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2. GENERAL DESCRIPTION
TOA's A-3500D Series is a PA amplifier equipped with 4 microphone inputs and 1 auxiliary input, and 2-channel
zone selector.
In addition to each individual input volume control function, it is equipped with the Priority broadcast function.
Also, the PFC circuit is provided inside.
The A-3500D Series mixer amplifier is ideal for paging announcement and BGM applications in schools, offices,
and super markets.
3. FEATURES
• 4 kinds of power amplifier outputs: 60 W (A-3506D), 120 W (A-3512D), 240 W (A-3524D), and 480 W (A-3548D)
• Lightweight owing to the built-in digital power amplifier unit
• Emergency broadcast and priority broadcast activated by way of the control input (contact)
• Voice detection function that allows the priority broadcast to be activated by voice
• Remote confirmation function that allows you to confirm the unit's status through the web browser using a PC
• Switchable speaker output
A-3506D:
A-3512D, A-3524D, A-3548D: 4 to 16 Ω or 100 V line
• Zone selection buttons for making broadcasts to 2 zones
• Electronically-balanced microphone inputs (Inputs 1 to 4) and phantom power available of Microphone inputs
1 and 2.
• Fine sound adjustment possible by connecting a signal processor like an equalizer between the line output
and the power amplifier input
• Bass and treble tone control knobs
• Output level meter
• Master volume control knob to simultaneously adjust all input levels
4. HANDLING PRECAUTIONS
Some operations differ depending on this unit's power ON/OFF state. The table below shows the relationship
between the power ON/OFF state and the corresponding operation.
Power state
Not energized
Energized
(Power turned OFF)
Energized
(Power turned ON)
8 to 16 Ω or 100 V line
Normal broadcast
From Speaker
output
Unlit
Disabled
Unlit
Disabled
Lit
Enabled
Priority broadcast/Emergency
From Recording
broadcast
output
Disabled
Disabled
Disabled
Occasionally possible
( Power is temporarily turned ON.)
Enabled
Enabled
5
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