datasheet ax3504
Public Address
40W Amplifier
The AX3504 amplifier has two balanced microphone inputs, one of them with an automatic precedence function
(VOX). Two auxiliary inputs on RCA sockets enable connection to sources of music; there is a selector switch on
the front panel for selecting the desired source. A line output is available for connection in cascade fashion of a
second amplifier or of a recorder, if required.
The equipment has provisions for connecting it to a telephone system by means of a terminal strip. This input,
of the balanced type, has its own level control and has a VOX circuit for broadcasting messages with a higher
priority than any other input (except for the microphone connected via the front panel).
A precedence contact, available on the terminal strip, activates priority of the microphones over the sources of
music and at the same time sends out a warning signal (CHIME). In order to exploit effectively the precedence
function, it is possible to use the B701-M/B701-MG microphone stations. Rack-mounting is possible using
a specific accessory. The output terminal strip enables low-impedance loads (8Ω) or constant-voltage loads
(50, 70 and 100 V) to be connected. Selectable mains power supply (230/115V).
Rev. 1.1
1. MIC.1 VOX activation threshold control.
2. MIC.1 balanced microphone input (with VOX).
3. Microphone input level controls.
4. Auxiliary input level control.
5. Auxiliary input selector.
6. Tone controls.
7. Mains switch.
8. Overload signalling LED. 9. Mains plug with built-in fuse.
10.Frame connection.
11.Loudspeaker output terminal strip.
12.Line output.
13.Auxiliary inputs.
14.MIC.2 balanced microphone input.
15.Adjustment of the level of the warning signal (Chime).
16.Terminal strip for precedence contact.
17.Balanced telephone input.
18.Telephone input activation threshold adjustment.
19.Telephone input level adjustment.
20.Terminal strip for external DC power supply.
21.Mains voltage selector switch.
PASO S.p.A. reserves the right to make changes to drawings and specifications at any time and without notice.
Technical data
Rated power output
40 W
Constant voltage outputs
50 - 70 - 100 V
Low impedance outputs
Distortion at rated output
Tones control
Bass tones @100 Hz
± 10 dB
Treble tones @10 kHz
± 10 dB
MIC.1 microphone input (front panel)
S/N Ratio
Frequency response
1 mV / 1300 W
64 dB
35 ÷ 20.000 Hz
MIC.2 microphone input (rear panel)
S/N Ratio
Frequency response
Phantom supply
1 mV / 1300 W
61 dB
35 ÷ 20.000 Hz
16,5 V
Auxiliary inputs
CD Sensitivity
520 mV
TAPE Sensitivity
250 mV
S/N Ratio
Frequency response
75 dB
30 ÷ 20.000 Hz
Telephone input
S/N Ratio
Frequency response
150 mV / 6 kW
73 dB
170 ÷ 12.000 Hz
Signal outputs
Line OUT
880 mV / 100 W
Operating conditions
230 V ±10% 50/60 Hz Mains power supply
115 V ±10% 50/60 Hz Mains power supply
External DC power supply
P=96W ; A=110 VA
24 V / 2,8 A (0,1 A @ Pout=0 W)
275 x 88 x 230 mm
4,2 kg
Rev. 1.1
P=100W ; A=117 VA
PASO S.p.A. reserves the right to make changes to drawings and specifications at any time and without notice.
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