AVIXA Updated CTS Exam Questions and Answers by michal

To mount a projector so that it is horizontally centered with the suspended screen, the technician should look at the reflected ceiling drawings in the plans. Reflected ceiling plans provide a view from above, showing the layout and alignment of ceiling elements, including projectors, screens, lighting, and other fixtures. This perspective is essential for ensuring that the projector is correctly aligned with the screen. Axis Technology Specialist documentation highlights the use of reflected ceiling plans for precise alignment of AV equipment.

Subwoofers are generally not required for a PA system focused solely on speech reinforcement because they reproduce low-frequency sounds that are not necessary for intelligibility of spoken word. Speech reinforcement systems typically prioritize clarity in the mid and high frequencies.

CTS Technology Specialist Reference

The CTS curriculum states that speech reinforcement systems should prioritize mid and high frequencies, which are critical for voice clarity, while subwoofers are typically used in music reinforcement for low-frequency response.

Before swapping hardware or updating firmware, the first step in any troubleshooting scenario is to check physical connections. Loose or improperly seated cables are one of the most common causes of intermittent signal loss.

“Physical inspection is the first troubleshooting step, especially for signal loss. Cable reseating often resolves intermittent issues.”

— CTS Exam Guide, Troubleshooting Methodologies

The second pattern from the left (the figure-eight pattern).

The figure-eight (or bidirectional) microphone pattern is the most susceptible to feedback among the choices shown. This pattern picks up sound equally from both the front and rear of the microphone while rejecting sound from the sides. Due to its large rear lobe, it is prone to capturing sounds from reflective surfaces or rear-facing speakers, which can lead to feedback in a live sound environment.

Here's a breakdown of the patterns:

First pattern (Omnidirectional): Captures sound from all directions. While it can be prone to feedback, it doesn’t have a rear lobe like the figure-eight pattern.

Second pattern (Figure-eight/Bidirectional): Susceptible to feedback because it picks up equally from both front and back, which can include unwanted sound reflections.

Third and Fourth patterns (Cardioid and Supercardioid): These are more directional with better rear rejection, thus less susceptible to feedback.

Fifth pattern (Shotgun): Highly directional with minimal pickup from the rear and sides, making it the least susceptible to feedback.

CTS Technology Specialist Reference

CTS materials on microphone types and placement emphasize that bidirectional (figure-eight) microphones should be positioned carefully in live sound setups to avoid unwanted rear lobe pickup, which can lead to feedback when speakers are positioned behind or to the sides of the microphone.