Gain Structure
Microphone: Speak up; Speak close to Mic
Sound Check Process
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1. PFL The channel
2. Set Fader to -5 and unmute channel (give more headroom when we move up or down)
3. Bring Gain In
4. Set EQ ( EQ - Low Frequency 300HZ Boom, 1KHZ, 3000 HZ voice presence)
5. Make Final Gain Adjustment
6. Pull down fader to minimum
7. Mixer Monitors
8. Check everyone happy
9. Pull Fader Back up to -5
10. Repeat
Check LED Meter not to PEak or read light
Setting gains: Vocals
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Proximity Effect -
When microphone is close to singer - more base
soft
loud
for filter - high pass
Signal to Noise Ratio
SNR - Signal to Noise Ration
ENI - Equilivent Input Noise ''
Poor - Direct to reflective Ratio
Poor Direct to Reflect noise Ratio
Residual Noise
Program Source ---> Mixer ---> Signal Processor ---> Amplifier ---K Ldspk
Program Source (Mic Level (Balance signal) or Line input (50 db higher than Mic Level)
Input passes signal to Pre-Amp which is control by the Gain
to OnBoard Dynamics = Compressor, Gate, Limiter, EQ, Expander, and DSR
PFL (Pre Fader Listen) - To solo a channel for listen only in monitor
Channel Fader
PAN - Left /Right Channel (stereo effect)
Mute
Mixer - Max Amplied volt = 10 volts
- Avg Max Volt = 1V
Real World
Program source - 1V - 1m volt mic voltage (1mv) to line level of 1V
Mixer Gain to line level
input sensitivity setting = Gain Setting
Amplifier adjusted LAST!
Credit: https://www.rane.com/video-5-minute-gain-structure.html
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