問題一覧
1
ADC configuration Order
SQ-6 MIXER > GX-4816 > Xilica > Meyer’s Mina (left & right)
2
GX-Rack provides what? and how amny mic preamps and outputs are there? (2)
Provides stage inputs (source) and outputs (Mains/Monitors), 48 mic preamps and 16 assignable outputs.
3
What does the Xilica Processor do? (speaker managment) (3)
From GX Rack L/R outputs to L/R input of Xilica, Output, crossover Mid/Highs to Meyer’s Mina Line Array, Output, crossover Low to Meyer Mina Subwoofers
4
What are Speaker Processors and how many inputs and outputs (3)
Can have a minimum of 2 inputs and 6 outputs, Can be used by taking the L/R output from the mixer and distributing audio out to multiple speakers., Can provide Gain.EQ, Delay, crossover and limiting.
5
Cat 5 Cable uses (3)
Can support 64 channels of digital audio at 48kHz, 32 channels of digital audio at 96kHz, 100 mbit/sec
6
Speakers used in ADC (6)
Mon SR (Stage right Passive), , Mon Centre (passive), Mon SL (passive), Drums: Mon 5 (Active), Piano: Mon 4 (Active), Meyer’s Mina : 2 Low and Mid/High for Left and Right
7
5 x Independent monitor mixes includes: (2)
3 x Passive , 2 x Active
8
In Ear Monitors includes: (2)
3 x Stereo, 2 X Mono
9
4 Audio signals used in professional audio systems includes: (4)
Microphone Level, Instrument Level, Line Level, Speaker Level
10
What is the lowest level audio signal used in a prof audio system?
Microphone Level
11
What is the highest voltage used audio signal in a prof audio system?
Speaker Level
12
What is the highest signal before amplification and what are the 2 variations called? (3)
Line Level, Consumer (-10dBv) is 0.316 volts, Professional (+4dbu) is 1.228 volts
13
Define Headload
Speaker level to mic level (radial)
14
Mixer converts what?
Can convert Mic level to line level
15
What are mIcrophones?
They are transducers that use electromagnetic induction.
16
What's a Transducer? and how does it work? (3)
A device that converts sound signals to electrical signals into sound., When sound waves hit a thin diaphragm causing it to vibrate, The diaphragm is attached to a coil that is surrounded by a magnet
17
What does the magnet do for a mic? (3)
Creates a magnetic field around the coil. , Sound waves move the coils past the magnet and create an electrical current., Creates sound Signal
18
What is an example of a Low output mic?
Dynamic Mics
19
What is an example of a high output mic?
Condenser mics
20
What are Dynamic Mics? (4)
Output really low levels, need amplification to boost signal, It is possible to boost the gain by 50 - 90 db of gain, Does not require phantom power
21
What are Condenser mics? (4)
High Output and requires less amplification., They have Amplifiers built into them to help with proper levels preamp(head amp), They require phantom power, Less durable
22
What do Analog Mixers do? and why use it? (4)
Adjust the volume and tone of input audio signals. , Most of the control knobs and faders are arranged on the top panel, it is easy to understand the signal flow and what state the audio is in., Operating analog mixers is normally an intuitive process
23
Digital Mixers includes: (5)
Process input audio signals and adjust their volume and tone using digital signal processing technology, Various kinds of tone control that would be impossible using analog equipment can be applied using digital processing., Can store the positions of faders and knobs, and recall these positions in an instant., will require more experience to set up effectively, but will offer far greater functionality than an analog mixer., have all the signal processing on board including, EQ, compression, effects, graphs, as well as scene templates, recording options, output processing, automation, and more.
24
What are Powered Mixers? (5)
They are analog mixers with built-in power amplifiers. , Sound can be played with the mixer directly connected to speakers., Can be used by simply turning the power on, so operation is simplified and convenient., These are non-professional mixers and are typically seen in coffee houses, and small conference rooms., They offer limited functionality and typically include a small number of inputs with fixed EQ, a small graph, a couple or outputs and on-board effects.
25
Input sources include:
Microphones, DI Boxes, Passive DI Box, Active DI Box, Line level input sources
26
DI Boxes do what? (Direct injection/input)
Convert unbalanced high z signal to balanced low z signal.
