Nilfisk-ALTO MAC 2.3 - Manual (Page 7)

a. Wiring Configuration
Either the 1/4" TRS (Tip-Ring-Sleeve) phone jack or the XLR servo connector can be wired in balanced and unbal-
anced modes, which will be determined by the actual application status, Please wire your systems as the following
examples:
4. INSTALLATION & CONNECTION
4.1 Mains Connection
Do not insert the power cord into this unit until voltage has been correctly set. Do not plug the power cord into the
mains until the voltage has been correctly set.
Please ensure that the MAC 2.2/2.3/2.4 Professional Stereo
Amplifier is supplied with the correct If you can't power up this unit while turning voltage before turning on this unit.
on the Mains Switch (1), please check the Breaker (6) on the rear panel first, maybe it is pressed to reset. Otherwise,
contact the technician or qualified personnel for any service.
Caution: To reduce the risk of electric shock, do not perform any servicing other than contained in this manual unless
you are qualified to do so.
Please turn off this unit before any installation and connection, esp. when you connect
your unit into the sound system. This is important to prevent damage to the unit itself as well as other consequent
speaker
The mains connection of the MAC 2.2/2.3/2.4 Professional Stereo Amplifier is made by using system.
the enclosed power cord and a standard IEC receptacle, and it meets all of the international safety certification
requirements.
4.2 Rack Mounting
The most secure mounting is on a universal rack shelf available from various rack manufactures or your music
dealer. The MAC 2.2/2.3/2.4 Professional Stereo Amplifier fits into one standard 19" rack unit of space.Be sure
that there is enough air space around the unit for sufficient ventilation. If heat release is inadequate, this unit
will retain heat inside, which may cause the protection, or even a fire.
4.3 Audio onnection C
The presents with balanced XLR connectors and 1/4" TRS 2.2/2.3/2.4 LTO MAC Professional High Power Amplifier
phone jack and it can be interfaced by several ways to support a variety of applications without any signal loss.
13. Fan
This fan release the heating from the unit by accelerating the air circulation (air flowing from front to back), and
the speed is continuously variable.
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b. In Line Connection
For these applications, the provides XLR con 2.2/2.3/2.4 nectors and 1/4" TRS phone jack to MAC stereo power amplifier
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
TRS Type Balanced TRS Type Unbalanced
Sleeve
Tip
+
Tip
Ring
Sleeve
+
-
Tip
Ring
Sleeve
+
In this mode, CHA input signal will be output from the bridge output connector, detail wiring diagram you can
refer to chapter 5.
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