Page 1
OPERATING MANUAL
POWER
AMPLIFIER
PA-920D
Page 2
11
UNPACKING AND INSTALLATION
Although it is neither complicated to install nor difficult to operate your power Amplifier, a few
minutes of your time is required to read this manual for a properly wired installation and becoming
familiar with its many features and how to use them. Please take a great care in unpacking your set
and do not discard the carton and other packing necessary to return your set for when moving your
set and are required if it ever becomes necessary to return your set for service. Never place the unit
near radiators, in front of heating vents, to direct sun light, in excessive humid or dusty location to
avoid early damage and for your years of quality use. Connect your complementary components as
illustrated in the following page.
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK.
DO NOT REMOVE COVER (OR BACK).
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
WARNING
To prevent fire or shock hazard, do not
expose the unit to rain or moisture.
This symbol is intended to alert the user to the
presence of uninsulated “dangerous voltage”
within the product’s enclosure that may be of
sufficient magnitude to constitute a risk of electric
shock to persons.
This symbol is intended to alert the user to the
presence of important operation and maintenance (servicing) instructions in the literature
accompanying the appliance.
Caution: To prevent electric shock do not use this (polarized) plug
with an extension cord, receptacle or other outlet unless
the blades can be fully inserted to prevent blade exposure.
Attentions: Pour prévenir les chocs électriques ne pas utiliser cette
fiche polarisée avec un prolongateur, une prise de
courant on une autre sortie de courant, sauf si les
lames peuvent étre insérées à fond sans en laisser
aucune partie à découvert.
Page 3
22
FEATURES
• POWER RA TING
Amplifier P A-920D are high performance with an integrated 20 watt commercial amplifier.
• VERSATILE AND CONVENIENT
3 channel of inputs Mic 1, Mic 2 and AUX are provided for versatile and convenient use. Mic and
AUX input has both PL55 phone jack.
Telephone input have screw terminal.
• TONE CONTROL
The 2 band tone control are designed for ±12dB control.
• MUTING FOR PRIORITY
MIC 1 and TELEPHONE IN has priority to the other signal, you can adjust the mute level as
adjusting volume of rear panel.
Page 4
33
FRONT PANEL CONTROLS
1. POWER INDICA TOR
Power indicating LED is driven by power switch, and the LED illuminates when the powered
speaker is power ON.
2. MIC LEVEL CONTROL
Mic level control is provided these system, clockwise rotation of the controls increase level.
3. AUX LEVEL CONTROL
Aux level control is provided these system, clockwise rotation of the controls increase level.
4. TONE CONTROLS
The tone control section provides ±12dB of control over the TREBLE and BASS ranges at the
following center frequencies.
TREBLE: 10KHz
BASS : 100Hz
5. MASTER CONTROL
This control is used for adjusting the volume of finally mixed sound.
6. POWER SWITCH
The power switch is used to turn on and off the AC main power.
AMPLIFIER
PA-920D
MIC 1
MIC 25AUX5BASS
TREBLE
-12
+12
-12
+12
POWER
OFF
POWER
54321010987654321010987654321010987600108642020181614
12
MASTER VOLUME
ON
44 532 1
6
Page 5
44
REAR PANEL CONTROLS
1. AC POWER CORD
Plug this AC input cord into AC outlet.
2. FUSE HOLDER (AC)
This fuse holder contain AC fuse, replace only with same type fuse when it is blown out. If it
continuously blow, stop replacing fuse and refer serving to qualified personal. Fuse rating is
T1A/250V – AC 220V~240V, T2A/250V – AC 100V~120V.
3. DC INPUT CONNECTOR
This terminal is for connecting DC power supply of battery. (+12V)
4. MIC INPUT CONNECTOR
These are balanced phone connectors. Nominal input level is –50dB/600 ohm.
5. AUX INPUT CONNECTOR
These are unbalanced phone connectors. Nominal input level is –10dB/47Kohm.
6. TELEPHONE INPUT TERMINAL
These terminal are to be connected to telephone exchange system for paging. Nominal input
level is 0.3V/600Ω.
NOTE: When there are paging signal through this terminals, the other input signals are muted.
7. MUTE CONTROL
When the other signal is muted by Mic 1 and Telephone paging, these control are used for
adjusting the muting level.
8. SPEAKER OUTPUT TERMINAL
This terminal is for speaker wire connection. You can select one of 4 ohms, 8 ohms, 25V and 70,
100 volts. Be sure not to make the total impedance less than rated impedance.
FUSE
T1AL/250V
COM4Ω8Ω
70V
100V+GND-TELEPHONE IN
AUX
MIC2
MIC1
INPUT
TEL/MUTE
MIC1/MUTE
~AC INPUT
230V 50Hz, 65W
-
+
DC INPUT
12V
OUTPUT
MODEL NO;PA-920D
AMPLIFIER
MADE IN KOREA
S/N
OUTPUT POWER:20W
CAUTION;
TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
AVIS;
RISQUE DE CHOC ELECTRIOUE NE PAS OUVRIR.