27
What's a Passive DI Box? (3)
The term "passive" indicates that the unit does not require a battery or other power source to operate., Less expensive passive DI units are more susceptible to hum, and passive units tend to be less versatile than active. , They cannot include preamplifier features which enable the user to boost the gain.
28
What does a Active DI Box do? (2)
Contains a preamplifier. Therefore provide gain, and are inherently more complex and versatile than passive units. , Requires a power source, which is normally provided by batteries or a standard AC outlet connection, and may contain the option for phantom power use.
29
Line Level input Sources examples uses
Such as playback machines (computer interface, media players, other mixers)
30
What are Amplifiers? (2)
They are devices that amplify electrical signals that have been adjusted to an appropriate volume and tone sent from the mixer., Varying in size, shape and output power, which are suited to different situations.
31
What type of speakers are there? (2)
Active , Passive
32
What are ACTIVE Speakers? (4)
Easiest to deploy with built-in amplifiers that are matched to the speaker components., Woofers, mid-range, tweeters, compression drivers, They only require a line level input and you won’t have to use separate amplifiers to power them., Require power from cable or Batteries
33
What are PASSIVE Speakers? (3)
Require amplification, speaker cables, and may require an outboard crossover and other signal processing, Some will utilize an internal crossover network, which functions like the active speakers. , You’ll need to look at the specification sheet by manufacturer to determine correct amplifier
34
Some _______ speakers will utilize an internal crossover network, which functions like the active speakers.
Passive 1
35
Point Source Loudspeaker is what?
A single speaker, or multiple speakers placed far apart, broadcasting a full range of sound from a single point
36
Line Array Definiton-
A single speaker radiates sound in a spherical pattern and therefore has less range.
37
Line Array PA System does what? (2)
Features a number of identical loudspeakers arranged in a vertical line., Allows sound waves to constructively interfere with each other so that they can send sound waves farther than single source loudspeakers, in a directional path.
38
Line Array PA System's Advantages and Disadvantages (2)
Allows frequency response and clear sonic coverage throughout the range of the system. , Suppression of the high frequency output and the physically time-shifted outputs from the individual speakers.
39
Stage Box is what? (3)
is a rugged metal housing used in the audio engineering and entertainment fields to connect microphones and other sound equipment to the multicore cable., Functions as an extension of the equipment cables, allowing for the sound desk to be situated further away from the stage., Sometimes referred to as an audio snake or simply Snake
40
What are some examples of Analog Audio Transmission? (3)
Typically come in 2-wire, 3wire and on occasion, 4 and 5-wire., XLR Male and Female, TRS (Tip ring sleeve)
41
What are all the wire signal definitions? (4)
2-Wire: Signal (+) and shielded common., 3-Wire: Signal (+), Signal (-) and shielded common., 4-wire: signal (+), signal (-), common and shielded ground, 5-wire: 2X signal (+), 2 X signal (-), and shielded common (ie/ StarQuad
42
What are the XLR cables and what do they do? (2)
XLR Male - Connects to various hardware inputs., XLR Female- Connects to the Mic and various hardware outputs.
43
TRS (Tip ring sleeve) does what?
Connects to both input and outputs.
44
What is SLink? (3)
Ethernet audio expansion port with locking EtherCON connecter supporting multiple AoIP protocols, Provides access to 64x64 digital channels, Connected over a single cable ‘digital snake’ and allowing remote preamp control to mixing systems
45
Microphone Level is (3)
The signal being produced from the microphones or equivalent devices such as a direct box., This is the lowest level mentioned, Requires preamps to raise levels to next stage. Between 0.001 volt and 0.10 volts
46
Instrument Level is (2)
The level output of keyboards, sample pads, etc., Voltage approx 0.6 volts
47
Line Level is (2)
The highest signal before amplification and is produced via pre amps. , There are 2 variations called Consumer (-10dBv) is 0.316 volts and Professional (+4dbu) is 1.228 volts
48
Speaker Level is (2)
The Highest voltage used and are post amplification., Speaker level range is wide. Can go as high as 100 volts
49
What are ACTIVE Speakers? (3)
Easiest to deploy with built-in amplifiers that are matched to the speaker components., Woofers, mid-range, tweeters, compression drivers, They only require a line level input and you won’t have to use separate amplifiers to power them.