Inter-m PA-920D Manual de usuario

OPERATING MANUAL

POWER

AMPLIFIER

PA-920D

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 main-

tenance (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 ex-

posure.

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.

FEATURES

• POWER RATING

Amplifier PA-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.

FRONT PANEL CONTROLS

1. POWER INDICATOR

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 2

AUX

BASS

TREBLE

-12

+12

-12

+12

POWER

OFF

POWER

MASTERVOLUME

44 532 1

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

COM

4Ω

8Ω

70V

100V

GND

TELEPHONEIN

AUX

MIC2

MIC1

INPUT

TEL/MUTE

MIC1/MUTE

~AC INPUT

230V 50Hz, 65W

DC INPUT

12V

OUTPUT

MODEL NO;PA-920D

AMPLIFIER

MADEINKOREA

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

INSTALLATION OF THE SPEAKERS

COM

4Ω

8Ω

25V

70V

4Ω

8Ω

COM

4Ω

8Ω

25V

70V

8Ω

16Ω

4Ω

8Ω

COM

4Ω

8Ω

25V

70V

4Ω

COM

4Ω

8Ω

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

VOLTAGE 8.9V 12.65V 25V 70V

IMPEDANCE 4 OHMS 8 OHMS 31.3 OHMS 245 OHMS

FOR 4ΩTERMINAL

(Figure 2-1) (Figure 2-2)

(Figure 2-4)(Figure 2-3)

FOR 8ΩTERMINAL

FOR 25V TERMINAL FOR 70V TERMINAL

Be sure that total impedance is not less

than rated impedance.

Matching

Trans Matching

Trans

COM

4Ω

8Ω

70V

100V

COM

4Ω

8Ω

70V

100V

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

COM

4Ω

8Ω

70V

100V

4Ω

8Ω

COM

4Ω

8Ω

70V

100V

8Ω

16Ω

4Ω

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

VOLTAGE 8.9V 12.65V 70V 100V

IMPEDANCE 4 OHMS 8 OHMS 245 OHMS 500 OHMS

FOR 4ΩTERMINAL

(Figure 2-1) (Figure 2-2)

(Figure 2-4)(Figure 2-3)

FOR 8ΩTERMINAL

FOR 70V TERMINAL FOR 100V TERMINAL

CONNECTIONS

FUSE

T1AL/250V

COM

4Ω

8Ω

70V

100V

GND

TELEPHONEIN

AUX

MIC2

MIC1

INPUT

TEL/MUTE

MIC1/MUTE

~AC INPUT

230V 50Hz, 65W

DC INPUT

12V

OUTPUT

MODEL NO;PA-920D

AMPLIFIER

MADEINKOREA

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

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.

MADE IN KOREA

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