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

Founded over four decades ago, QSC Audio Products, LLC, is a globally recognized leader in the design and manufacture of professional audio system solutions. Sound Associates have been specifying and installing QSC amplifiers for use in cinemas large and small for many years – and the vast majority of those installations continue to deliver high quality cinema sound today.

QSC introduced a full range of cinema speakers and Sound Associates is proud to have carried out all of the UK installations of their stage, sub-bass and surround speakers. The range now includes digital signal processing (DSP) and, again, Sound Associates have carried out numerous installations, both here in the UK as well as overseas.

In 2016 QCS acquired Ultra-Stereo Labs, Inc. (USL) allowing them to offer an industry-leading porfolio of sound processing solutions for the motion picture exhibition industry.


The SB-218F enclosure features separate chambers for each transducer. In the rare event of a transducer failure, this prevents over-excursion of the remaining transducer caused by improper box loading. Both models feature 4 ohm impedance, which means that you can use a smaller amplifier to get maximum output from the loudspeaker.


  • High output performance with 800 W/1600 W continuous power rating
  • Eight built-in M10 mounting points for overhead suspension
  • 15 mm plywood construction for increased cabinet structural integrity
  • 4 ohm impedance for efficient amplifier power
  • Side mounted hand holds for easy handling during installation
  • Foam-lined perforated steel grille
  • Barrier Strip and Neutrik SpeakOn® connection
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