Installation & Connection; Mains Connection; Audio Connection; Wiring Configuration - Alto EQU MK II Series User Manual

16. 1/4" TRS phone plug input and output connector
The 1/4" TRS connector are actively balanced and are used to input/output the signal.
17. RCA input and output connector
The RCA connector are unbalanced.
NOTE: While you can use any input connector with any output connector, only one set of these connectors is
to be used at one time, detail wiring and connection, please refer to 4.2 audio connection.
18. Ground lift switch
This switch is used to disconnect the signal ground from the mains and chassis earth. If it is determined that
the equalizer is the cause of hum or buzz in your system due to a ground loop, move this switch to the "lift"
position.
19. Fuse holder / Voltage selector
You must be sure of the Voltage available in your country because this is a Dual Voltage unit. Voltage opera-
tion can be changed through the fuse protecting the power supply but this operation must be performed by a
qualified engineer.
Please note the triangular markers on both sides of the fuse holder (see above figure). To change the voltage
pull the fuse holder out, rotate it 180 and push it back again. The operating voltage will be indicated by one
of the two triangular markers.
20. AC Inlet
This connector is meant for the connection of the supplied main cord.
Do not insert power cord into unit until voltage has been correctly set. Do not plug power cord into AC power
until voltage has been correctly set.
4. INSTALLATION & CONNECTION

4.1 Mains Connection

Please ensure that the EQU MKII Series Graphic Equalizer is set to the correct supply voltage before plugging
the power cord into the wall outlet, use the same fuse as marked on the fuse holder at the AC power connection
socket.
The mains connection of the EQU MKII Series Graphic Equalizer is made by using the enclosed mains cord and
a standard IEC receptacle. It meets all of the international safety certification requirements.

4.2 Audio Connection

The EQU MKII Series Graphic Equalizer presents with balanced XLR & 1/4" TRS and unbalanced RCA connectors,
and it can be interfaced by several ways to support a variety of applications without any signal loss. The EQU MK
II Series Graphic Equalizer can be used on a single instrument by connecting to a mixing console's main inserts,
or on an entire mix "in-line" between a mixing console's outputs and a power amplifier.

- Wiring Configuration

Either the 1/4" TRS phone jack or the XLR connector can be wired in balanced and unbalanced modes, which will
be determined by the actual application status, please wire your system as the following wiring examples:
+
Tip
Sleeve
TS Type Unbalanced
110-120V
220-240V
This is set for
110V AC TO 120V AC
operation
+
-
Tip
Ring Ring
Sleeve
TRS Type Balanced TRS Type Unbalanced
220-240V
This is set for
220V AC TO 240V AC
operation
+
Tip
(Linked to Pin1 manually,
Sleeve
Pin1 ( )
XLR Type Unbalanced
8
110-120V
Pin2 (+)
Pin3 (-)
Pin3 (-)
)
Pin1 ( )
XLR Type alanced
Pin2 (+)
B