Extron electronic MPX Plus 866 A Mic mixer block E, Mic mixer block and mic mixing dialog box

Mic mixer block (E)

The mic mixer block (figure 5-8), an array of points where mic audio can be mixed into the output audio, provides a way to unmute and mute the normally muted inputs from the mic/line input signal processor chain. Unmuting effectively mixes the mic inputs into the audio outputs at the level set in the left and right mix controls.

Mic Mixer

Level Control Faders

Figure 5-8 — Mic mixer block and mic mixing dialog box

•To mute or unmute a mic, double-click one of the mix-points () to open a mic mixing dialog box. Click the left and/or right Mic Mute buttons in the dialog box to unmute or mute the applicable mic/line input into the left and/or right output channel. The appearance of the mix-point indicates the mic/line input connection status as follows:

Muted

Mixed into both (left and right) output channels

Mixed into the left output channel only

Mixed into the right output channel only

NUnlike from line inputs 1 through 14 (typically program audio), more than one mic audio input can be mixed into a single audio output.

NNote the message “Mic is muted at input!” in figure 5-8. This indicates that Mute is selected in the mic/line input gain control block.

•The mic mixing dialog box includes level controls that provide separate left and right output channel faders for mix (level) adjustment with a gain range of -35 dB to +25 dB in 1 dB increments. The default setting is unity gain (0 dB).

•The Gang button lets you couple the left and right faders.

Ganged faders move together at relative levels to the top or bottom of their travel. If one fader reaches the limit of its

travel first, it retains that position while the other fader continues to travel. When the ganged faders travel in the reverse direction, the fader that was at its limit reverts to its position relative to the other fader.

MPX Plus 866 A Media Presentation Matrix Switcher • Switcher Software 5-15

PRELIMINARY