IMG STAGELINE AKB-50 Manual De Instrucciones página 5

Please unfold page 3. Then you can always see the
operating elements and connections described.
1 Operating Elements and Connections
1 Overload display CLIP
2 Level control for the input signal
3 On/Off switch with power LED
4 Fuse T 250 mA; replace a blown fuse only by one
of the same type
5 Mains connection 230 V~/50 Hz
6 XLR input (balanced)
7 XLR output (balanced)
8 Phono input (unbalanced)
9 Phono output (unbalanced)
2 Safety Notes for the Assembly
This appliance corresponds to the EC directives
73/23/EEC for low-voltage appliances and 89/336/
EEC for electromagnetic compatibility.
In order for the module to fulfill these directives during
operation it is necessary that:
1. it is installed in a shielded housing,
2. the distance of all parts having a voltage of more
than 42 V and which are not isolated must be at
least 8 mm away from the metal housing.
Should one of these directives not be followed, the
conformity declaration will expire.
Observe in any case the following items as well:
Only use the unit indoors. Protect it against humidity
and heat (admissible ambient temperature range
0 – 40 °C).
Do not set the unit into operation or immediately dis-
connect the mains plug from the mains socket if
1. damage at the unit or mains cable can be seen,
2. a defect might have occured after a drop or simi-
lar accident,
3. there are malfunctions.
The unit must in any case be repaired by authorized
skilled personnel.
Never pull the mains plug out of the mains socket by
means of the mains cable.
For cleaning only use a dry, soft cloth, by no means
chemicals or water.
If the module is used for other purposes than orig-
inally intended, if it is not connected or operated in
the correct way or not repaired by authorized per-
sonnel, no liability for any damage will be accepted.
If the unit is to be put out of operation definitively,
take it to a local recycling plant for disposal.
Important for U. K. Customers!
The wires in this mains lead are coloured in accord-
ance with the following code:
green/yellow = earth, blue = neutral, brown = live
As the colours of the wires in the mains lead of this
appliance may not correspond with the coloured
markings identifying the terminals in your plug, pro-
ceed as follows:
1. The wire which is coloured green and yellow must
be connected to the terminal in the plug which is
marked with the letter E or by the earth symbol
or coloured green or green and yellow.
2. The wire which is coloured blue must be con-
nected to the terminal which is marked with the
letter N or coloured black.
3. The wire which is coloured brown must be con-
nected to the terminal which is marked with the
letter L or coloured red.
Warning – This appliance must be earthed.
3 Applications
The AKB-50 module is a completely assembled ampli-
fier with power supply and is designed for being in-
stalled in a 8 Ω speaker cabinet. It is very simple to
build an active speaker cabinet with this module. You
only need to connect the speakers to the module. The
input signal can be fed through via the input and out-
put jacks so that it is possible to operate several active
speakers in parallel.
4 Assembly
1) For the assembly of the module a cutout of 120 x
155 mm is required. Fasten the module to the cabi-
net using 8 screws.
2) Only 8 Ω speakers resp. speaker systems with an
impedance of 8 Ω may be connected. Connect the
speaker resp. the speaker crossover network to the
speaker connection cable of the module via a
connection block. Watch the correct polarity, i. e.
connect the marked wires of the speaker and the
module with each other.
5 Connection
1) Only after the assembly and connection of the
module in the speaker cabinet have been com-
pleted, connect the cabinet with the enclosed
mains cable to the mains socket (230 V~/50 Hz).
2) Connect the signal source (mixing console, pre-
amplifiers, etc.) to the phone input IN (8) resp. to
the balanced XLR input IN (6). The connections of
the XLR jacks are:
1 = ground, 2 = positive pole, 3 = negative pole
3) If further active speaker cabinets are used, the
input of a cabinet can be connected to the phone
jack OUT (9) or to the XLR jack OUT (7).
6 Switching on and Level Adjustment
1) In order not to obtain the full volume when switch-
ing on, at first switch on the signal source and
adjust it to a low volume. Turn the LEVEL control (2)
at the active cabinet to mid-position. Only after that
switch on the cabinet with the POWER switch (3).
2) With the LEVEL control (2) the volume of the active
cabinet is matched to the complete speaker
system. This control does not change the volume of
further active cabinets which are connected via the
output jacks (7) or (9).
3) If the speaker system is overdriven at greatest
volume, the CLIP LED (1) will light. Reduce the
input level with the LEVEL control (2).
7 Specifications
You will find the specifications on page 14. They corre-
spond to those of the manufacturer.
,
Subject to technical changes.
GB
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