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