Adjusting The Output Level - Monacor VCA-202 Mode D'emploi

230 V~/50 Hz
➁
The preamplifier is especially suited for in-
stallation into a rack (482 mm / 19") . If required,
it can also be placed as desired . For rack instal-
lation a height of 1 RS (rack space = 44 .45 mm)
is required .
4 Connection
Always switch off the preamplifier and the units
to be connected before making or changing any
connections!
1) Connect the line audio sources (e . g . CD
player, mixer, tape recorder) to the jacks
INPUT (5) .
2) Connect the power amplifier for the speakers
or another subsequent unit with line input to
the jacks OUTPUT (4) .
3) Connect the control voltages to the screw
terminals* (6) . The cable length and the cross
section of the control cables are uncritical .
If there is no external control voltage, the
output voltage (10 V) provided at the screw
terminals* (7) can be used . For this purpose, it
is recommended to use potentiometers with a
value of 10 kΩ and a linear characteristic (e . g .
VCA-202RN) . Connect the potentiometers
according to fig . 3 .
If a stereo source is connected, the con-
trol inputs (6) of the two channels have to
be connected in parallel according to fig . 4 .
4) Finally connect the plug of the mains cable
(3) to a mains socket (230 V/ 50 Hz) .
VCA CONTROL DC OUT
0 –10VDC 10V/ max.5 mA
CH 2 CH 1
– + – + + +
CH1
CH2
➂ 2-channel mode
* To make handling easier when connecting, the screw ter-
minals can be removed from their plug-in connections .
OUTPUT
3
4
VCA CONTROL DC OUT
0 –10VDC 10V/ max.5 mA
CH 2 CH 1
– + – + + +
➃ stereo mode
INPUT CH 2 OUTPUT
5 4
5 Operation
1) Prior to switching on, the control voltages
should be set to 0 V to prevent loud switch-
ing noise .
2) Switch on the unit with the POWER switch
(1) . The red POWER LED (2) lights up .
3) Switch on the units connected, always switch
on the power amplifier for the speakers last .
4) When switching off the system, always switch
off the power amplifier first .

5.1 Adjusting the output level

The output level is adjusted with a DC voltage .
The control range is between 0 and 10 V, at 0 V
there is no output level . The output level will rise
linearly with the control voltage . The maximum
amplification is 1 (0 dB) and appears at a control
voltage of 10 V .
6 Specifications
Inputs
2 × LINE, mono: . . . . 1 V/ 30 kΩ, bal .
2 × control input: . . . 0 – 10 V (⎓)/ 100 kΩ
Outputs
2 × LINE, mono: . . . . 1 V/ 600 Ω, bal .
1 × auxiliary voltage: . 10 V (⎓)/ 5 mA max .
Frequency range: . . . . . 20 – 20 000 Hz
THD: . . . . . . . . . . . . . . . 0 .1 %
S / N ratio: . . . . . . . . . . . 70 dB, unweighted
Power supply: . . . . . . . . 230 V/ 50 Hz / 10 VA
VCA CONTROL DC OUT
0 –10VDC 10V/ max.5 mA
Ambient temperature: . . 0 – 40 °C
CH 2 CH 1
– + – + + +
Dimensions (W × H × D): . 482 × 48 × 105 mm,
Weight: . . . . . . . . . . . . 1 .5 kg
CH1 + CH2
Subject to technical modification .
All rights reserved by MONACOR
& Co. KG. No part of this instruction manual may be
reproduced in any form or by any means for any com­
mercial use.
INPUT CH 1 VCA CONTROL DC OUT
0 –10 VDC 10 Vmax.
CH2 CH1
5 mA
– + – + + +
5 6 7
1 rack space
CH1
CH2
INTERNATIONAL GmbH
®
7