The UK's leading Integrator and Equipment
Installer for the Digital Cinema Industry


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Being part of KELONIK GROUP, KCS division has a wide professional expertise in cinema sound systems, backed by fifteen years of experience and a large customer base worldwide. We are globally represented by our international KCS Distributor Network in the five continents.

Through continuous research and new product development for years, KCS has fulfilled customer demands in terms of optimised features, high performances, variety of models for any market needs, and efficient service.

With the advent of the new 3D digital projection formats, audio systems in movie theatres need to evolve so that the audience can be immersed in the sound field and enjoy a true 3D sound experience.

KCS is highly implicated in the development of such sound systems aimed for Dolby Atmos, Auro 11.1 or similar.


Surround Channel cinema sound system special for Outstanding sound installations and high dynamics with passive biamplification operation

K.C.S. SR-20 speaker system for passive biamplified surround channel sound is especially designed for large and spectacular installations. SR-20 system’s cabinet has one high performance and high power dynamics 15” Ø woofer. For the high frequencies, it uses a compression driver with 2” Ø titanium membrane. Its constant dispersion horn (100º x 60º) with 1” Ø mouth covers a wide area, providing all listeners a large response and a good sound distribution, both in the low frequencies and in the mid and high frequencies. Acoustic system specially designed for high dynamic surround systems suitable for spectacular systems such as Dolby Atmos, Auro 3D or similar.

SR-20 system has a built-in special passive crossover with separate bass and treble inputs, which can operate in two ways:
(1) Conventional passive amplification, with both inputs connected in parallel;
and (2) Passive biamplification, with bass and treble connected separately.

SR-20 has a switch to obtain two different response curves for the installations offering the following possibilities:
1) (ISO 2969) Response to ISO 2969 cinema surround roll-off curve.
2) (Flat) Flat response for improved high frequencies.


  • Cabinet SR-20.
  • Low Frequency Driver SR-15 P.
  • Passive Crossover F-SR-20.
  • High Frequency Driver S-401.
  • High Frequency Horn BC-96.

Specifications :

  • Frequency Range (-10 dB): 40 Hz- 18 kHz.
  • Nominal Impedance: 8 Ωhms.
  • Power Capacity Continuous Pink Noise: 400W.
  • Continuous Program: 800W.
  • Sensitivity 1W/1m: 100 dB S.P.L.
  • Crossover Frequency: 2 kHz passive included.
  • Horizontal Beamwidth: 90º.
  • Vertical Beamwidth: 60º.
  • Dimensions (H x W x D): 50 x 53 x 27 cm.
  • Net Weight: 17 kg.

Download Datasheet

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