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