Loudspeaker Products


The perfect loudspeaker series for elegant, architectural room integration and for mobile use. Sophisticatedly developed with all-round convincing sound characteristics, even in acoustically difficult environments.



Sound and design

Many loudspeakers can often not meet the demands of modern architecture. However, the models of the K&F SONA series are distinguished by their stylish and timeless design. The more classically styled design of the low frequency systems K&F SONA SUB and K&F SONA SUB II favours concealed integration or conscious use as a design element. All full-range speakers of the K&F SONA series are equipped with an intelligent assembling device. The integrated ball joint technology with mounting bracket enables a particularly simple and variable orientation of the speaker. Simple and elegant!

Inner values

While developing the K&F SONA 5, special attention was paid to perfect interaction of the components. Despite the most compact dimensions, this system already has an effective directivity in the high frequencies and astounding level stability. Both of these attributes prove to be particularly valuable for the musical sound, especially at medium listening distances. Therefore, they also play a central role in the K&F SONA 6 and K&F SONA 8. Highest standards of speech intelligibility, dynamics and natural sound reproduction are achieved by combining the latest high-tech components with the well-proven CD horns from the K&F CA series, which can also be rotated 90° in the K&F SONA 6 and K&F SONA 8 models. Why be happy with less?

Precision and dynamics

The products from the K&F SONA range combine the precision of high-value HiFi speakers with the dynamics of PA systems. The listener is then opened up to the indistinguishable sound philosophy of Kling & Freitag – the natural and neutral reproduction of sound at all volumes. The systems from the K&F SONA series are already impressive in combination with linear power amplifiers. The K&F SystemAmps are the ideal drive for the highest demands. The available K&F presets then ensure maximum operating reliability and an optimal sound experience. Simply perfect!

Product overview

SONA 5: 1 x 5″/1 x 1″ 120° x 90° (H x V)
SONA 6: 1 x 6.5″/1 x 1″ 90° x 60° (H x V)
SONA 8: 1 x 8″/1 x 1″ 85° x 55° (H x V)
SONA SUB: 1 x 8″ Omni
SONA SUB 2: 2 x 8″ Omni






  • Passive installation subwoofer 2 x 8″ 2 x 8 Ω (Stereo)/4 Ω (Mono)
  • Optimal bass complement for the K&F SONA Series
  • Top-design for integration in prestigious environments
  • Controlled by universal electronic frequency-separating filter (e. g. DSP) or K&F SystemAmps
  • Option XO works without a controller or crossover powered directly on a two channel amplifier with SONA full range speakers (high- and lowpass filter)


Bass reflex system
Operation with
K&F PLM+ Series, K&F D Series
Lab.gruppen IPD 2400
K&F SystemRack1, K&F TOPAS1
Frequency range without Filter
60 Hz – 450 Hz (-10 dB)
70 Hz – 400 Hz (±3 dB)
Lower cut-off frequency
32 Hz (-10 dB)
42 Hz (-3 dB)
Power handling nominal
300 watts
Power handling program
600 watts
Power handling peak
1,200 watts
Max. SPL
123 dB (SPL peak/1 m/half space)
2 x 8″ woofer with 50 mm voice coil
Impedance (nominal)
8 Ω (Stereo)/4 Ω (Mono)
4-pin Phoenix connector and speakON® NL4MPR (parallel)
12 mm multiplex enclosure, structured lacquer in black or white, two enclosure cabinets for possible stereo subwoofer application, perforated metal grille in the enclosure colour that can be mounted and removed without tools
Dimensions (W x H x D)
536 x 310 x 485 mm
16.9 kg
RAL 9005 (black)
RAL 9010 (white)
RAL Special Colour
'XO' (crossover with high- and lowpass filter)
1 Discontinued in October 2015