SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. Frequency Response; Power (Program vs. Peak); Sensitivity; Impedance
Peak
Series Wiring
Speaker Specifications
Output Transducer
2. Amps get matched to speakers!!
Powering Speakers
Amp Matching
Reconing
RMS
3. 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
Woofer
Parallel Wiring
Divided Speaker System
3 Ways to Wire Speakers
4. 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
Loudspeaker
Phase Plug
Class A Amp
Electromagnetic Speaker
5. Sound wave guiding structure used to amplify and focus sound coming from compression driver; Sound dispersion is horizontal and vertical
Electrostatic Speakers
Horn
Woofer
Cone Driver
6. Paper; Polypropylene; Poly/Plastic; Kevlar; Aluminum
Parallel Wiring
Divided Speaker System
Cone Loudspeaker Parts
Cone Materials
7. 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
Transducer
+/-6 dB
Dust Cap
Cone/Baffle
8. Bullet- like object in center of speaker driver; It prevents high frequencies from cross - cancelling each other
Phase Plug
Protect Light
Class A Amp
Woofer
9. Parallel; Series; Series/Parallel (Power requirement always adds up)
Power
Powering Speakers
3 Ways to Wire Speakers
Horn Loaded Cabinet
10. Converts from acoustic energy to electrical energy
Input Transducer
Cone Driver
Output Transducer
Power Ratings
11. Protects all inner working of the cone
Dust Cap
Power
Suspension System
Loudspeaker
12. Two notes with frequencies related by a ratio of 2:1
Octaves
Class D Amp
Gain
Polarity
13. 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
Impedance
Front Loaded Cabinet
Cone Driver
14. A heat dissipation device - usually a passive metal object with a flat surface - attached to an amplifier
Heat Sink
Parallel Wiring
Magnet Assembly
Series Wiring
15. Made of ferrite or neodymium (stronger); Non - serviceable; Attached to the back of the speaker basket
Nominal Impedance
Cone Loudspeaker Parts
Phase
Magnet Assembly
16. Cone drivers mounted up front; No pattern control; High drivers always in horns because they are easy to control
Front Loaded Cabinet
Class D Amp
Cone Materials
+/-6 dB
17. 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
Impedance
Input Transducer
Divided Speaker System
Compression Driver
18. The lowest amount of impedance the speaker will present to the amplifier
Class D Amp
Magnet Assembly
Nominal Impedance
Output Transducer
19. Represents how much in pink noise level that a speaker can hold on average
Loudspeaker
Series Wiring
Peak
RMS
20. Adjusting so as to be in a synchronized condition; Measurement of time
Divided Speaker System
Crossover Network
Cone/Baffle
Phase
21. If on for any length of time it could signify damage to loudspeakers and/or amplifiers
Series Wiring
Solid Light Clip
Heat Sink
Power Ratings
22. Negative or positive pole of an electric current
Peak
Tweeter
Polarity
Electromagnetic Speaker
23. Repair process for speaker failure where loudspeaker is completely torn down and rebuilt from scratch
Front Loaded Cabinet
Reconing
Tweeter
Speaker Specifications
24. Magnitude of transfer function
Dust Cap
Crossover Network
Class A Amp
Gain
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
Electrostatic Speakers
Horn Loaded Cabinet
Speaker Specifications
Cone Materials
26. Amp is OFF; Protection for the amplifier
Magnet Assembly
Horn
Protect Light
Gain
27. 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
Woofer
Phase Plug
Suspension System
Class A Amp
28. Tend to be used by consumer market; Represents how much a speaker can hold for a short hit or transient
Cone Loudspeaker Parts
Suspension System
Peak
Protect Light
29. 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
Peak
Cone Driver
Amp Stereo Mode
Octaves
30. Converts from electrical energy to acoustic energy which one perceives as sound
Reconing
Output Transducer
Amp Bridge Mode
Crossover Network
31. 2 IN / 2 OUT
Amp Stereo Mode
Phase Plug
Amp Matching
Heat Sink
32. 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
Crossover Network
Compression Driver
3 Ways to Wire Speakers
Suspension System
33. 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
Horn Loaded Cabinet
Cone Loudspeaker Parts
Divided Speaker System
Electromagnetic Speaker
34. Random noise that is at equal energy at all frequencies; - More energy at lower frequencies; Decreases in amplitude at 3 dB per octave
Polarity
Divided Speaker System
Pink Noise
Suspension System
35. RMS; Continuous; Program (Music)
3 Ways to Wire Speakers
Phase Plug
Power Ratings
Input Transducer
36. Closest to perfectly reproducing sound; No cabinets required;
Cone Loudspeaker Parts
Phase Plug
Amp Stereo Mode
Electrostatic Speakers
37. Output transducer used to output sound; Last piece in the sound reinforcement chain
Loudspeaker
Powering Speakers
Cone Loudspeaker Parts
Electromagnetic Speaker
38. Holds cone loudspeaker components together; Serves as a support skeleton
Pink Noise
Divided Speaker System
Peak
Basket
39. The amount of energy measured over time measured in Watts (W)
Transducer
Divided Speaker System
Power
Impedance
40. Speaker driver designed to reproduce low frequencies
Transducer
Phase
Woofer
Polarity
41. 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)
Compression Driver
Phase
Nominal Impedance
+/-6 dB
42. The total opposition that a device or transmission line will show to an AC or DC current at a specific frequency; Measured in Ohms (
Amp Matching
Impedance
Phase
Horn Loaded Cabinet
43. 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
Voice Coil
Cone/Baffle
Compression Driver
Magnet Assembly
44. 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
Magnet Assembly
Class D Amp
Reconing
Amp Bridge Mode
45. Suspension; Diaphragm; Dust Cap; Surround+Spider (Suspension); Cone/Baffle; Magnet Assembly; Voice Coil; Coil Form; Basket
Cone Loudspeaker Parts
Polarity
Front Loaded Cabinet
Impedance
46. A device that divides frequency bands and sends them to their respective drivers - or speakers
Suspension System
Electromechanical Speaker
Crossover Network
Dust Cap
47. Optimum speaker powering should be somewhere between Program and Peak power
Phase
Powering Speakers
Phase Plug
Input Transducer
48. Electrical device that converts one form of energy into another
Divided Speaker System
Series Wiring
Transducer
Dust Cap
49. 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
+/-6 dB
Power Ratings
50. Positives wired to negatives; Impedance added through simple addition; If single speaker fails the entire chain fails
Series Wiring
Solid Light Clip
Voice Coil
Class D Amp