Inter-m POP-30, POP-60, POP-120 Operating Manual

OPERATING MANUAL

FULL LOGIC CASSETTE RECEIVER

AMPLIFIER

POP-30/60/120

1

UNPACKING AND INSTALLATION

FEATURES

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.

Although it is neither complicated to install nor difficult to operate your double cassette deck, 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 materials. They may be needed when moving your set and are requi­red if it ever becomes necessary to return your set for service. Never place the unit near radiator, 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.

30, 60, 120 WATT OUTPUT POWER

This model can deliver very strong (POP-30:30W, POP-60:60W, POP:120W)(RMS) output power at less
than 1% THD.

VERSATILE AND CONVENIENT USE

6 channels of input signals from MIC 1~3, AUX, TUNER, DECK call signs of 4 Tone Chime, Tone Co­ntrol, speaker selsctor are incorporated for versatile and convenient use.

MUTING FOR PRIORITY

MIC 1 and 4 TONE CHIME have priority to the others signal, you can adjust the mute level as adjust­ing volume of rear panel.

CHIME WITH FOUR TONES

You can conveniently use four tone chime before the announcement.

DIGITAL TUNER

The total 30 memory address in system can memorize the frequency of broadcasting. You can use the
desirable frequency conveniently.

FULL-LOGIC CASSETTE DECK

This PA cassette receiver employs high reliable full-logic Auto-Reverse cassette deck for playback and
recording.

FRONT PANEL CONTROLS

2

2420151619 22 21 23

12 4567 98

25

26

27

3

10121113141718

1. POWER SWITCH

Pressing this switch to ON will make the power indicating LED ON and supply the power to this unit.

2. MASTER VOLUME

This control is used for adjusting the volume of finally mixed sound.

3. TUNER VOLUME

You can adjust the volume level of AM or FM radio signal.

4. DECK VOLUME

You can adjust the volume level of cassette deck.

5. AUX VOLUME

You can adjust the volume level of AUX.

6. 7. 8. MIC VOLUME

You can adjust the volume level of MIC 1, MIC 2, and MIC 3.

9. TONE CONTROL

Each frequency level is adjusted to +12dB by the 2 controls from 100Hz to 10KHz.

10. MIC INPUT JACK

These jacks are for the MIC 1 input. Input sensitivity is 1mV and the input impedance, balanced
10KΩ or balanced 600Ω , is optional.

11. REVERSE MODE SELECTOR

: One side PLAY or REC (SIDE A STOP, SIDE B STOP)
: SIDE A SIDE B STOP, SIDE B STOP
: Continuous Auto Reverse

MIC 3 MIC 4

FULL LOGIC CASSETTE RECEIVER AMPLIFIER

POP-120

-12dB +12dB

BAS S

-12dB +12dB

TREBLE

CHIME

MASTER

VOLUME

MIN MAX

MIN

MAX

MIC 1

SPE AKE

R

ON OFF

POWER

A

B

PLO
T

+2dB
0dB

-2dB

-6dB

-12dB

-21dB

-24dB

POW

ER

MIN

MAX

MIC 2

MIN

MAX

MIC 3

MIN

MAX

MIN

MAX

AM/FM DTS TUNER AM/FM 1 2 3 UP TUNER

4 5 6 DOWNMEMO

ON/OFF MA

X

TUN

REVE R

SE

PLAYSTOPPLA

Y

RE

W

FF

EJECT REC

PAUS

E

-

3

12. FORWARD PLAY BUTTON( )/REVERSE PLAY BUTTON( )

:Press this button, and tape will be in forward play mode. The indicator ,

lights up.

:Press this button, and tape will be in reverse play mode. The indicator , lights up.

13.

STOP BUTTON( )

Press this button to stop the tape.

14. FAST FORWARD BUTTON( )/REWIND BUTTON( )

Press these buttons to fast forward( ) or rewind( ) the tape.

15. PAUSE BUTTON( )

Press this button in PLAY or REC mode, and the tape will be in PAUSE mode.

