User Manual

OB1 SERIES USER MANUAL
V1.0
1
BALANCED
OUTPUT
Sends a balanced, line-level signal (post-EQ, post-Blend, pre-Master Volume) to a
mixer and/or PA system. Engage/depress the ground LIFT/GND button if ground hum
becomes a problem when connecting the amplifier to external equipment.
Note: A speaker must remain connected to the Speaker Outputs when the DI Output is
in use.
2
LINE OUTPUT
Sends an unbalanced, line-level signal (post-EQ, post-Blend, pre-Master Volume) to a
mixer and/or PA system.
Note: A speaker must remain connected to the Speaker Outputs when the Line Output
is in use.
3
FAN INTAKE
Do not obstruct or place objects into the fan! During sustained periods of high
volume playing the fan will begin to operate to help cool the amplifier.
4
SPEAKER
OUTPUTS
Make sure the correct speaker load and power handling is connected at all times!
Refer to ‘Before Using Your Amplifier’. Total minimum impedance = 4 Ohms.
5
VOLTAGE
SELECTOR
This is factory-set for the region in which the amplifier is intended to be sold. Refer
to ‘Before Using Your Amplifier’.
6
AC MAINS
INLET
Connect the supplied IEC cable to the mains input. Refer to ‘Before Using Your
Amplifier’.
7
MAINS FUSE
The mains fuse is located in the tray directly below the AC Mains Inlet. If the mains
fuse blows, replace only with the exact rating for your region. If the mains fuse
repeatedly blows, contact your Orange dealer.
Region/Voltage
OB1-300
OB1-500
100 - 120V
T6.3AL
T8AL
230 - 240V
T3.15AL
T4AL
8
MODEL
PLATE
The model name, output power and serial number is displayed here. Ensure that the
power handling/rating of the speaker cabinet(s) connected to the amplifier is equal to
or exceeds the output power of your amplifier.
REAR PANEL FEATURES
6 7
1 2 3 4 5 8