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Riddles
100

Stereo signals provide   ?   sound to the left and right channels. This is the most common form of sound reproduction.

  1. different 
  2. the same 

 

A. Different

100

What type of cable is recommended for speaker runs of approximately 100 feet (30 meters)?

  1. 12-gauge solid 
  2. 12-gauge high strand 
  3. 16-gauge solid 
  4. 16-gauge high strand

 

d. 16-gauge high strand 

100

When the power is doubled, the sound will increase by   ?  . 

  1. 3 dB 
  2. 6 dB 
  3. 9 dB 
  4. 12 dB 

 

  1. 3 dB
100

A   ?   is a physical space with speakers, and may have a separate volume control.

  1. control room 
  2. listening area 
  3. room 
  4. zone

 


b. listening area

100

What has three feet but cannot walk?

A yardstick

200

Which is a speaker specification used to identify a speaker’s performance?

  1. Frequency response 
  2. Impedance 
  3. Power handling 
  4. Root mean square 
  5. Sensitivity 
  6. All of the above 

F. All of the above

200

A-Bus is one of the few technologies that allow for the distribution of   ?   over eight-conductor twisted-pair cable. 

  1. audio 
  2. data 
  3. power 
  4. all of the above 

d. all of the above (100%)

200

What is the purpose of a magnet in a speaker? 

  1. Holds the speaker components together 
  2. Made of paper, plastic, or flexible metal, and able to vibrate to create sound waves 
  3. Provides permanent magnetism used to interact with the voice coil as electrical energy flows through it
  4. Vibrates the diaphragm to create sound waves

c. Provides permanent magnetism used to interact with the voice coil as electrical energy flows through it

200

What are the two main wireless technologies used in audio distribution? 

  1. Bluetooth and infrared 
  2. Satellite and microwave 
  3. Satellite and radio broadcast 
  4. Wi-Fi and Bluetooth 

d. Wi-Fi and Bluetooth 

200

What has 13 hearts but no other organs

A deck of cards

300

To increase volume by three decibels,   ?   the power/wattage. To decrease the volume by three decibels   ?   the power/wattage.

  1. double / halve 
  2. halve / double

 

  1. double / halve  
300

One should always follow the manufacturer’s documentation for the appropriate method of wiring speakers and control devices based on their components. 

  1. True 
  2. False 
  1. True
300

 ?   sound was the original form of audio playback using the audio generated from one point and distributed equally to multiple speakers in a zone. 

  1. Monaural 
  2. Stereo 
  3. Surround 
  4. All of the above 
  1. Monaural
300

A distributed audio system will always include which of the following? 

  1. Amplification and speakers 
  2. Audio source(s) and control devices 
  3. Distribution equipment 
  4. a., b., and c. 
  5. b. and c. 

d. a., b., and c.  

300

 What month of the year has 28 days in it?

All of them

400

An acoustically   ?   room is usually larger, has an open design with higher ceilings and reflective floors, and has no soft furniture or pillows . 

  1. dead 
  2. echoing 
  3. flat 
  4. live

d. live

400

A   ?   is the key to all audio systems; it is responsible for managing the operation of devices connected to it. 

  1. control electronic 
  2. receiver 
  3. system controller 
  4. volume control 

c. system controller

400

What is the most commonly used tool to measure sound?

  1. Ambient analyzer 
  2. Real-time analyzer 
  3. Sound pressure level meter 
  4. Spectrum analyzer 

 

  1. Sound pressure level meter
400

To increase or decrease the power at a constant voltage speaker, the installer can choose from different   ?  . 

  1. bridges 
  2. planes 
  3. sources 
  4. taps 

d. taps 

400

What building has the most stories?

Your age

500

What is the audible range of frequencies that humans hear? 

  1. 10 Hz to 20 Hz 
  2. 20 Hz to 20 kHz
  3. 100 Hz to 100 kHz 
  4. 20 kHz to 20 MHz 

b. 20 Hz to 20 kHz

500

Wireless speakers do not need wires for audio transmission, but they do require   ?  . 

  1. AC power 
  2. DC power 
  3. either a. or b. 
  4. none of the above 

c. either a. or b. (100%)

500

Which of the following is not an audio amplifier specification?

  1. Dynamic range 
  2. Load impedance
  3. Power rating 
  4. Root-mean-square error 
  5. Sound-to-noise ratio 
  6. Total harmonic distortion

 

d. Root-mean-square error

500

In a multi-source–multi-zone audio system, an audio source can be independently selected, allowing different music to be listened to in each zone. Source selection works through a   ?  .

  1. matrix 
  2. maze 
  3. monopoly 
  4. speaker selector 

 

  1. matrix
500

What starts with T, ends with T, and has T in it?

A teapot