An analog mixer combines audio signals from microphones, instruments, and other devices into a single output that can be sent to speakers, recording equipment, or a computer.
XLR Inputs: Used for microphones.
1/4-inch Inputs: Used for instruments and line-level devices.
Main Outputs: Send the final mix to speakers or an amplifier.
Aux Outputs: Send a separate mix to monitors or effects.
Each channel controls one audio source and usually includes:
Gain (Trim): Controls the input signal level.
EQ (Equalizer): Adjusts bass, midrange, and treble.
Aux Send: Sends the signal to monitors or effects.
Pan: Places the sound left or right in the stereo mix.
Mute: Turns the channel off.
Solo/PFL: Lets you listen to one channel by itself.
Fader: Controls the channel's output volume.
Gain controls how much signal enters the mixer.
Fader (Volume) controls how loud the signal is in the final mix.
Set the gain first, then adjust the fader.
Needed for most condenser microphones.
Not needed for most dynamic microphones.
Always check your microphone before turning phantom power on.
Low: Adds or reduces bass.
Mid: Changes vocal or instrument presence.
High: Adds brightness and clarity.
Start with all EQ knobs at the center position and make small adjustments.
Center keeps the sound equally in both speakers.
Left sends more sound to the left speaker.
Right sends more sound to the right speaker.
If the peak or clip light stays on, the signal is too loud and will distort. Lower the gain until clipping stops.
Feedback is the loud squealing noise caused when a microphone picks up sound from a speaker. To reduce it:
Keep microphones behind speakers.
Lower microphone gain if necessary.
Avoid pointing microphones directly at speakers.
A typical audio path is:
Microphone/Instrument → Input → Gain → EQ → Aux Sends → Pan → Fader → Main Mix → Speakers
Mixer on.
Amplifier or powered speakers on.
Amplifier or powered speakers off.
Mixer off.
XLR: Microphones.
1/4-inch TRS: Balanced audio connections.
1/4-inch TS: Instruments such as electric guitars.
RCA: Consumer audio devices.
Start with all faders down before powering on.
Turn gain down before plugging in microphones.
Label channels for easy identification.
Use good-quality cables and replace damaged ones.
Keep drinks away from the mixer.
Confusing gain with volume.
Turning the gain too high.
Overusing the EQ.
Forgetting to mute unused microphones.
Leaving phantom power on when it's not needed.
Powering speakers on before the mixer, which can cause loud pops.