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


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Ultra Stereo Labs was formed in 1982 and has manufactured Stereo Cinema processors, and other motion picture audio and test equipment. Sound Associates have worked with USL since 1990 and supply cinema audio processors and sound system monitors to our customers.

USL have always been at the forefront of equipment development and frequently release new innovative cinema solutions many months or years ahead of their competitors. Their links and relationships with the film distribution and exhibition industry allow them to develop new products and innovations for cinema installers and integrators.


The LSS-200 is designed for cinema auditorium quality control. It measures sound pressure level, luminance and chromaticity. The LSS-200 contains a color sensor, not an image sensor. The LSS-200 does not present a security issue, as there is no transmitting of an image or sound of the movie.


  • Measures C-weighted sound pressure level (SPL) in dB.
  • Measures luminance in cd/m² and fL (ft-L).
  • Measures chromaticity (x and 1).
  • These measurements are available via web interface and through TCP commands over Ethernet.
  • Measured data can be gathered at a network control point to verify the projected luminance, color chromaticity, and sound levels.
  • Measurements are used to identify lamps nearing end of life, misadjusted lamps, projector color problems, defective speakers or other audio components.
  • Powered by an included USB power supply or Power Over Ethernet (POE*)

*(User supplied power injector)

Download Datasheet

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