Nilfisk-ALTO HPA6 - Manual (Page 8)

4. INSTALLATION & ONNECTION C
4.1 Mains Connection
This is a dual voltage unit. Please ensure that the LTO HPA6 6-Channel Headphone Amplifier 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.
Do not insert power cord into the unit until voltage has been correctly set. Do not plug the power cord into
AC power until voltage has been correctly set.
The mains connection of the LTO HPA6 6-Channel Headphone Amplifier is made by using the c en losed
mains cord and a standard IEC receptacle. It meets all of the international safety certification requirements.
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4.2 Audio connection
The HPA6 presents with balanced XLR connectors and 1/4" TRS phone jack and 6-Channel Headphone Amplifier
it can be interfaced by several ways to support a variety of applications without any signal loss.
a. Wiring Configuration
b. In Line Connection
For these applications, the provides HPA6 6-Channel Headphone Amplifier XLR connectors and 1/4" TRS
for your particular connection.
For 1/4" Phone jack
For XLR connector
XLR Type Unbalanced XLR Type alanced B
Pin3 (-)
Pin2 (+)
Pin1 ( )
(Linked to Pin1 manually, )
Pin1 ( )
Pin2 (+)
Pin3 (-)
TS Type Unbalanced
Sleeve
Tip
+
TRS Type Balanced
Tip
Ring
Sleeve
+
-
TRS Type Unbalanced
Tip
Ring
Sleeve
+
Either the 1/4" TRS (Tip-Ring-Sleeve) phone jack or the XLR servo connector can be wired in balanced and
unbalanced modes, which will be determined by the actual application status. Please wire your systems as the
following examples:
phone jack to easily interface with most professional audio devices. Follow the configuration examples below