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Rear Panel Features
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1. SYSTEM 70/100 VOLT SELECT - One, switch. Slide switch to select between 70V and 100V for a high-
voltage audio distribution system. This setting will affect all zones in 70V/100V mode. Set for 70V when
voltage select is set to 110-120VAC; Set for 100V when voltage select is set to 220-240VAC.
2. ZONE IR, MUTE & STATUS TERMINAL - Six, plug-in screw terminals. Provides connections for zone
specific IR control, mute and status.
IR IN - Connect IR IN & GND to the Emitter OUT on an IR Control system for zone IR control using the
0E-IA1250 IR Remote.
Mute - Connect to a +3 to +30VDC @1mA control voltage to mute the local zone.
Status - Provides a 12VDC 1mA Control OUT to trigger zone specific voltage controlled devices.
3. ZONE SPEAKER TERMINAL- Six, plug-in screw terminals. Each terminal has six connections for different
speaker output configurations including:
Bridge 8Ω - Use indicated terminals for high output mono speaker connection. (100W @ 8 Ohms)
NOTE 1: 8Ω/4Ω - 70V/100V switch must be in the OUT position.
NOTE 2: The Stereo/Bridged switch must be in the IN (Bridged) position.
4Ω/8Ω - Use indicated terminals for normal stereo speaker connections. (30W @ 8 Ohms;
50W @ 4 Ohms)
NOTE 1: 8Ω/4Ω - 70V/100V switch must be in the OUT position.
NOTE 2: The Stereo/Bridged switch must be in the OUT (Stereo) position.
70V/100V - Use indicated terminals for 70V/100V stereo speaker connections. (30W @ 70V/100V)
NOTE 1: 8Ω/4Ω - 70V/100V switch must be in the IN position.
NOTE 2: 70V/100V High Voltage Speaker Output Switch must be set to proper voltage.
NOTE 3: The Stereo/Bridged switch must be in the OUT (Stereo) position.
4. ZONE LINE/BUS TRIGGER IN- Six, 3.5mm mini jacks. This voltage controlled input switches the zone
audio input from Line IN to Audio Bus IN. When there is no voltage applied, the zone audio input is zone
Line IN. When voltage is applied (+3 to +30VDC @1mA) the zone audio input will switch to Audio Bus IN.
5. ZONE 8Ω/4Ω - 70V/100V SWITCH - Six, push buttons. Press to select 8 Ohms/4 Ohms - 70V/100V by
zone. Leave OUT to select 8 Ohms/4 Ohms, press IN to select 70V/100V.
6. MASTER CONTROL IN - One, 3.5mm mini jack. Connect to a +3 to +30VDC @1mA control voltage to turn
the 0E-IA1250 ON. NOTE: Power ON/OFF switch must be in the OFF position when using this feature.
7. MASTER CONTROL OUT - One, 3.5mm mini jack. Connect to any voltage controlled device that is to be
turned ON/OFF relative to 0E-IA1250 ON/OFF Status. When any zone on the 0E-IA1250 is ON the Master
Control OUT will output 11.5VDC@1mA-10VDC@5mA. When all zones are OFF the Master Control OUT
is 0.0VDC.
All manuals and user guides at all-guides.com
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