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Test your basic knowledge |
Speakers Amplifiers Monitors And Transducers
Start Test
Study First
Subject
:
engineering
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. RMS; Continuous; Program (Music)
Power Ratings
Cone Materials
Polarity
Protect Light
2. Represents how much in pink noise level that a speaker can hold on average
RMS
Cone Loudspeaker Parts
Compression Driver
Cone Materials
3. Holds cone loudspeaker components together; Serves as a support skeleton
Amp Stereo Mode
Basket
Class D Amp
Series/Parallel Wiring
4. Converts from acoustic energy to electrical energy
Input Transducer
Output Transducer
Electromagnetic Speaker
Power Ratings
5. W-Channel Amp is converted to a 1-Channel Amp (1 IN / 1 OUT); Must use both positive connections on PA ouputs because it reverses itself out of polarity
Electrostatic Speakers
Amp Bridge Mode
Polarity
Voice Coil
6. Type of speaker designed specifically to reproduce low frequencies; Subwoofers; Piston motor attached to large baffles; Size and cost are the major drawbacks
Electromechanical Speaker
Series/Parallel Wiring
Crossover Network
Loudspeaker
7. Parallel; Series; Series/Parallel (Power requirement always adds up)
3 Ways to Wire Speakers
Solid Light Clip
Class D Amp
RMS
8. A device that divides frequency bands and sends them to their respective drivers - or speakers
Loudspeaker
Crossover Network
Peak
Nominal Impedance
9. Two notes with frequencies related by a ratio of 2:1
+/-6 dB
Octaves
Gain
Crossover Network
10. Coil of copper or aluminum wire attached to the backside of the cone that vibrates at the frequency of the electrical signal; Frequency matches the frequency of the sound produced by the cone
Input Transducer
Compression Driver
Voice Coil
Cone Materials
11. Positives wired to negatives; Impedance added through simple addition; If single speaker fails the entire chain fails
Heat Sink
Series Wiring
Output Transducer
Class A Amp
12. Random noise that is at equal energy at all frequencies; - More energy at lower frequencies; Decreases in amplitude at 3 dB per octave
Power
Pink Noise
Basket
Transducer
13. A heat dissipation device - usually a passive metal object with a flat surface - attached to an amplifier
Electromagnetic Speaker
Voice Coil
Heat Sink
Woofer
14. Protects all inner working of the cone
Dust Cap
Amp Bridge Mode
Nominal Impedance
Phase Plug
15. Closest to perfectly reproducing sound; No cabinets required;
Phase
Octaves
Cone Loudspeaker Parts
Electrostatic Speakers
16. Output transducer used to output sound; Last piece in the sound reinforcement chain
Loudspeaker
Parallel Wiring
Cone Driver
Input Transducer
17. Most energy efficient;
Class D Amp
Magnet Assembly
Divided Speaker System
Parallel Wiring
18. Speaker system having 2 different sized transducers; Developed by Bell Labs in 1931; Had phasing issues due to frequency crossover but fixed this with circuit board that contained high & low pass filters
Output Transducer
Divided Speaker System
Amp Stereo Mode
Heat Sink
19. Paper; Polypropylene; Poly/Plastic; Kevlar; Aluminum
Cone Materials
Protect Light
Polarity
3 Ways to Wire Speakers
20. The total opposition that a device or transmission line will show to an AC or DC current at a specific frequency; Measured in Ohms (
Impedance
Series Wiring
Peak
Power
21. Operates just like a dynamic loudspeaker except it has no cone; Small diaphragm must be used with a flared horn; Usually made of titanium; Used for high frequencies; Classified by size of openings (1' & 2' standard today); High efficiency but low pow
Class A Amp
Woofer
Powering Speakers
Compression Driver
22. Suspension; Diaphragm; Dust Cap; Surround+Spider (Suspension); Cone/Baffle; Magnet Assembly; Voice Coil; Coil Form; Basket
Dust Cap
Crossover Network
Cone Loudspeaker Parts
3 Ways to Wire Speakers
23. Negative or positive pole of an electric current
Reconing
Polarity
Dust Cap
Phase
24. Tend to be used by consumer market; Represents how much a speaker can hold for a short hit or transient
Octaves
Gain
Powering Speakers
Peak
25. Cabinet is able to focus a majority of its sound down to around 200 - 300 hZ; Ability to focus sound and more volume due to horns natural amplification
Horn Loaded Cabinet
Impedance
Cone Loudspeaker Parts
Phase Plug
26. Frequency Response; Power (Program vs. Peak); Sensitivity; Impedance
Basket
Electrostatic Speakers
