Front Panel; Rear Panel; Safety Notes; Applications - Monacor STA-1004 Mode D'emploi

4-Channel PA Amplifier
These instructions are intended for experts with adequate knowledge in
speaker and PA technology . Please read the instructions carefully prior to
installation and keep them for later reference . All operating elements and
connections described can be found on the fold-out page 3 .
1 Operating Elements and Connections

1.1 Front panel

1 LED OVERHEAT, lights up when channels 1 and 2 are overheated
2 LED OVERHEAT, lights up when channels 3 and 4 are overheated
3 LEDs CLIP/ LIMITER
Limiter switched on: LED lights up when the limiter reduces the
Limiter switched off: LED lights up in case of overload of the corre-
4 LEDs SIGNAL, light up when the output signal of the corresponding
channel exceeds 100 mW
5 POWER LEDs
6 Level controls, the functions of these controls depend on the operating
mode selected, see table 1
7 POWER switch
Table 1 Function ot the level controls CH 1 ... CH 4
Control
Fig. Mode CH 1
individual
3 channel 1
operation
4 channel group channel 1
5 stereo, parallel speaker left 1
6 stereo bridge left channel
7 mono bridge speaker 1
mid-high range
8 Bi-Amping
speaker L
mid-high range
9 Tri-Mode
speaker L
– = control without function

2 Safety Notes

This 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 any-
thing into the air vents; inexpert
handling may result in electric
shock .
•
The unit is suitable for indoor use only . Protect
it against dripping water and splash water,
high air humidity, and heat (admissible am-
bient temperature range 0 – 40 °C) .
•
Do not place any vessels filled with liquid, e . g .
drinking glasses, on the unit .
•
The heat produced inside the unit must be
dissipated by air circulation; therefore, never
cover the air vents .
•
Do not set the unit into operation, or imme-
diately disconnect the mains plug from the
mains socket if
1 . there is visible damage to the unit or to the
mains cable,
2 . a defect might have occurred after a drop
or similar accident,
3 . malfunctions occur .
The unit must in any case be repaired by
skilled personnel .
•
A damaged mains cable must only be replaced
by specialized personnel .
8
volume of the corresponding channel
sponding channel
CH 2 CH 3
channel 2 channel 3
channel 2 channel 3
speaker right 1 speaker left 2
– right channel
– speaker 2
mid-high range bass speaker
speaker R left
mid-high range
subwoofer
speaker R
•
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 unit and no liabil-
ity for any resulting personal damage or mate-
rial 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 .
•
Important for U. K. Customers!
The wires in the mains lead are coloured in
accordance 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, proceed as follows:
1 . The wire which is coloured green and yel-
low must be connected to the terminal in
the plug which is marked with the letter
E or by the earth symbol
green or green and yellow .
2 . The wire which is coloured blue must be
connected to the terminal which is marked
with the letter N or coloured black .
3 . The wire which is coloured brown must be
connected to the terminal which is marked
with the letter L or coloured red .
Warning – This appliance must be earthed.

1.2 Rear panel

8 Switches for adjusting the different operating modes, see table 2
9 Control for adjusting the crossover frequency
The control is effective only in the operating modes Bi-Amping and
Tri-Mode .
10 Switches for the limiter function
11 Mains cable for connecting 230 V/ 50 Hz
12 Inputs via XLR jacks, balanced
13 Inputs via 6 .3 mm jacks, unbalanced
14 Outputs for connecting the speakers
Switch LINK 2 + 4
Fig. Mode
individual
3
operation
CH 4
4 channel group
channel 4
5 stereo, parallel
channel 4
6 stereo bridge
speaker right 2
–
7 mono bridge
–
bass speaker
8 Bi-Amping
right
– 9 Tri-Mode
= switch unlocked,
, or coloured
Table 2 Selection of the operating mode
SUBWOOFER /
MODE B LINK 1 + 3
CROSSOVER
SOLO STEREO SOLO OTHER
2 STEREO 1 OTHER
2 STEREO 1 OTHER
–
BRIDGE 3+4 SOLO OTHER
–
BRIDGE 3+4 1 OTHER
– – –
CROSSOVER
– – –
SUBWOOFER
switch looked, – = switch without function
If the unit is to be put out of operation
definitively, take it to a local recycling
plant for a disposal which will not be
harmful to the environment .

3 Applications

This amplifier with a peak power of 1400 W
has specially been designed for stage and disco
applications . Extensive protective circuits are pro-
vided to protect the amplifier and the speakers
connected .
The amplifier is able to drive four full range
speakers . The integrated crossover network also
allows to set up an active two-way system with
two mid-high range speakers and two bass
speakers or a subwoofer . To increase the out-
put power, channels 1, 2 and /or 3, 4 are able
to drive one speaker each in bridge operation .
4 Installation
The amplifier is designed for installation into
a rack (482 mm / 19"), however, it can also be
used as a table-top unit . In any case, air must be
allowed to pass through all air vents to ensure a
sufficient cooling of the amplifier .

4.1 Rack installation

For rack installation, 2 rack spaces (2 RS = 89 mm)
are required .
To prevent the rack from becoming top-
heavy, insert the amplifier into the lower section
of the rack . The front plate is not sufficient for
LINK 1 + 2 MODE A
SOLO STEREO
1 STEREO
SOLO STEREO
–
BRIDGE 1+2
–
BRIDGE 1+2
– –
– –