Instrukcja obsługi TOA P-912MK2

TOA odbiornik P-912MK2

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TOA 900 SERIES II
POWER AMPLIFIER
Operating Instructions
P-906MK2
P-912MK2
P-924MK2
P-906MK2
P-912MK2
P-924MK2
TO REDUCE THE RISK OF ELECTRICAL
SHOCK, DO NOT REMOVE COVER.
NO USER SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.
THE LIGHTNING FLASH WITH
ARROWHEAD WITHIN A TRIANGLE IS
INTENDED TO TELL THE USER THAT
PARTS INSIDE THE PRODUCT ARE A
RISK OF ELECTRIC SHOCK TO
PERSONS.
THE EXCLAMATION POINT WITHIN A
TRIANGLE IS INTENDED TO TELL
THE USER THAT IMPORTANT
OPERATING AND SERVICING
INSTRUCTIONS ARE IN THE PAPERS
WITH THE APPLIANCE.
Please follow the instructions in this manual to obtain the optimum results from this unit.
We also recommend that you keep this manual handy for future reference.
TOA Corporation
Contents
General description
Features
Nomenclature
Front panel
Rear panel
Input connections
Output connections
Rack mounting
Operation
Volume adjustment
Installation
Servicing
Specifications
Appearance (P-906MK2/P-912MK2)
Appearance (P-924MK2)
2
2
3
4
5
6
7
8
8
8
8
9
10
11
General Description
The TOA P-906MK2, P-912MK2 and P-924MK2 Power Amplifiers deliver up to 60 watts, 120 watts and 240
watts of power respectively at less than 0.5% total harmonic distortion (THD) from 20 to 20,000 Hz
(transformerless 4-ohm output). The power amplifiers have a high-impedance direct input and an input port
(edge connector) to accept one plug-in module. Module selection is determined by application among the
TOA plug-in modules.
The power amplifiers have a low-cut switch for a cutoff frequency of 60 Hz, and an input-level switch for input
sensitivity of 1V (0 dBV) or 100mV (–20 dBV). Output terminals provide connections for 4-ohm and 8-ohm
speakers, plus 25-volt and 70-volt speaker distribution outlets. With plug-in modules, the power amplifiers
may be used as a PA amplifier.
The power amplifiers can be rack mounted by using optional rack mounting bracket MB-25B(P-906MK2,
P-912MK2) and MB-35B(P-924MK2). The optional perforated panel PF-511 provides suitable ventilation,
finished in color to match the power amplifiers.
Features
1. Wide frequency response : 20 ~ 20,000 Hz ± 1 dB
2. Low distortion and noise level
3. Excellent output regulation
4. A full range of plug-in modules
5. Self-protecting circuitry design
6. Varied output impedances : 4 ohms, 8 ohms, 25 and 70 volts
7. Input level switch (selectable 1000 mV/100 mV)
8. Portable or rack mounting type
– 2 –– 2 –
Nomenclature
Front Panel
P-906MK2, P-912MK2
P-924MK2
Power Switch
Applies line power. Two-position push button
switch for on/off modes.
Power Indicator LED
Green LED lights when the power is switched
"ON".
Signal Indicator LED
Green LED lights when more than -30 dB signal
level is fed to the inputs by means of the master
volume control.
Normal Indicator LED
Yellow LED lights when fed to the proper signal
level.
Peak Indicator LED
Red LED lights when amplifier approaches
clipping level. If steady lit, the input level control
should be turned down until the LED flashes.
Protection Indicator LED
Remains lit for about 5 seconds after power
switch is turned ON.
Master Volume Control
Adjust gain of input.
– 3 –

Specyfikacje produktu

Marka: TOA
Kategoria: odbiornik
Model: P-912MK2

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