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36 Cards in this Set
- Front
- Back
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system signal path---active system
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Source(mic,DI)----Split----Console----EQ-----Crossover-----Amps-----Drivers(speakers)
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system signal path----passive system
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source---split----console----EQ----Amps----Crossover----Drivers(speakers)
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Dimensions of Meyer Hall
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Front of House board with 48inputs, 16 outputs, 3 master outputs
Monitor board-----40 inputs, 20 ouputs Tri amped system, House speakers are self powered with crossover built into them Monitor speakers are not self powered, and have crossover built into them as well. |
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Crossover
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---a little circuit board, takes an amplified signal and splits it up or filters it by high and low frequencies for the horn, woofer, and speaker
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Return Lines
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crossover outputs to amps on stage, monitor mixes if using one console, talk back to stage
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T.B.
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Aux out thru return lines to stage
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octave
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double the frequency, with every octave energy rises 3db
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white noise
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speaker hiss
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white noise
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speaker hiss, sound of electrons and current moving thru cables
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pink noise
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equal energy from every octave,(like white noise but with a pink filter)
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To test the system
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1-on touch screen select monitor
2-enable the output on the Osc. 3-press down arrow pop screen on left side to select the desired output 4-press the desired output(one at a time) 5-master output to unity gain 6-send level from the oscillator |
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+48v Phantom POwer
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1-press setup
2-select desired channel 3-press H.A. (head amp) 4-on touch screen press HA for the selected channel 5-apply +48v and phase shift |
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Mute Groups
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1- select CH job
2-press mute select 3-press and select desired ch 4-press setup 5-press user setup 6-select user defined keys from bottom tabs 7-select any of the user defined keys 1- 12 pop down menu 8-from application window select mute master 9-from parameter window select desired mute # |
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stereo bus
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L,R
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mono
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center
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mix 1
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rear left
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mix 2
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rear right
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mix 3
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subwoofer
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mix 13-16
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time based processor
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stereo return
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1-4 return of time based processor
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signal to mix output
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1. raise pre amp
2. hit PFL 3. raise cue wedge fader 4. hit solo clear, drop cue wedge fader 5. mix outputs to unity gain 6. afl the desired mix output, cue wedge fader up 7. ch fader to unity 8. send signal from ch 9. solo clear, lower cue wedge fader |
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5 wire?
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a cable that comes out of the distribution box
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appropriate power for live shows?
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nuetral + Hott =120v
2 hots = 240v nuetral + ground =0v |
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connecting power cables and disconnecting in what order?
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1. connect ground
2. connect nuetral 3. connect any of the hots to disconnect do the same thing but in the opposite order |
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single phase?
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is actually a two phase, single phase is jsut wording
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what defines power?
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current
current is measured in amps at home you only get 20 amps of power |
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power ratings
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usa power --120v@60hz
world power ---240v@50hz |
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turn system on
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1-turn on console
2-turn on drive rack 3-TBP,dynamics 4-amplifiers |
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mics for vox
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sm 58, sm 87, nuemann kms 105, audix om
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piano mics
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crown pcc160(c), barcus berry
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kik drum mics
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shure sm91 (c), AKG D112(d), E602(d), Beyer N88(d)
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on a tri amped system, where is the frequency split between lows and mids, where between mids and highs?
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low-mid---50-200hz
mid-high---800hz-2.5khz |
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on a quad amp system, where does the frequency split between the lows and low mids, low mids and high mids, hi mids and highs?
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low-low mids----50-135 hz
low mids-hi mids----400-700hz hi mids-highs-----800-2.5khz |
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How do you feed signal from multiple amps to speakers with NL8 connectors?
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build yourself a speaker patchbay...duh
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how to use the FOH talk back mic on chan 48 to talk to band on stage?
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mix output thru return lines send through aux output pre the fader
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how many circuit breakers for each 5 wire connector output from distribution box?
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3 circuit breakers
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