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42 Cards in this Set
- Front
- Back
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2 types of public address systems
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FOH and Monitor
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What do the two PA systems have in common
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They share inputs and electricity
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Signal flow!
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Source, Split, Console, EQ, Crossover, Amps, Drivers!!!
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Bi amped cross over values
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Low X High
800Hz - 2.5kHz |
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Tri Amped crossover values
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Low X Mid X High
50Hz - 200Hz 800Hz - 2.5kHz |
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Quad amped crossover values
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Low X Low Mid X Hi Mid
50Hz - 135Hz 350Hz-650Hz X Hi 800Hz - 2.5kHz |
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Active
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Crossover feeds amps
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Passive
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Amps feed crossover
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Split
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XLR Inputs (female)
ELCO outputs XLR Return Lines (male) -crossover output to stage amps -monitor mixes when using one console -talkback to stage |
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FOH console specifics
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Crest V12
40 mono channel inputs 8 sub groups 3 (l,r, and mono) master bus 16 Aux sends Matrix 16 (alternative output of l,r, mono and the 8 groups) |
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Master bus to matrix
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-2 matrix outputs to input of
record -assign l,r,mono to matrix -matrix master outputs to unity gain -matrix one to left matrix 2 to right |
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sub group to matrix
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-deassign from master bus
-assign instrument to sub group -bring channel fader up -assign group to matrix -bring sub group master up to unity gain -add signal to the 2 matrix outputs that you are using |
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3 ways to send any given channel to the master bus
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-assign channel directly to the
master bus -assign channel to vca and master bus -assign channel to sub group and assign group to master bus |
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Kick Mics
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Beta 52 d
Shure sm91 c Beyer Dynamic M88 d AKG D112 d Seinhesser E602 d Electrovoice RE20 d AKG D12 d |
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Snare Mics
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SM57 d
Beta 57 d Sm56 d |
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Hi-Hat/Cymbal Mics
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SM 81 c
AKG C1000 c AKG C3000 c AKG C451 c AKG C391 c |
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Tom Mics
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SM 98 c
Sm 57 d Seinhesser E604 d Seinhesser 421 d |
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Guitar Mics
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SM 57 d
Seinhesser 421 d Seinhesser E609 d |
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Horn Mics
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421 d
SM98 c RE20 d SM57 d |
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Percussion Mics
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SM57 d
SM98 c |
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Piano
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Crown PCC 160
Barcus Berry SM57 d |
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Vocal Mics
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SM58 d
Beta 58 d Beyer M88 Nueman PL105 c SM87 c Audix om5, om7, om6 |
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Creating mute groups FOH
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1. Choose bank, press and hold
manual mute bank select, scroll using up and down arrows and select bank of choice, release. 2.press edit 3.press desired manual mute 1-12 4.select desired inputs or outputs through the act button 5.press store 6.press edit |
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Monitor Console
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Soundcraft SM20
40 mono inputs 20 mix outputs |
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Oscillator on monitor console (setting up)
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-assign oscillator to all buses
-mix output up to unity gain -send oscillator level |
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Sending a given channel to a mix output
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-get good level on the pre
-solo (pfl) the channel input -bring cue wedge fader up, listen, monitor, eq to taste -solo clear, bring cue wedge fader down -mix outputs up to unity gain -solo (afl) mix output -bring cue wedge fader up -send signal through send (pre or post fader) while listening. |
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Furniture FOH
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console
drive rack furman eq crossover cd player cd burner clear com (4pin xlr, 2 send, 2 return) dynamics (compressor, gates, limiters) time based processors PSU |
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Furniture Monitor
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console
eq rack amp racks (x over) inserts effects PSU split distro |
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System power and bands power has to be from...
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the same source
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Home outlets only capable to output up to...
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15 amps
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U.S. power
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117-120v @ 60 Hz
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Rest of the world power
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220-240v @ 50Hz
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DC and flow of electrons
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always goes from the negative terminal to the positive terminal.
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AC and flow of electrons
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comes one time out of the negative and one time out of the positive (frequency)
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Two different system of power
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single phase and three phase
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Single phase
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ground (green), neutral (white), hot (red and black).
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Three phase
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ground (green), neutral (white), red black and blue (hot).
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If you measure the voltage between the neutral and the hot you will get...
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117-120v
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The voltage between any two hot legs is...
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240v
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The voltage between the neutral and the ground should be...
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0v
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Connecting power
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ground
neutral hot legs in any order |
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Disconnecting power
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Hot legs in any order
neutral ground |