CAUTION;
TO REDUCE THE RISK OF FIRE REPLACE ONLY
WITH SAME TYPE FUSE. UTILISER UN FUSIBLE DE RECHANGE
DE MEME TYPE
4568
3 7
2
1
Page 6
55
INSTALLATION OF THE SPEAKERS
COM4Ω8Ω
25V
70V4Ω8Ω8ΩCOM4Ω8Ω
25V
70V8Ω16Ω4Ω4Ω8ΩCOM4Ω8Ω
25V
70V4Ω4Ω4ΩCOM4Ω8Ω
25V
70V
When you connect the speaker, remove the power cord from AC outlet. And use the suitable
terminals connecting way as belows. Be sure that total impedance is not less than rated
impedance.
• AC VOLTAGE 120V ONLY
VOLT AGE 8.9V 12.65V 25V 70V
IMPEDANCE 4 OHMS 8 OHMS 31.3 OHMS 245 OHMS
FOR 4Ω TERMINAL
(Figure 2-1) (Figure 2-2)
(Figure 2-4)(Figure 2-3)
FOR 8Ω TERMINAL
FOR 25V TERMINAL FOR 70V TERMINAL
Be sure that total impedance is not less
than rated impedance.
Matching
Trans
Matching
Trans
Page 7
COM4Ω8Ω
70V
100V
COM4Ω8Ω
70V
100V
66
INSTALLATION OF THE SPEAKERS
Be sure that total impedance is not less
than rated impedance.
Matching
Trans
Matching
Trans
Be sure that total impedance is not less
than rated impedance.
Matching
Trans
Matching
Trans
COM4Ω8Ω
70V
100V4Ω8Ω8ΩCOM4Ω8Ω
70V
100V8Ω16Ω4Ω4Ω
8Ω
When you connect the speaker, remove the power cord from AC outlet. And use the suitable
terminals connecting way as belows. Be sure that total impedance is not less than rated
impedance.
• AC VOLTAGE 220~240V ONLY
VOLT AGE 8.9V 12.65V 70V 100V
IMPEDANCE 4 OHMS 8 OHMS 245 OHMS 500 OHMS
FOR 4Ω TERMINAL
(Figure 2-1) (Figure 2-2)
(Figure 2-4)(Figure 2-3)
FOR 8Ω TERMINAL
FOR 70V TERMINAL FOR 100V TERMINAL
Page 8
CONNECTIONS
77
FUSE
T1AL/250V
COM4Ω8Ω
70V
100V+GND-TELEPHONE IN
AUX
MIC2
MIC1
INPUT
TEL/MUTE
MIC1/MUTE
~AC INPUT
230V 50Hz, 65W
-
+
DC INPUT
12V
OUTPUT
MODEL NO;PA-920D
AMPLIFIER
MADE IN KOREA
S/N
OUTPUT POWER:20W
CAUTION;
TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
AVIS;
RISQUE DE CHOC ELECTRIOUE NE PAS OUVRIR.
CAUTION;
TO REDUCE THE RISK OF FIRE REPLACE ONLY
WITH SAME TYPE FUSE. UTILISER UN FUSIBLE DE RECHANGE
DE MEME TYPE
TELEPHONE
EXCHANGE SYSTEM
MICROPHONE
SPEAKER
CD/TUNER
CASSETTE DECK
Page 9
88
SPECIFICATIONS
ELECTRICAL
• Rated Output Power (10% THD) ..................................................................................20W(RMS)
4Ω/8.9V, 8Ω/12.65V, 31.3Ω/25V, 245Ω/70V, 500Ω/100V
• Input Sensitivity/Impedance
MIC 1, 2............................................................................................................. –50dB/600Ω, BAL
AUX ............................................................................................................. –10dB/47KΩ, UNBAL
Telephone In......................................................................................................... 0.3V/600Ω, BAL
• Frequency Response (+1/–3dB)
MIC 1, 2...................................................................................................................100Hz~15KHz
AUX........................................................................................................................... 80Hz~15KHz
• T.H.D (1/8 Power)...................................................................................................................... 1%
• Residual Noise..................................................................................................................... –46dB
• Tone Control
TREBLE (10KHz shelving type).......................................................................................... ± 12dB
BASS (100Hz shelving type) .......................................................................................... ±12dB
GENERAL
• Power Source.........................................................................AC 110V~240V, 50/60Hz, DC +12V
• Power Consumption ............................................................................................................... 65W
• Weight................................................................................................................................... 4.4 kg
• Dimensions....................................................................................... 290(W)
76(H) 196(D)mm
* Specifications and design are subject to change without notice for improvement.
Page 10
MADE IN KOREA
Loading...