Speaker Specifications
Amp Bridge Mode
27. Preferred method that allows the user to power several loads at different times or at once; Ohms value for the set of speakers will be less than any one of the single speakers in the set; Impedance divides as speakers are added
Cone Loudspeaker Parts
Peak
Parallel Wiring
Transducer
28. 2 IN / 2 OUT
Class A Amp
Power
Cone Driver
Amp Stereo Mode
29. If on for any length of time it could signify damage to loudspeakers and/or amplifiers
Octaves
Cone Materials
Basket
Solid Light Clip
30. Most common type of speaker transducer; Use a combination of electricity from a power amplifier (or other device) and an already present magnetic field to move baffle; Very efficient (loud with little power input); BAD = Wide frequency range
Electromagnetic Speaker
Basket
Pink Noise
Input Transducer
31. Speaker driver designed to reproduce low frequencies
Parallel Wiring
Input Transducer
Woofer
Dust Cap
32. Bullet- like object in center of speaker driver; It prevents high frequencies from cross - cancelling each other
Electromechanical Speaker
Woofer
3 Ways to Wire Speakers
Phase Plug
33. Type of speaker designed specifically to reproduce high frequencies; Usually piezoelectric drivers (which are used in hearing aids and cell phones but not in audio world)
Protect Light
Tweeter
Electrostatic Speakers
Amp Matching
34. Amps get matched to speakers!!
Crossover Network
Peak
Amp Matching
Woofer
35. Sound wave guiding structure used to amplify and focus sound coming from compression driver; Sound dispersion is horizontal and vertical
Horn
Phase Plug
Phase
Output Transducer
36. Amp is OFF; Protection for the amplifier
Protect Light
Dust Cap
Amp Bridge Mode
Cone Driver
37. Surround + Spider; Help keep the speaker from unwanted movement (side to side) and help maintain control over the speaker's movement (fore and aft); Attached to the cone and basket assembly; Surround on outside & spider on inside
Amp Matching
Suspension System
Electrostatic Speakers
Front Loaded Cabinet
38. Most accurate and simplest design; One component kept 'hot' with 100% available energy at all times; Makes a lot of heat b/c energy is drawn through it's power cable; Very clean sound with low distortion rates
Class A Amp
3 Ways to Wire Speakers
Magnet Assembly
Polarity
39. Converts from electrical energy to acoustic energy which one perceives as sound
+/-6 dB
Series/Parallel Wiring
Output Transducer
Amp Bridge Mode
40. Doubling of the voltage or pressure will always give a 6 dB gain; Halving of the pressure or voltage will always give a 6 dB loss; Sound INTENSITY drops 6 dB with each doubling of the distance (Inverse Square Law)
Impedance
+/-6 dB
Basket
Phase Plug
41. Optimum speaker powering should be somewhere between Program and Peak power
Powering Speakers
Voice Coil
Amp Matching
Heat Sink
42. Repair process for speaker failure where loudspeaker is completely torn down and rebuilt from scratch
Reconing
Cone Driver
Solid Light Clip
Magnet Assembly
43. Magnitude of transfer function
Gain
Speaker Specifications
Amp Stereo Mode
Polarity
44. The amount of energy measured over time measured in Watts (W)
Cone Materials
Power
Cone/Baffle
Class A Amp
45. Works best at low frequencies (below 5 kHz); Moving parts are serviceable; All energy at center of speaker; Normally described by their diameter (10' - 12' - 15' - 18'); Largest model is 32'; Smaller cone = better high frequency response
Cone Driver
Impedance
Pink Noise
Power
46. Cone drivers mounted up front; No pattern control; High drivers always in horns because they are easy to control
Parallel Wiring
Series/Parallel Wiring
Front Loaded Cabinet
Cone Loudspeaker Parts
47. Combination of 2 wiring techniques; Divide set of speakers into groups (wired in series) and wire the groups in parallel; Used typically for car audio
Series/Parallel Wiring
Power
Electromagnetic Speaker
Heat Sink
48. Electrical device that converts one form of energy into another
Transducer
Tweeter
Class D Amp
Nominal Impedance
49. Made of ferrite or neodymium (stronger); Non - serviceable; Attached to the back of the speaker basket
+/-6 dB
Front Loaded Cabinet
Horn Loaded Cabinet
Magnet Assembly
50. Should be light (for quicker and more accurate voltage response) & ridged (to reduce flexing or bowing during speaker movement); Also pushes heat out by pulling cold air in
Loudspeaker
Electromechanical Speaker
Cone/Baffle
Horn Loaded Cabinet