IMG STAGE LINE STA-300D, Instruction Manual

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6
English
R-CH L-CH
PROT
0 10
ON
CLIP
SIGNAL
POWER
0 10
STA-500D
DIGITAL STEREO PA AMPLIFIER
600W
1 2 3 4 5 6 2
2 1
3
PUSH
2 1
3
PUSH
INPUT
RIGHT LEFT
STEREO
BRIDGE
MODE
OFF
ON
LIMITER
+ TIP / PIN 2
– RING / PIN 3
SLEEVE / PIN 1
FUSE
230 V~/
50 Hz
LEFT RIGHT
OUTPUT
MIN. LOAD 4 Ω
+ TIP
– RING
+ TIP
– RING
+ TIP / PIN 2
– RING / PIN 3
SLEEVE / PIN 1
7 8 9 10 8 9 11 12 11 13 14
• The heat produced inside the unit must
be dissipated by air circulation; therefore,
never cover the air vents of the housing .
•
Do not operate the unit and 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 for disconnect­
ing 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 li­
ability for any resulting personal damage or
material damage will be accepted if the unit
is used for other purposes than originally
intended, if it is not correctly connected
or operated, or if it is not repaired in an
expert way .
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 Installation into a Rack
The amplifier is designed for installation into a
rack (482 mm /19”); 1 rack space (44 .45 mm)
is required . To prevent the rack from becom­
ing top­heavy, insert the amplifier into the
lower section of the rack . The front plate is
not sufficient for fixing the amplifier safely;
additionally use lateral rails or a bottom plate
to secure the amplifier .
To ensure sufficient cooling, air must be
able to flow freely through all air vents of the
amplifier . 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
dissipation, install a ventilation unit into the
rack .
Stereo PA Amplifier
These instructions are intended for users with­
out specific technical knowledge . Please read
these instructions carefully prior to operating
the unit and keep them for later reference .
1 Operating Elements and
Connections
1
POWER switch
2 Volume controls, one each for the left and
right channels
3 Signal indicators SIGNAL (depending on
the setting of the volume control), one
each for the left and right channels
4 Power indicator ON
5
LED PROT, will light up when the protection
circuit is activated and for a few seconds
after the amplifier has been switched on
6 Overload LEDs CLIP, one each for the left
and right channels
7 Switch MODE for the operating mode
disengaged: 2­channel mode STEREO
engaged:
bridge mode BRIDGE
8 XLR inputs to connect an audio source
with line signal level (e . g . mixer), one each
for the left and right channels
2 1
3
PUSH
1 Ground
2
3 Signal −
9 6 .3 mm jacks, one each for the left and right
channels, to connect an audio source, as an
alternative to the corresponding XLR jack
2 3 1
The contacts are connected in parallel to
the contacts of the XLR jack (8)
10 Switch LIMITER for the automatic level
limiter
disengaged: level limiter off
engaged:
level limiter on
11 6 .3 mm jacks, one each for the left and
right channels, to connect a speaker
+ −
12 Speaker jacks (Speakon
®
compatible), con­
nected in parallel to the 6 .3 mm jacks (11)
Pin configuration:
1+
2−
1−
2+
OUTPUT LEFT RIGHT
1+ L + R +
1− L − R −
2+ R + —
2− R − —
Please also refer to chapter 5 .2 .
13 Support for the mains fuse
Always replace a blown fuse by one of
the same type .
14 Mains jack for connection to a socket
(230 V~/ 50 Hz) via the mains cable sup­
plied
2 Applications
This stereo PA amplifier is designed for PA
applications at events, e . g . performances on
stage . It provides a switchable level limiter
to reduce distortions at high volumes and to
protect the speakers . In addition, it is possible
to switch to the monophonic bridge mode to
obtain higher output power .
Designed as a class D amplifier and fea­
turing a switch­mode power supply, the
amplifier is both compact and light . The am­
plifier is protected against short­circuit and
overheating .
3 Safety Notes
The unit corresponds to all relevant directives
of the EU and is therefore marked with .
WARNING The unit uses dangerous
mains voltage . Leave servicing
to skilled personnel 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 (admis­
sible ambient temperature range 0 – 40 °C) .
• Do not place any vessels filled with liquid
on the unit, e . g . a drinking glass .
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