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| An electron that's able to easily move from one atom to the next |
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| A material that permits the free flow of electrons |
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| A material that impedes the flow of electrons |
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| 3 things in an electrical circuit |
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| V source, Load, Conductor |
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| Frequency of AC power in the US |
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| 50% of power in the US is generated by... |
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| 3 types of power generation besides coal |
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| Nuclear, Wind, Solar, Hydro-electric, Geothermal |
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Ohms Law Symbol, Unit of Measure for
Current |
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Ohms Law Symbol, Unit of Measure for
Electromotive Force |
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Ohms Law Symbol, Unit of Measure for
Resistance |
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Ohms Law Symbol, Unit of Measure for
Power |
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| 3 Components of an AC generator |
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| Armature, Magnetic field, Slip Rings, Brushes, Load |
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| According to Ohms law, if you increase ______, the amperage (current) decreases |
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| All power plants generate how many phases of power |
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# of Conductors, Colors
Single Phase |
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| 4, red, black, white, green |
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# of Conductors, Colors
3 Phase Y |
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| 5, red, black, blue, white, green |
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| In 3 phase Y, each hot leg is _____ degrees out of phase with the others |
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# of Conductors, Colors
3 Phase Delta |
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| 5, orange, red, white, black, green |
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| Total amps from a 200 amp 3 phase disconnect |
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| standard connector from Power Distro to Disconnect |
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| POWER OFF, Ground, Neutral, Hots |
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| Disconnect sequence when unhooking power |
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| POWER OFF, Hots, Neutral, Ground |
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| once power is tied in you are ready to start... |
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3 phase Y
Voltage between hot and neatral |
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3 phase Y
Voltage between hot and hot |
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3 phase Y
Voltage between neutral and ground |
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| how can you make sure a singing guitarist doesn't get shocked |
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| meter between mic casing and guitar strings |
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| 3 manufacturers of power distros |
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| Motion Labs, Ramtech, Applied Electronics, ETC |
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| 2 types of over current protection |
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| Circuit Breakers' 3 functions |
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| 2 common graphs in spec sheets |
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| maximum V to the consoles inputs before clipping preamps |
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| input impedance must be 10 times ____ than output impedance |
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| anything that alters a pure audio signal |
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| Total Harmonic Distortion |
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| second order harmonic of 440Hz |
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| Intermodulation Distortion |
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| Intermodulation Distortion is caused by |
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| interaction of 2 or more frequencies |
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| Define musical dynamic range |
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| The difference between the quietest and loudest note |
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| define electronic dynamic range |
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| difference between noise floor and max output level |
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| 2 types of amp input connectors |
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| 2 types of amp output connectors |
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| NL2, NL4, Banana, Binding Post |
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| amps output higher wattages when connected to lower impedance drivers |
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| define amplifier slew rate |
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| it's ability to track the input signal |
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| 3 categories of speaker specs |
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| Driver, Band Pass, Cabinet |
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| what exactly do you learn from the Sensitivity spec |
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| 3 types of internal wiring for drivers in a cabinet |
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| series, parallel, series parallel |
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| define bandpass impedance |
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| the impedance of multiple drivers wired together |
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| 2 factors that determine the impedance of a driver |
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| length and gauge of voice coil |
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| impedance of 2 8 Ohm drivers in series |
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| impedance of two 8 Ohm drivers in parallel |
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| 4 types of speaker cabinet input connectors |
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| NL4, NL8, XLR, TS, EP4, EP8 |
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| speaker cabinet frequency response becomes less directional at higher frequencies |
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| what are audio horns used for |
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| control the coverage area of a speaker in both the vertical and horizontal planes |
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| Dynamic, Condenser, Ribbon |
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| microphones are transducers that convert what into what? |
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| 3 components of a dynamic mic |
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| 2 types of mic other than dynamic and condenser |
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| 5 most common polar patterns |
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| Omni, Bi-directional/figure 8, Cardioid, Super Cardioid, Hyper Cardioid |
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| another name for a figure 8 polar pattern |
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| monitor wedges should be place where in relation to a cardioid mic |
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| define mic frequency response |
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| how well a microphone translates a sound into electrical energy across the audible spectrum |
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| in a perfect world, every mic would have a perfectly flat frequency response |
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| why do vocal mics have a rise in their high frequency response |
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| 2 settings you will often find on a condenser mic |
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| Pad, HPF, Polar pattern switch |
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| define transient response |
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| a mic's ability to quickly react to changes in air pressure |
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| most professional mics have an output impedance between 50 and 250 Ohms |
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| a boost in low frequency response as a microphone moves closer to a source |
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| 2 instruments that you would double mic |
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| Snare, Lesley, Kick, stereo guitar rig |
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| Shock mount, windscreen, stereo mounting bar |
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| 4 stereo mic configurations |
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| AB, XY, NOS, ORTF, Binaural |
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| 4 functional uses for mics |
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| Lav, Parabolic, stereo, hand held, stand mount |
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