User's Manual K&F PASSIOKLING & FREITAG GMBH © 2017 Version 3.0 Page 7 of 263. Safety Instructions3.1 Mounting the Speakers / Wall and Ceiling InstallationWarningSuspended loads pose a safety risk.Only qualified technicians are permitted to perform the installation steps. Be sure to usepersonal protective equipment at all times.The technicians installing the speaker on site are responsible for and guarantee safe setupand use.Never use signal cables or power cords for suspending, aligning, or securing the systems.Before installing, check the stability, strength, and materials of walls, ceilings, and boarding.For example, use suitable rawlplugs for wall panels and make sure the strength is sufficient.Note that the suspension points on the hall ceiling (i.e. shackles, attachment points, orchain hoists) must comply with the DGUV regulations 17 and 18 or similar locally applicableaccident-control standards. The maximum load must have been certified by an authorizedexpert.Be sure to tighten all bolts and screws to the specified torque.Unless otherwise stated, use only KLING & FREITAG original parts for mounting the speakers.Never use other parts (in particular, parts not made by KLING & FREITAG).Make sure all fittings used are suitable for the task at hand and meet all relevant safetyrequirements.Ensure that all connections are secured against coming loose and that only authorized,statically tested and correctly sized supports, mounting equipment, wire ropes and chains areused.Be sure to always visually inspect all safety-related speaker and accessory componentsbefore use. If there are signs of wear, cracks, or deformation, etc., replace the affected partsimmediately. Visual inspection also includes checking all screwed connections of supportingcomponents.The information described here does not relieve the user of the duty to follow the givensafety requirements and legal regulations.3.2 Notes for Mounting the SpeakersWarningMount the speakers securely. To avoid injury or damage, always be sure to mount thespeakers securely so that they do not fall.Please note that speakers can move as a result of vibrations. To prevent them from fallingfrom their mounted position, they must be secured properly.Run the cables in a way that nobody can trip over them.3.3 Preventing Hearing DamageCautionKeep your distance from operating speakers. This equipment is capable of delivering soundpressure levels in excess of 90 dB SPL, which may cause permanent hearing damage.3.4 Protecting the Speakers / Operating Safety