16. REC BUTTON( )

Press this button, this unit will be in recording pause mode.

17. EJECT BUTTON
Use this button to open the cassette door.

*When the AC power off during playback or recording, this door of the deck can not open.
You can open the door by the power switch on after the power on.

18. CASSETTE DOOR

This door can be easily dismounted by pushing it up and then taking it out toward the

front after
opening in door. Press the eject button of the Deck to open the cassette door when Deck is in
the stop mode.

19. COUNTER/RESET BUTTON

Press the RESET button to zero the counter before starting to record or play.
This will enable you to easily relocate any point on the tape.

20. TUNING FREQUENCY DISPLAY

You can confirm the frequency of tuner through this display.

21. BAND SELECTOR

These switches are used for selecting AM or FM in case of using tuner.

22. MEMORY SWITCH

This switch is for memorizing the broadcasting frequency.

1. Select the memory area AM or FM with the BAND switch .

2. Select the frequency which you want to memorize by the UP, DOWN switch .

3. Press MEMORY switch , then select the desirable address with switch .

4. This present status of tuner will be memorized in selected address.

23. ADDRESS SELECT SWITCH

This switch has 6 kinds address from 1 to 6. But the practical capacity is 30 kinds ad

dress because

one address is divided by F1, F2, F3, or A1, A2 area.

24. UP/DOWN SWITCH
When the switch is pressed one time, AM/FM frequency is up/down-counted per 9KHz/0.1MHz

And in case of pressing continually, the frequency is fast up/down counted.

25. CHIME BUTTON

Pressing this button will activate chime circuitry.

21

18

1818

4

26. SPEAKER SELECTOR
These switches are used for connecting the output of amplifier to the speakers individually or totally.

27. OUTPUT LEVEL DISPLAY

This display indicates the output level (RMS) per 0dB.

REAR PANEL CONTROLS

5

11 10

2 1 3

456789

1. AC PLUG

This AC INPUT CORD into AC INLET.

2. FUSE HOLDERS

This fuse holder contain AC fuse. When they are blown out replace them with same type fuse as
following page. If they continuously blow, stop replacing fuse and refer servicing to qualified personnel.

3. ANTENNA TERMINAL

FM Terminal : You can connect 75Ω coaxial cable or 300Ω feeder cable according to antennas.
AM Terminal : Connect it to the AM Terminal in case of using outdoor antenna.
GND Terminal : An erathing terminal for AM receipt. It is possible to protect the unit in a thunder sto­ rm and to clear the noise.

4. MUTE CONTROL

When the other signal is muted by MIC 1 and Chime, this control is used for adjusting the muting
level.

5. MIC 2 INPUT JACK

These jacks are for the MIC 2 input. Input sensitivity is 1mV and the input impedance balanced 10KΩ
or 600Ω , is optional.

6. MIC 3 INPUT JACK

These jacks are for the MIC 3 input. Input sensitivity is 1mV and the input impedance balanced 10KΩ
or 600Ω , is optional.

1.5A/250V/0.75A/250V 2A/250V/1A/250V 3A/250V/1.5A/250V

POP-30

POP-60

POP-120

FUSE RATING

VOLTAGE AC 115V/230V AC 115V/230V AC 115V/230V

MODEL

AM

RISQUE DE CHOCELECTRIQUE NEPAS OUVRIR.

SHOCK HAZARD DO NOT OPEN. NO USER SERVICEABLE
PARTS INSIDE. DO NOT EXPOSE UNIT TO RAIN OR MOISTURE

1

1

5

100V

(333Ω )

70V

(163Ω )

~AC INPUT:230V,50Hz 235W
FUSE:T1.6AL/250V

SPE AKE R OUTPUT

B A

COM OPT

IN

AMP IN

PREA MP
OUTPUT

AUX

MIC 3 MIC 2

MUTE LEVEL

MIN

MA
X

WARNING;

AVIS;

CAUTION; REPLACE WITH THE SAME TYPE FUSE ASINDICATED. UTI LISER

UN FUSIBLE DE RECHANGE DE MEME TYPE.

