User guide

821030: AMPx-S8 Series User Guide

Chapter 3 Audio Configuration

Phase Correlation

Pressing the Mute button allows you to step through three mute

states and an unmuted state. When the system is in one of the

mute states, all other information normally shown in the LCD such

as the Input Status Display is disabled. In addition, all other

buttons are disabled until you unmute the system. See Table 3–2

below.

Muting functions affect the signals to the speakers, headphones and the

rear panel

Selected/Downmix Analog Output connectors. Muting

does not affect the Metered Analog Ouputs except to defeat scaling.

These outputs reamain active even when the mute state is enabled.

Phase Correlation

1. Pressing the  button displays the phase correlation indicator in

the LCD screen.

The average correlation (phase) for the signal going through the left

speaker compared to the signal going through the right speaker is

indicated by a stationary block appearing in one of three positions on

the second line of the screen. A moving block indicates an

instantaneous (short term sample) phase correlation. Each of the three

positions has a different meaning.

• Center: Only one channel active, or zero (0) correlation between the

two channels

• Left (-): Selected channels are out-of-phase (-1 correlation

maximum)

• Right (+): Selected channels are in-phase (+1 correlation

maximum).

Table 3–2 Mute Mode Functionality

Button Press Muted State

1st Mutes both left and right speakers

2nd Mutes the left speaker

3rd Mutes the right speaker

4th Returns the system to normal operation