What does the bottom pot in auxes 1-6 control?

The bottom pot in auxes 1-6 is used to control the even level, which refers to the output level of signals being sent through the auxiliary sends on a mixer. This means that each of the auxiliary sends has a corresponding level control that dictates how much of the input signal is being sent to the auxiliary mix. The term "even level" suggests that you can adjust this send level in a balanced manner for each of the even-numbered aux outputs, allowing for consistent volume levels when routing signals to external effects or monitor systems.

This control is essential because it allows the sound engineer to manage mix dynamics effectively, ensuring that the signals going to effects, or monitor mixes maintain the desired balance without distortion or unintended changes in volume. The other options do not accurately describe the function of the bottom pot for auxes 1-6. For instance, "odd level" would relate to a different set of controls not covered by this specific pot, while "master level" refers to the overall output level of the mixer, and "input level" pertains to the initial level of the incoming signal before any processing occurs.