The HK Audio SI SERIES, which has been specifically tailored to meet the needs of today’s installation market is known for its technical features and detailed solutions is being expanded with CM-X to include three high-quality ceiling speakers with customisable appearance, simple installation and operation as well as uncompromising sound quality. Wherever music and speech need to be more than just in the background SI SERIES CM-X (“Ceiling Mounted”) is the ideal tool: In cafés, restaurants and bars, event catering, hotels, conference environments, retail or community and club centres the CM-X fit into the project as part of a high-quality system solution. The front of the speakers features the coaxial two-way speaker arrangement.The CM-X speakers are equipped with 4” (CM-4), 6.5? (CM-6) and 8? (CM-8) polypropylene woofers/midrange transducers and 0.75? (CM-4) and 1? (CM-6, CM-8) aluminium dome tweeters in line with their product designation. The power selector switch on the front for switching between low-Z (8 Ohm) or high-Z (100/70 V) and the respective power taps of the integrated transformer can be operated without tools, even during operation, thanks to the magnetically attached front grille. A black and white front grille are included in the scope of delivery. The enclosure of the speakers with high-quality steel back can is very rigid and low-resonance thanks to its special shape and reinforcements. As a result, there are no disadvantages in terms of sound, such as those associated with inexpensive ceiling speakers in the form of rattling noises or resonances. All plastics used for the SI SERIES CM-X are manufactured with special flame retardant additives so that the relevant international safety standards are met as standard.