Adjusting The Crossover Frequency; Tampering Protection; Protective Circuit - Monacor STA-1004 Manual De Instrucciones

100 mW, the corresponding green LED SIGNAL
(4) will light up . In case of overload, the red LED
CLIP/ LIMITER (3) will light up . In this case, reduce
the volume with the corresponding control .
With the limiter switched on (see chapter
6 .1), the red LED CLIP/ LIMITER will light up if
the limiter reduces the volume . In this case, it is
not necessary to turn back the corresponding
level control unless the LED lights permanently .
6.4 Adjusting the crossover frequency
With the operating mode Bi-Amping or Tri-Mode
selected, the crossover frequency for the bass
speakers or for the subwoofer must be adjusted,
i . e . the frequency which can still be reproduced
by the speakers (see the specifications of the
bass speakers or the subwoofer) . Use a screw-
driver to adjust the control CROSSOVER FRE-
QUENCY (9) to the corresponding frequency .

6.5 Tampering protection

To prevent unintentional or deliberate modi-
fication to the adjustments made, the unit is
supplied with a cover for the controls (6) on the
front panel and with a cover for the switches (8)
and the control (9) on the rear panel . These cov-
ers can be placed over the operating elements
and fastened by means of the supplied screws .

7 Protective Circuit

To protect the power amplifiers of the amplifier
and the speakers connected, protective circuits
are provided which will respond:
– in case of overload or short circuit at the out-
puts
– in case of overheating of the amplifier
When channels 1 and 2 are overheated, the left
LED OVERHEAT (1) will light up and the two
power amplifiers will be switched off . When
only channels 1 and 2 are overheated, channels
3 and 4 will continue to operate .
When channels 3 and 4 are overheated, the
right LED OVERHEAT (2) will light up and the two
power amplifiers will be switched off . When only
channels 3 and 4 are overheated, channels 1
and 2 will continue to operate .
To continue operation, either reduce the output
power or improve the ventilation of the ampli-
fier . After the corresponding channels have been
cooled down to normal operating temperature,
they will resume operation .
All rights reserved by MONACOR
may be reproduced in any form or by any means for any commercial use.
8 Specifications
Output power
4 Ω operation: . . . . . .4 × 250 W RMS
8 Ω operation: . . . . . .4 × 160 W RMS
8 Ω bride operation: . .2 × 500 W RMS
max . total power: . . . .1400 W
Inputs
XLR, balanced: . . . . . .1 .23 V/ 30 kΩ
6 .3 mm jack, unbal .: . .1 .23 V/ 14 kΩ
Frequency range
for 1-way operation: . . .20 – 20 000 Hz,
Crossover frequency
for 2-way operation: . . .50 – 2500 Hz adjusta-
THD: . . . . . . . . . . . . . . .< 0 .1 %
S / N ratio: . . . . . . . . . . .> 80 dB
Crosstalk attenuation: . .> 60 dB
Power supply: . . . . . . . .230 V/ 50 Hz
Power consumption: . . .1800 VA max .
Ambient temperature: .0 – 40 °C
Dimensions (W × H × D): .482 × 89 × 410 mm,
Weight: . . . . . . . . . . . .16 .2 kg
Subject to technical modification .
INTERNATIONAL GmbH & Co. KG. No part of this instruction manual
®
+0 /−0 .5 dB
ble, 24 dB / octave
2 RS (rack spaces)
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