Yamaha 4000 Stereo module setup

Here we are going to walk through the setup steps for a stereo moduule in the Yamaha PM4000. The adjusts will be be explained in the order they are found inside the module, not necessarily the order that a A1 would set them up.

Phantom Power

Turn on if upstream devices require power from the audio console

Set the gain

Adjust the gain - Clockwise increases gains
Microphones usually are 40-70 dB lower in level than most other equipment
Knobs are labelled as to what the input level is
The knob has an inner and out part. one is for L and the other is R
There is also a +30 dB boost button

Set channel phase

This control is only used if a source is out of phase
As out of phase audio will then to cancel other channels
This is generally a troubleshooting tool

Set channels in use for this module

This is only valid for Stereo modules, not monuaral modules
Select L (odd groups), R (even groups), L + R, or Stereo

High pass filter pass through

Selecting this control passes audio through a high pass filter
This is used mainly to eliminate low frequency hum
Knob below selects the low frequency elimination point

Select Insert path out

This button determines whether the signal will be routed outside for external processing

Select internal frequency processing

If selected four frequency bands adjustment can be made
The first band is the Lo band - 30 - 600 Hz
There are 3 possible controls here
The bottom control is a pair of knobs - inner and outer
The outer selects the frequency to be affected
The inner sets the gain (plus or minus) for the frequency selected
The upper knob selects the Q - that is how sharp or broad
    the area around the selected frequency is effected
The button to the right is known as the shelving control
It creates a frequency break point where instead of a peak or valley all frequencys
    above that point are of higher gain

If internal frequency processing is selected

The second band is the Lo-Mid band - 80 - 1,600 Hz
Notice that these bands overlap
There are the same 3 possible controls here
There is no shelving control here

If internal frequency processing is selected

The second band is the Hi-Mid band - 400 - 8,000 Hz
Again notice that these bands overlap
There are the same 3 possible controls here
There is no shelving control here

If internal frequency processing is selected

The second band is the Hi-Mid band - 1,000 - 20,000 Hz
Again notice that these bands overlap
There are the same 3 possible controls here
There is shelving control here - This determines where the upper range is cutoff

Fader Control

This fader bar is one of two controls that determine the audio level in this module

VCA (Voltage Controlled Amplifier) Group

These buttons assign center console VCA controls as a second fader control
This is a way that a single "master" fader can control multiple channels
This is one way to set up a submix

Mute Group

These buttons assign center console Mute controls to channels
Another way to mute many channels with one control

Channel On/Off

Able/Disable channel

Mt Pre (Pre-Fader)

This control determines if pre or post fader audio is fed to the modules VU meter and Cue/Solo channel

Aux Outputs

Mixer has 8 aux outputs
Each as a combination switch and variable know the selects pre or post fader, or off, and level

Pan Control

Button enables pan control knob
The knob allows the audio in the module to be variable mixed to either the left or right channel

Group Assign

Here you assign the channel to any of 8 groups
By definition the odd channels are left channels and the even right channels