Autronica AutroVoice miniVES 2001, Service Manual

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6.1.3 Built in amplifier modules
The AutroVoice miniVES systems are equipped with built in amplifier modules. This enables standalone operation
as a complete VAS system.
5.
Built in amplifier module options:
1. 2001 series units use two 160 W amplifier modules and a single switchable transformer. This enables one of the amplifiers
to work as the main unit while the second one provides redundancy
2.
4001 series
units use two 320 W amplifier modules with two transformers. This enables one of the amplifiers to work as the
main unit while the second one provides redundancy
3. 4002 series units use two 320 W amplifier modules with two transformers. This enables both of the amplifiers to work
either simultaneously with the total output limited to 320 W or with one used as main and the other one as backup.
Ensure that the volume level of audio sources is set to minimum and the loudspeakers and all equipment are connected properly
before turning the amplifier on.
CAUTION: The system is activated about 3 seconds after turning the device on. This is the regular operation of the amplifier that
results from work of embedded automatic protection of circuits, loudspeakers and other connected components.
6.1.3.1 Technical details
Table 7. Technical specifications of amplifier modules
Model 160 W 320 W
Specifications
Type Class D Class D
Audio channels 1 1
Output voltage 50 V, 100 V 50 V, 100 V
Power supply DC DC
Power supply voltage 48 V (42-57 VDC) 48 V (42-57 VDC)
Rated load 62,5 Ω + 200 nF 31,25 Ω + 200 nF
Pass band (-3 dB) 75 Hz – 20 kHz 75 Hz – 20 kHz
Channel separation >70 dB >70 dB
Signal to noise ratio SNR >80 dB (curve A) >80 dB (curve A)
Total harmonic distortion THD
(rated load / 1 kHz)
0,01% 0,01%
Drawing 19.