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Exams: THX Home Theater Level 2
THX Home Theater Level 2
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Welcome to the THX Home Theater Level 2 exam. This is a 30 question exam. You must receive an 80% to pass. You have three attempts to pass and it must be completed in 3 weeks.
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Congratulations! You passed the THX Home Theater Installer Level Two exam.
In the THX Professional Portal, you now have access to all corresponding resources including logo files and style and usage guides. Your certificate will be mailed to you, and you will be listed on our website in the THX Certified Technician Locator, so please be sure your contact information in your Professional Portal account is up-to-date.
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You gave it a good effort, but you have to score an 85% or higher in order to pass. The good news is that you are allowed 3 attempts at this exam. So review your answers and give it another go when you’re ready.
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Question 1 of 30
1
Which is not a part of active listening?
29 remaining
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Question 2 of 30
2
What is the best way to future proof a theater/home?
28 remaining
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Question 3 of 30
3
In all good home theaters,
27 remaining
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Question 4 of 30
4
A reference quality home theater will have a background noise rating of _____ or better.
26 remaining
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Question 5 of 30
5
An excellent home theater will have a reflected sound decay of about _____.
25 remaining
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Question 6 of 30
6
In a high quality home theater, sound reflections are is best controlled by _____.
24 remaining
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Question 7 of 30
7
What is the formula to calculate wavelength, where λ is wave length, c is speed of sound and f is frequency?
23 remaining
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Question 8 of 30
8
What is the wavelength of a 60 Hz bass note?
22 remaining
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Question 9 of 30
9
The resonant frequency of the first harmonic along the length axis of a 25 foot long room is________ ?
21 remaining
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Question 10 of 30
10
The null of the second axial bass mode in a room will always be _________.
20 remaining
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Question 11 of 30
11
Poorly controlled bass modes are a problem because __________.
19 remaining
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Question 12 of 30
12
Slap echoes can be controlled by _________.
18 remaining
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Question 13 of 30
13
What absorber thickness should you use if you want to absorb down to 250 Hz?
17 remaining
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Question 14 of 30
14
Acoustically transparent fabric which is hiding acoustic treatments should be acoustically transparent below ________ at a minimum.
16 remaining
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Question 15 of 30
15
In a high-performance home theater, what percentage (approximately) of the walls should be absorptive?
15 remaining
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Question 16 of 30
16
Speakers are easiest to aim and position when listening to ______.
14 remaining
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Question 17 of 30
17
The center channel should be no more than ____ degrees above/below left and right speakers.
13 remaining
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Question 18 of 30
18
True/False: Dipole surround speakers are not recommended in home theaters designed for immersive audio.
12 remaining
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Question 19 of 30
19
The side surround speakers should be placed _____degrees apart from the center speaker in a 7.1 configuration.
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Question 20 of 30
20
What is the recommended screen height a display for a projector screen when using a Ultra HD/4K display?
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Question 21 of 30
21
What is the recommended number of subwoofers in a high-performance home theater?
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Question 22 of 30
22
The greatest angle a viewer should have to look up to the center of a screen is ______.
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Question 23 of 30
23
What is the target luminance value for a front projection system in a dark room using a lamp based projector (answer is 2x to account for loss of lamp life)?
7 remaining
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Question 24 of 30
24
What are the benefits of using a 1.0 flat white screen (Lambertian diffuser)?
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Question 25 of 30
25
The finish of the walls and ceiling around a projection screen _________.
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Question 26 of 30
26
Why are programmable controls desirable in a home theater?
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Question 27 of 30
27
Sound isolation is best achieved by ________.
3 remaining
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Question 28 of 30
28
What is the latest version of HDCP copyright protection
2 remaining
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Question 29 of 30
29
If a client sits 2/3 of the way back in a theater and you suggest a 40° field of view, what should the screen width be if the primary seating position is 8 feet away?
1 remaining
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Question 30 of 30
30
Calculate the image brightness for a 16:9 screen with is 8.74 ft. wide and 4.91 ft. tall using a 1500 ANSI Lumen Projector and a 1.0 gain screen.
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