Front Panel Features

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33.+48V PHANTOM POWER – This button toggles phantom power to all the XLR microphone jacks. Enabling phantom power sends low current DC voltage to a microphone’s electronics through the same cable that carries the audio signal.

Most professional condenser microphones require phantom power. There are some semi-pro microphones that use a battery to provide the required voltage, and of course many microphones that do not require phantom power at all. It is wise to make sure that the microphone you are feeding phantom power to actually requires it.

NOTES: When phantom power is enabled, refrain from connecting devices (including musical instruments) via unbalanced ¼” cables; use balanced ¼” cables instead. If you need to connect a microphone that is not phantom powered, simply connect it via a balanced XLR cable.

34.POWER AMP ASSIGN – This switch lets you choose which signals will be routed to the PA-PRO 900’s power ampliﬁ er. This provides ﬂ exibility in how the PA-PRO 900’s internal power ampliﬁ er can be utilized.

To set the POWER AMP ASSIGN switch, use a small screwdriver to maneuver the switch to the desired position.

Set this switch to MAIN L,R for straight stereo playback. When conﬁ gured this way, the LEFT channel will output to the L speaker-level outs, and the RIGHT channel will output to the R speaker-level outs. Select MAIN L, R in situations when there is no need to power a monitor speaker, either because the monitor speaker is self- powered, or there is no need for a monitor speaker.

Set this switch to MAIN L,R+MONITOR when you need to power a monitor speaker. In this conﬁ guration, the MAIN L,R mix is output to the L speaker-level outs, and the MONITOR mix is output to the R speaker- level outs.

35.CH. 1-4 MUTE – This button is used to quickly mute all audio from channels 1-4. This feature is very handy during breaks and intermissions; audio can be disabled quickly without having to adjust any other control. Push the button IN to mute the audio, press the button again (OUT) to have the audio return to the mix. When mute is activated, the MUTE LED will remain lit until mute is disabled.

36.CH. 5-8 MUTE - This button is used to quickly mute all audio from channels 5-8. This feature is very handy during breaks and intermissions; audio can be disabled quickly without having to adjust any other control. Push the button IN to mute the audio, press the button again (OUT) to have the audio return to the mix. When mute is activated, the MUTE LED will remain lit until mute is disabled.

37.POWER – Use this switch to power the PA-PRO 900 ON/OFF.

NOTE: Before powering on, make sure that voltage of your PA-PRO 900 is the same voltage as your local AC mains voltage. The PA-PRO 900 is factory set for speciﬁ c power needs