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The peculiarity of these amplifiers is that they are able to withstand high voltages between the mains
power supply/loudspeaker outputs and the frame, even reaching up to 4 kV. This feature increases
the safety of the system, preventing possible discharges on the mains or on the loudspeakers con-
nections from passing along the audio chain thus causing serious damage or personal injury.
This built-in amplifier has a standard format that enables it to be mounted also inside telephone type
cabinets. The fact that it can be directly wall-mounted using the special backplate enables it to be
used in all situations in which there is little room available.
The input of the amplifier is electronically balanced. For special needs, for example in case of particu-
larly long connecting lines or lines prone to interference, it is possible to isolate the input galvanically
by means of an optional TM92 card equipped with a line transformer.
Each amplifier is equipped with a diagnostics card able to provide a high number of additional fun-
ctions (line impedance measurements, amplifier diagnostics, check of integrity of the loudspeaker
line, volume control, selection of two inputs, failure-signalling relay control, possibility of including a
‘LOW CUT’ filter, operation in the ‘LOW POWER’ energy-saving mode).
In addition to all the operations and/or checks set locally by means of the micro-switches, it will also
be possible to alter all the parameters via the TS485 serial interface.
Models
AXF120-HV
and
AXF240-HV
have four inputs with RJ45 sockets on the lower panel: one
input for a
B711-G
microphone station (BASE) and three auxiliary inputs (AUX1, AUX2 and AUX3).
These inputs, which are electronically balanced, are switched to one another and have their own
order of priority: the BASE input has priority over inputs AUX1/2/3, input AUX1 over AUX2/3 and input AUX2 over AUX3. On each of them, switching
of the inputs takes place by means of a positive power supply from outside. There is a voltage on sockets AUX1/2/3 that is cut off in the event of
failure of the amplifier or if it is switched off. This enables operation of the amplifier to be monitored from a remote station. There is a ‘busy’ signal on
sockets AUX 2 and AUX 3 when the BASE input or the AUX 1 input are active.
AXF120-HV
120 W RMS mixer amplifier, 4 kV insulation
AXF240-HV
240 W RMS mixer amplifier, 4 kV insulation
AWF120-HV
120 W RMS booster unit, 4 kV insulation
AWF240-HV
240 W RMS booster unit, 4 kV insulation
MODEL
AWF120-HV
AWF240-HV
AXF120-HV
AXF240-HV
Rated power output
120 W
240 W
120 W
240 W
Vdc rated power output
90 W (24 Vdc)
150 W (24 Vdc)
90 W (24 Vdc)
150 W (24 Vdc)
Constant voltage outputs / Low impedance outputs
100-70-50 V and 8-4 Ω
Distortion at rated power
< 1 %
Remote control
Serial RS485
Inputs
Balanced, XLR
BASE
AUX1
AUX2
AUX3
Sensitivity
770 mV
400 mV
260 mV
S/N Ratio
> 90 dB
> 85 dB
Frequency response
40 ÷ 30.000 Hz
60 ÷ 19.000 Hz
Secondary input
Balanced with terminals
Sensitivity
720 mV
Frequency response
50 ÷ 18.000 Hz
Distortion
< 0,5%
Mains power supply
230 Vac - 50/60 Hz / 24 Vdc
230 Vac - 50/60 Hz
Maximum consumption
250 W / 300 VA
500 W / 600 VA
250 W / 300 VA
500 W / 600 VA
24 Vdc current consumption (max power / with no signal)
6,5 A
11 A
6,5 A
11 A
Dimensions (W x H x D)
150 x 368 x 150 mm
150 x 365 x 150 mm
Weight
7,4 kg
10,7 kg
7,4 kg
10,7 kg
DIAGNOSTICs
• SPK impedance of loudspeaker line out of spec
• AMP amplifier not working properly
• OVL overloading of loudspeaker line
• HOT thermal overload
AWF/HV and AXF/HV range
|
Industrial amplifiers
4 kV insulation