Bandwidth: 32 Hz-50 KHz
• Cabinet dimensions (W x D x H, mm): 311 x 384 x 1,109 (with base)
• Cut-off frequency: 400 Hz/2.4 kHz• Unit net weight: 29.3 kg (each)
Reminder of the key characteristics of the Kef R5 Meta loudspeaker:
• Type: 3-way loudspeaker
• Woofers: 13 cm x 2 aluminum cone
• Midrange: 12 cm aluminum cone, 5 cm
• Tweeter: aluminum cone with 25 mm MAT technology
• Load: bass-reflex
• Non-magnetic: yes
• Sensitivity: 87 dB
• Impedance: 4 ohms
• Bandwidth: 38 Hz-50 KHz
• Cabinet dimensions (W x D x H, mm): 344 x 272 x 1,072 (with base)
• Crossover frequency : 400 Hz/2.7 kHz
• Unit net weight: 24.5 kg (each)
Reminder of the key characteristics of the Kef R2 Meta loudspeaker:
• Type: 3-way loudspeaker
• Woofers: 13 cm x 2 aluminum cone
• Midrange: 12 cm aluminum cone, 5 cm
• Tweeter: aluminum cone with 25 mm MAT technology
• Load: close
• Non-magnetic: yes
• Sensitivity: 87 dB
• Impedance: 4 ohms
• Bandwidth: 58 Hz-50 KHz
• Cabinet dimensions (W x D x H, mm): 550 x 309 x 175
• Cut-off frequency: 560 Hz/2.5 kHz
• Unit net weight: 15.4 kg (each)
Reminder of the key characteristics of the Kef R6 Meta loudspeaker:
• Type: 3-way loudspeaker
• Boomers: 16.5 cm x 2 aluminum cone
• Midrange: aluminum cone 12.5 cm
• Tweeter: aluminum cone with 25 mm MAT technology
• Load: close
• Non-magnetic: yes
• Sensitivity: 88 dB
• Impedance: 4 ohms
• Bandwidth: 55 Hz-50 KHz
• Cabinet dimensions (W x D x H, mm): 625 x 339 x 200
• Cut-off frequency: 500 Hz/2 .4 kHz
• Unit net weight: 17.8 kg (each)
Reminder of the key characteristics of the Kef R3 Meta loudspeaker:
• Type: 3-way loudspeaker
• Boomer: 16.5 cm aluminum cone
• Midrange: 12 cm aluminum cone, 5 cm
• Tweeter: aluminum cone with 25 mm MAT technology
• Load: bass-reflex
• Non-magnetic: yes
• Sensitivity: 87 dB
• Impedance: 4 ohms
• Bandwidth: 38 Hz-50 KHz
• Cabinet dimensions (W x D x H, mm): 344 x 272 x 1,072 (with base)
• Crossover frequency : 420 Hz/2.3 kHz
• Unit net weight: 12.4 kg (each)
Reminder of the key characteristics of the Kef R8 Meta speaker:
• Type: 2-way speaker
• Midrange: 12.5 cm aluminum cone
• Tweeter: aluminum cone with technology MAT 25 mm
• Load: close
• Non-magnetic: yes
• Sensitivity: 85 dB
• Impedance: 4 ohms
• Bandwidth: 88 Hz-19, 5 KHz
• Cabinet dimensions (W x D x H, mm): 175 x 259 x 174
• Cut-off frequency: 2.6 kHz
• Net unit weight: 4.5 kg (unit)
