AVIXA CTS-D: Loudspeakers Exam Study Guide with Complete Solutions

AVIXA CTS-D: Loudspeakers Exam Study Guide with Complete Solutions Distributed Loudspeaker System - Answer️️ -Employs multiple loudspeakers that are separated by some distance from each other. This is most commonly done by placing them in the ceiling above the audience area. loudspeaker polar pattern directivity - Answer️️ -how much area a selected loudspeakers will cover, typically in ballon plot format representing a specific frequency response Coverage is typically stated at the 6 dB down points with 5 degree markings Speech Reinforcement typical loudspeaker frequency rating - Answer️️ -2000 Hz (2 kHz) What two items do a loudspeaker polar chart indicate? - Answer️️ -1. The radiated energy of a loudspeaker at a given frequency in either the vertical or horizontal plane. Energy radiates outward - but not equally - in all directions from the loudspeaker, and polar plots are used to show the pattern of the energy. 2. The degree off-axis where the radiated energy decreases by 6 dB as compared to the on axis level. These locations are referred to as the, "6 dB down points." Most often, the coverage pattern in equipment specifications is typically stated at the 6 dB down points. ©SOPHIABENNETT EXAM SOLUTIONS_2024/2025 Monday, September 2, 2024 12:59 PM Page | 2 Loudspeaker Coverage Formula - Answer️️ -This is the formula for the diameter of the circle representing the coverage area of a loudspeaker: D = 2 * (H - h) * tan (C∠ / 2) Where: D is the diameter of the coverage area H is the ceiling height h is the height of the listeners' ears C∠ is the loudspeaker's angle of coverage in degrees. What are common arrangements for distributed ceiling systems - Answer️️ -1. Full overlap 2. Edge-to-Edge 3. Minimum Overlap Full overlap distributed ceiling system arrangement - Answer️️ -Will provide excellent coverage at most frequencies (1.4 dB variation). However, this is a costly approach, and will likely provide more coverage than required. This amount of