6
English
1
4
3
2
5
6
8
9
7
➊
➋
If the unit is to be put out of oper-
ation definitively, take it to a local
recycling plant for a disposal which
is not harmful to the environment .
4 Setting Up
The amplifier is designed for installation into a
rack (482 mm /19”), but it can also be placed
on a table . To ensure sufficient cooling, air
must always be able to flow freely through
all air vents .
4.1 Installation into a rack
In the rack, the amplifier requires a height
of 2 RS (1 RS = rack space = 44 .45 mm) . To
prevent the rack from becoming top-heavy,
insert the amplifier into the lower section of
the rack . The front plate alone is not sufficient
for fixing it safely; additionally use lateral rails
or a bottom plate to secure the unit .
The hot air given off by the amplifier must
be dissipated from the rack; otherwise, heat
will accumulate in the rack which may not
only damage the amplifier but also other units
in the rack . In case of insufficient heat dissi-
pation, install a ventilation unit into the rack .
5 Connection
Prior to connecting /disconnecting switch off
all units concerned .
5.1 Audio source
It is possible to connect a stereo audio source
delivering audio signals with line level, e . g .
mixer, preamplifier, CD player . Connect the
output of the audio source to one of the two
pairs of jacks on the connector panel INPUT
(8), either to the XLR jacks or to the RCA jacks:
LEFT = left channel, RIGHT = right channel .
2-Channel Amplifier
These instructions are intended for users
without any specific technical knowledge .
Please read the instructions carefully prior to
operation and keep them for later reference .
1 Operating Elements and
Connections
1
Power LED ON
2
Volume controls, one each for the left and
right channels
3
Overload LEDs CLIP, one each for the left
and right channels
4
POWER switch
5
Mains jack for connection to a socket
(230 V
~
/ 50 Hz) via the mains cable pro-
vided
6
Support for the mains fuse
Always replace a blown fuse by one of the
same type .
7
Clamping screw for ground connection,
if required
8
Connector panel INPUT to connect a ste-
reo audio source with line signal level (e . g .
mixer) via RCA jacks or XLR jacks (bal .)
9
Connector panel OUTPUT to connect the
speakers via terminals or (Speak on
®
com-
patible) speaker jacks – refer to chapter 5 .2
2 Applications
This stereo PA amplifier is designed for PA
applications at events, e . g . performance
on stage . It is suitable for installation into a
rack .
The amplifier is protected against short
circuit and overheating . Furthermore, the
absence of a fan allows for silent operation .
3 Safety Notes
This unit corresponds to all relevant directives
of the EU and is therefore marked with .
WARNING
This unit uses dangerous mains
voltage . Leave servicing to
skilled personnel only and do
not insert anything into the air
vents . Inexpert handling may
result in electric shock .
•
The unit is suitable for indoor use only . Pro-
tect it against dripping water and splash
water, high air humidity and heat (admissi-
ble ambient temperature range: 0 – 40 °C) .
•
Do not place any vessel filled with liquid on
the unit, e . g . a drinking glass .
•
The heat generated inside the unit must be
dissipated by air circulation; never cover the
air vents of the housing .
•
Immediately disconnect the mains plug
from the socket
1 . if the unit or the mains cable is visibly
damaged,
2 . if a defect might have occurred after the
unit was dropped or suffered a similar
accident,
3 . if malfunctions occur .
In any case the unit must be repaired by
skilled personnel .
•
Never pull the mains cable to disconnect
the mains plug from the socket, always
seize the plug .
•
For cleaning only use a dry, soft cloth; never
use water or chemicals .
•
No guarantee claims for the unit and no
liability for any resulting personal damage
or material damage will be accepted if the
unit is used for other purposes than orig-
inally intended, if it is not correctly con-
nected or operated, or if it is not repaired
in an expert way .
English
English Page
Содержание STA-125
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