General Description; Features; Handling Precautions - Toa 800D Series Operating Instructions Manual

3. GENERAL DESCRIPTION

TOA's 800D Series mixer amplifier is a PA amplifier equipped with 4 microphone inputs, 2 auxiliary inputs, and
2 slots dedicated to the 900 Series modules. It employs a PFC circuit.
It also features the following functions: Volume control function, Priority function, Chime function, and Remote
confirmation function.
In addition, it is equipped with a 2-channel input BUS of AUDIO and DUCK, and the signal processing function.
The 800D Series mixer amplifier is ideal for paging announcement and BGM applications in schools, offices,
and super markets.

4. FEATURES

• 3 kinds of power amplifier outputs: 120 W (A-812D), 240 W (A-824D), and 480 W (A-848D)
• 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
• Priority setting function
• Remote confirmation function that allows you to confirm the unit's status through the web browser using a PC
• Switchable speaker output ("4 Ω" or "70 V line")
• Module slots provided for mounting up to 2 units of 900 Series modules
• Electronically-balanced 4 microphone inputs (MIC 1 to MIC 4) with Input setting switches
• Fine sound adjustment possible by connecting a signal processor like an equalizer between the pre-amplifier
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
• Remotely controllable master volume
• Built-in chime unit (1-note chime, 2-note chime, and ascending 4-note chime)
• Equipped with the following signal processing functions:
Dynamic feedback filters, Equalizer (3 points), Gate, Software volume, Limiter, and Ducker

5. HANDLING PRECAUTIONS

• In this system, settings and control of the unit are performed on a PC via LAN (Local area network). It is not
possible to perform them via the Internet.
• 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)
6
LED lighting state
CPU From
RUN Speaker
output
Unlit Unlit Disabled
Unlit Lit Disabled
Lit Lit Enabled
Normal broadcast Priority broadcast/
Emergency broadcast
From
Recording
output
Disabled Disabled
Disabled Occasionally possible
( Power is temporarily
Enabled Enabled
turned ON.)
Web
access
Disabled
Enabled
Enabled