Optimus PM-804A Installation And Operating Instructions Manual page 18

PM-804A
8x4 Matrix Mixer
5. REAR PANEL
1. AC Power input connector.
AC mains input to connect supplied power cable. Please, make sure that fuse is the right value
before replacing it.
2. Remote inputs.
These RJ45 jacks allow to connect WP-1 wall control panel for adjusting volume level and
inserting music source in remote area.
3. Line outputs.
These LINE output blocks can be connected to the input of a power amplifier.
4. TRIM controls.
These controls allow to accept variable input level. There is a 44 dB adjustable range: from
-50 dB to -6 dB for microphone input channels and -30 dB to +14 dB for line input channels.
5. Signal input connectors (XLR / RCA / 1/4'' Jack).
This matrix mixer provides several connectors for signal inputs that allow easy connection of
external equipment. CH1~4 inputs: Mic/Line balanced input. CH5~8 inputs: Mono line input.
6. TALKOVER switch.
If TALKOVER is set to ON, all signals of lower priority are muted automatically by the input
signal of channel 1.
7. PHANTOM power switch.
The phantom power can be provided to each microphone input to use electret microphones.
8. MUTE terminals.
Mutes output signals CH1~CH4 employing muting function by short-circuiting at these terminals;
independent MUTE available as well as all zone.
9. 24 VDC input and LINK terminal.
These terminals are provided to connect a 24 VDC battery source. The device will supply power
to other devices by the LINK output terminal.
10. Remote Mic input.
This RJ-45 connector allows to connect a PM-4Z (desktop paging microphone) for individual
zone announcement.
PM-804A Version 1.1 Page 6 of 11