- 1). The first knob in a channel row controls the overall input level of the channel. Input devices give varied signal levels, and this knob allows for a balancing. Channels with a strong input signal should be turned further to the left and channels with a weak signal should be turned more to the right.
- 2). The next three or four knobs control the tone of the signal. The top knob in the set controls the high tones, the bottom controls the low tones and the one or two in the middle control the mid-range.
- 3). The next knob is the reverb and effects the control knob. This knob controls how much reverb or other effect is added to a particular channel. On some boards there may be more than one knob dedicated to effects, but they will be labeled appropriately.
- 4). Below the reverb knob is the monitor control knob. This knob controls how much volume the primary monitors are being sent. The primary monitors are the monitors facing the performers. This allows the sound man to control the amount of a single channel without having to change the total volume. The monitor control knob is most often used to help the vocalist hear better.
- 5). Pan control controls how much sound is coming from the left or right. Audio equipment using stereo sound will use this control, but equipment using mono cables won't have to touch it. The knob works intuitively: center is a balance and turning it left or right will bring more sound to the respective side. This is the last knob in the channel row.
- 6). The master control knobs work identically to the channel control knobs, except that they affect the entire output rather than a single channel. The one unique knob is the volume knob, which works the same as a volume knob on any other piece of electronics.
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