S/N

MODEL NO;POP -120

FULL LOGIC CASS ETTE
RECE IVER AMPLIFIER

MADE IN KOREA

4Ω

ANT TERMINAL

300Ω

FM(75)Ω

GND

6

7. AUX INPUT JACK

You can connect the sound source of tuner, deck, CD, videom etc.

8. PRE AMP OUTPUT JACK

You can connect the line out signal of this unit to another amplifier, recorder or signal processor etc.

9. AMP INPUT JACK

You can connect a signal processor like an equalizer or a filter by plugging phone plugs into this jacks.

10. SPEAKER TERMINAL

These terminals are for the connecting the speakers. Select the terminals of 4Ω or high impedance not
to over load.

11. IMPEDANCE SELECTOR SWITCH

This switch is for selecting the impedance of the high impedance terminal on speaker terminal .

*WARNING:For low impedance (4Ω )output remove jumper between opt in &(+)terminals.
For high impedance(25 or 70V) output install the jumper.
DO NOT:Use both at the same time. Doing do could damage your amplifier and vold the warranty.

10

MODEL

Voltage/Impedance

100V

70V
25V
4Ω

333Ω

166Ω 83Ω

163Ω 82Ω

41Ω

21Ω

10.5Ω

5.2Ω

4Ω /11V

4Ω /15.5V

4Ω /21.9V

POP-30

POP-60

POP-120

7

CLEANING OF HEADS AND TAPE PATH

Generally, it is sufficient to clean heads after every 10 hours of operation. However, all surfaces over
which tape travels should be cleaned before making high quality recordings.

1. Set the POWER switch to OFF and remove cassette door lid by pushing it up and then taking it out toward
the front side after opening the door.

2. Wipe the heads using a cleaning tip slightly moistened with commercially available head cleaner.

3. Wipe the capstan and pinch roller using another cleaning tip slightly moistened with the commercially
available rubber cleaner.

REC/PB HEAD

DECK 4

capstan

Pinch roller

EJECT

MAINTENANCE

8

4. Replace the door lid.
Do not insert cassette until the cleaner dries out.

DEMAGNETIZING HEADS

Residual magnetism will gradually build up on the heads through continuous use and cause erasure of
high frequencies and hiss. The heads and metallic parts of the tape path should be demagnetized after
20-30 hours of operation with a commercially available head demagnetizer. Be sure the cassette deck is
turned off.

CLEANING CABINET

Clean the cabinet, panel and controls with a soft cloth lightly moistened with mild soap solution.
Do not use any type of sourcing powder or solvent such as alcohol or benzine,

9

TO PROTECT RECORDING FROM ACCIDENTAL ERASURE

Remove the tab as illustrated so that the REC cannot be activated. To record on a cassette after tabs have
been removed, simply cover the slot with cellophane or vinyl tape.

CASSTTE CARE

Before inserting a cassette, take up the slack of the tape to prevent it from becoming entangled around
the capstan.
Avoid touching the tape surface of a cassette. Protect it from dust by storage in a case. Even minor dirt of d­ ust could cause contamination of the heads resulting in noise and sound drop-out.
In case you store your cassette tape, stretch your cassette tape by your pencil or stick, etc.

NOTE ON CASSETTE

To protect side A recording

Do not stick and other material
on the portion marked

CONNECTION OF THE ANTENNA AND THE EARTHING CABLE

10

FM RECEIVING ANTENNA

The electric wave of FM broadcasting is weakening in hills and valleys, around buildings and in iron-re­inforced buildings because of its own nature.

INSTALLATION OF AN ANTENNA EXCLUSIVELY FOR FM

Connect the feeder of the antenna of the terminal of 300Ω (Fig. 1).
Listening to the broadcasting, fix it after deciding the location and the direction so that the receipt con­dition may be optimum.

