The role of the mixer of the mixing console

The mixer can realize multiple input and output, timbre adjustment, and convenient volume adjustment. If there is no mixer, you can only connect the CD*** microphone on the power amplifier, the number of microphones will not exceed two, and the microphone preamplifier will be relatively poor, the source search leads to bad sound, and it is inconvenient to adjust the volume.

In terms of configuration, if the requirements are not high, your equipment plus a mixer will do the trick. There should also be ***, cd and the like. It's a good idea to add a reverb to better polish the vocals.

1. The mixer overload indicator is used to warn the input signal to be overloaded instantaneously, and the indicator will light up when the peak (the signal is too large and the level is distorted) is 3db below the level, which is convenient to help set the position of the gain switch. Be careful not to let this signal light stand red! Amplifier output level display:

The display is a color LED trapezoidal group, which is used to instantly display the level height of the power amplifier. Normal levels are in green; When the amplifier requires a sustained signal of high pitch, the level signal is yellow; At the peak of the song's audio signal or when the drum is playing, the red light-emitting diode flashes (and sometimes shines). All of the above are normal.

If the red LED stays on, the amplifier may be overloaded. This often happens when one amplifier drives multiple loudspeakers, and the system should be reconfigured to eliminate this overload. Amplifier Peak Display (Peak):

When the Peak diode is shining, the gain control should be lowered down.

15db slope Influence area: The higher harmonics in the high register of the instrument. Buff Effect:

The metallic sound increases, the timbre is sharper, the gain is excessive, and the noise can be clearly heard. Attenuation effect: It can effectively remove hiss, and if there is too much attenuation, the transparency of the treble will be lost.

3. Intermediate frequency: 3khz?15db peak affected area:

Instruments, the treble of the vocals. Gain effect: The timbre is bright, the texture is hard, and the auditory fatigue is easy to feel if the gain is too much.

Attenuation effect: The balance will be biased towards the bass, including the sound. Midrange:

1khz?15db peak area of influence: instrument, midrange of vocals.

Gain effect: The timbre is well contoured, the pan is convex forward, and the drum head is modulated. Attenuation Effect:

The voice shrinks. Intermediate frequency: 500hz, 15db peak Affected area:

Musical instruments, vocals of the mid-bass Changzhou frontal area. Buff Effect:The timbre is thick and powerful, and too much gain will cause ** timbre. Attenuation Effect:

The capsule is stiff, the balance tends to be high-pitched, and the texture is thin if there is too much attenuation. Low frequency: 100hz15db slope, affected area:

The bass area of the instrument. Gain effect: The timbre is rich, and if the gain is excessive, the tooth sound will not be clear.

Attenuation: The sound is relaxed, the teeth are good, and background noise and hum can be effectively removed.

How to get the best results from the mixer:

1. Sound quality compensation: Sound quality compensation is to use the sound quality compensator to adjust the center frequency of each frequency band to change the timbre of the sound.

2. Volume adjustment: Before tuning, the dynamic level, frequency characteristics and the proportional relationship between the signals on the scene should be clear to the original sound signal, and it is necessary to listen to the first penetration and debug repeatedly, and at the same time, it is necessary to take into account the various conditions and playback effects of future playback.

3. Signal input: From top to bottom is the tweeter XLR socket, receiver input, usually providing conversion power.

4. Plug into the socket: The insertion point is usually located in the input channel of the tuning meter, that is, in front of the signal path, and sometimes directly in the channel input. This dynamic processor insertion point is typically used.

5. Sound control panel: There is a four-segment control panel, here, we can adjust the signal frequency of high, medium and low for each path.

6. Signal calibration table: Use the auxiliary send port to send the signal to an external processor for effect processing, and then send the processed signal tuning table through the auxiliary return port. When allocating noisy outputs, the bus can be occupied by the main output, secondary transmission, and return, and there can only be four signal outputs, the more assignable lines there are, which is important for multi-channel recording.