CTS General 2

Question 1

A loudspeaker is rated at 95 dB SPL (1W/1m). How much additional power is required to increase the SPL by 6 dB at the same distance?

Accepted Answer

4 watts

Answer

Every doubling of amplifier power increases SPL by 3 dB. To gain 6 dB, you must double power twice: 1W → 2W (+3 dB) → 4W (+6 dB). Therefore 4 watts total are required.

Question 2

Which AVIXA document defines minimum performance standards for projected image size and viewing distances in AV systems?

Accepted Answer

AVIXA F501.01:2015 (DISCAS)

Answer

AVIXA F501.01:2015 is the DISCAS (Display Image Size for 2D Content in Audiovisual Systems) standard, which establishes minimum and maximum image sizes and viewing distances for projected and direct-view displays.

Question 3

What is the primary function of a distribution amplifier (DA) in an AV signal chain?

Accepted Answer

To split and buffer one input signal to multiple outputs without impedance mismatch or signal degradation

Answer

A distribution amplifier takes a single source signal, buffers it (to prevent impedance loading), and distributes it to multiple destination devices with consistent signal levels and impedance matching.

Question 4

In AV system design, what does 'gain structure' refer to?

Accepted Answer

The systematic setting of input and output levels throughout an audio signal chain to maximize SNR and headroom

Answer

Gain structure is the process of optimizing signal levels at each stage of an audio system — from source to processor to amplifier to loudspeaker — to maximize signal-to-noise ratio while maintaining adequate headroom to prevent clipping.

Question 5

Which cable type is MOST appropriate for carrying unbalanced composite video signals over short runs in an AV installation?

Accepted Answer

RG-6 coaxial cable

Answer

Composite video is an unbalanced 75-ohm signal. RG-6 (or RG-59) coaxial cable is designed for 75-ohm unbalanced video at the correct impedance, minimizing reflections and attenuation.

(CTS) Certified Technology Specialist Practice Test

(CTS) Certified Technology Specialist Practice Test

CTS General 2