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