IMG STAGELINE STA-600 Manual De Instrucciones página 6

PA Stereo Amplifier
These instructions are intended for users without
any specific technical knowledge . The speakers,
however, should only be connected by persons
with the corresponding technical knowledge .
Please read these instructions carefully prior to
operation and keep them for later reference .
All operating elements and connections
described can be found on page 2 .
1 Overview
1.1 Front panel
1 Volume control for the left channel L-CH
2 Status LEDs for the left channel:
PROTECT lights up with activated protective
circuit (the connection to the speakers is
separated):
1 . after switching-on for a short time
2 . in case of overload /overheating (e . g . also
by short circuit at the output)
3 . in case of DC voltage at the output
LIMITER lights up when the input signal is
too high and limited by the limiter
ACTIVE lights up as a power indication
−25 dB, −20 dB, −15 dB show the input
level
3 LC display for operating mode and temper-
atures
4 Status LEDs for the right channel (
5 Volume control for the right channel R-CH
6 POWER switch
1.2 Rear panel
7 Balanced inputs: XLR jacks for the left chan-
nel (L-CH) and the right channel (R-CH)
8 Balanced inputs: 6 .3 mm jacks for the left
channel (L-CH) and the right channel (R-CH)
9 DIP switches for selecting the operating
mode and for separating signal ground and
housing ground:
operating mode STEREO
operating mode PARALLEL
operating mode BRIDGE
signal ground connected to
housing ground
signal ground and
housing ground separated
(groundlift)
10 Switch FILTER with three positions
SUBWOOFER: low pass filter
with −6 dB at 120 Hz
SATELLITE: high pass filter
with −6 dB at 120 Hz
FULLRANGE: no filter
11 Speaker output: Speakon jack, depending
on plug configuration for the left channel,
the right channel, or for bridge mode
12 Speaker output: Speakon jack for the right
channel
13 Speaker outputs: screw terminals
14 Only for models STA-600 and STA-1000:
Support for the mains fuse
Replace a blown fuse by one of the same
type only .
6
15 Only for model STA-1400:
Protective switch to protect the device; to
reset the released switch, press down the
button
16 Mains jack for connection to a socket (230 V /
50 Hz) via the supplied mains cable
2 Safety Notes
The device corresponds to all relevant directives
of the EU and is therefore marked with
The device corresponds to the relevant UK leg-
islation and is therefore marked with UKCA .
WARNING The device is supplied with haz-
ardous mains voltage . Leave ser-
vicing to skilled personnel only
and do not insert anything into
the air vents! Inexpert handling
may result in electric shock! .
There is a hazard of contact at the speaker
connections with a dangerous voltage during
operation . All connections must only be made
or changed with the device switched off .
•
The device is suitable for indoor use only .
Protect it against dripping water and splash
water, high air humidity, and heat (admissible
ambient temperature range 0 – 40 °C) .
•
Do not place any vessels filled with liquid, e . g .
drinking glasses, on the device .
•
☞ item 2)
The heat being generated in the device must
be dissipated off by air circulation . Therefore,
the air vents at the housing must not be cov-
ered .
•
Do not set the device into operation, and im-
mediately disconnect the mains plug from the
mains socket if
1 . there is visible damage to the device or to
the mains cable,
2 . a defect might have occurred after a drop
or similar accident,
3 . malfunctions occur .
The device must in any case be repaired by
skilled personnel .
•
Never pull the mains cable to disconnect the
mains plug from the mains socket, always
seize the plug .
•
For cleaning only use a dry, soft cloth, never
use chemicals or water .
•
No guarantee claims for the device and no
liability for any resulting personal damage or
material damage will be accepted if the de-
vice is used for other purposes than originally
intended, if it is not correctly connected or op-
erated, or if it is not repaired in an expert way .
If the device is to be put out of opera-
tion definitively, dispose of the device
in accordance with local regulations .
3 Applications
This PA stereo amplifier has especially been
designed for stage and disco applications . The
amplifier may be operated in stereo mode, in
mono parallel mode, or in mono bridge mode .
Due to a switchable filter, the amplifier may
also be used only for subwoofers or only for
the frequency range exceeding 120 Hz . Extensive
protective circuits protect the amplifier and the
speakers connected . Two powerful, tempera-
ture-controlled fans supply the necessary cooling
of the amplifier .
4 Setting-Up
The amplifier is provided for installation into a
rack (482 mm / 19"), but it may also be used as
a table top device . In each case air must be al-
lowed to flow freely through all ventilation vents
so that a sufficient cooling is ensured .
4.1 Rack installation
For rack mounting, 2 U (rack units) = 89 mm are
required . The heated air blown out by the am-
.
plifier at the rear must be able to dissipate from
the rack, otherwise a heat accumulation will
occur in the rack which may not only damage
the amplifier but also other devices in the rack .
In case the heat is not dissipated sufficiently, a
fan unit has to be inserted into the rack .
To prevent top-heaviness of the rack, the
amplifier must be inserted in the lower part
of the rack . To ensure a safe fixing, the front
panel alone is not sufficient . In addition, the
device must be fastened at the rear side or be
supported by means of lateral rails or a bottom
plate .
5 Connecting the Amplifier
All connections must only be made or changed
with the device switched off!
5.1 Inputs
Connect the output of a preamplifier or mixer
to the XLR jacks or 6 .3 mm jacks INPUTS (7, 8) .
Both jacks are designed for balanced signals; the
pin configuration is shown in fig . 2 . However,
also sources with unbalanced signals may be
connected . For this purpose, the connection to
the 6 .3 mm jacks can easily be made via 2-pole
6 .3 mm plugs .
– The input signal should have line level . For
rated power of the amplifier, an input signal
of 1 V is required as a minimum .
– For bridge mode or parallel mode, only con-
nect the input of the left channel L-CH .
– The XLR jack (7) is in each case directly con-
nected to the 6 .3 mm jack (8) of the same
channel . Thus, when connecting the signal
source to a jack, the signal of the other jack
can be picked up to feed it e . g . to an addi-
tional amplifier .
5.2 Speakers
The maximum output power is reached in stereo
mode and in parallel mode when connecting 4 Ω
speakers (minimum admissible load impedance) .
It is also possible to connect 8 Ω speakers, how-
ever, in this case the output power will slightly
decrease . In bridge mode, the maximum out-
put power will be reached with an 8 Ω speaker
(minimum admissible load impedance in bridge
mode) . The required power rating (P
speakers is listed in the table fig . 3 .
Connect the speakers to the Speakon jacks
(11, 12), pin configuration of the plug see fig . 2,
or to the screw terminals (13) . When connecting
the speakers, pay attention to the same polarity
of all speakers .
After connecting a Speakon plug to the jack,
turn it clockwise until it locks . For removing it
later, retract the lock latch at the plug and turn
the plug counter-clockwise .
If the screw terminals are used, ensure that
the cable ends are not stripped too far and that
no bare wires protrude (hazard of contact and
short circuit) .
The Speakon jack of the output L-CH (11) is
additionally provided with the signals of the right
) of the
min