INSTALLATION OF AN ANTENNA USING THE COAXIAL CABLE

You may feel the noise at the crowded downtown, city streets and factory sites as well as around power c­ables, even in the case of using an antenna exclusively for FM. In these regions, install it through con­nection with a coaxial cable of 75Ω .

INDOOR ANTENNA

In the regions where FM broadcasting is heard comparatively well due to the near distance to the sta­tion or wooden structure, you can receive broadcasting of good quality by using T-type antenna.
Fix the antenna at the best place for receipt after connecting it with a terminal of 300Ω .

AM LEAD ANTENNA

Fix on side to AM terminal and the other to high place like a wall after making the coated cable of a s­ingle cable about 6~8m long(Fig. 2).

AM OUTDOOR ANTENNA

Install the vinyl-coated cable at the outdoor place in case you cannot hear quite well though you have
installed the lead antenna. (Fig. 2)

AM

GND

300W

FM75W

ANTENNA

FM DIPOLE ANTENNA

DIRECTION OF
BROADCASTING STATION

FM ANTENNA

EARTH

(FIGURE 1)

11

ON EARTHING(EARTH GND)

Broadcasting may de heard well without earth connection. But connect the earth to the earth terminal
(GND) for safety and prevention of noise(Fig. 2).

AM

GND

300W

FM75W

ANTENNA

EARTH

(FIGURE 2)

12

When you connect the speaker, remove the power cord from power outlet. And use the suitable termin­als connecting way as belows.

INSTALLATION OF THE SPEAKER

COM 4WOPT

IN

AB

+

_

+

-

+

-

+

-

4W

SPEAKER

8W 8W

FOR 4W TERMINAL

COM 4WOPT

IN

AB

+

_

IMPEDANCE SECECTOR

70V

(4W )

100V
(83W )

Matching

Trans

Matching

Trans

Be sure that total impedance is not less than rated impedance

FOR HIGH IMPEDANCE TERMINAL

1133

SPECIFICATIONS

ELECTRICAL

AMPLIFIER SECTION

• Rated Output..........................................................................................................30W, 60W, 120W(RMS)

• Input Sensitivity/Impedance

Mic 1-3..........................................................................................1mV/10KΩ(Mic 1-3 BAL 600ΩOptional)

Aux..........................................................................................................................................350mV/10KΩ

Line in ............................................................................................................................................1V/10KΩ

• Frequency Response..........................................................................................................80Hz~20000Hz

• T.H.D (at 1KHz Rated Output)................................................................................................Less than 1%

• S/N.......................................................................................................................................................90dB

• Tone Control(100Hz~10KHz)...........................................................................................................

• Speaker Output/Impedance......................................POP-30:30W(11V/4Ω, 25V/21Ω,70V/63Ω,100V/333)

POP-60:60W(15.5V/4Ω, 25V/10.5Ω,70V/82Ω,100V/166)

POP-120:120W(22V/4Ω, 25V/5.2Ω,70V/40Ω,100V/83)

• Line Out/Impedance.......................................................................................................................1V/600Ω

TUNER SECTION

• Tuning Range...................................................................................................................FM:87.5-108MHz

.............................................................................................................................................AM:522-1620KHz

• Antenna Input.............................................................................................FM:300Ω, BAL or 75Ω, UNBAL

• Usable Sensitivity ............................................................................................................................FM:2µV

.........................................................................................................................................................AM:12µV

•S/N..................................................................................................................................................FM:60dB

.........................................................................................................................................................AM:50dB

12dB

DECK SECTION

• Track System..........................................................................................................................2 Track Mono

• Recording System..............................................................................................................AC Bias System

• Tape Speed................................................................................................................................4.76cm/sec

• Wow & Flutter....................................................................................................................Less than 0.05%

• Frequency Response...........................................................................................................125Hz~6.3KHz

• S/N.......................................................................................................................................................50dB

GENERAL

• Power Source.......................................................................................................AC 110V~240V, 50/60Hz

• Power Consumption..............................................................................................................POP-30:105W

.................................................................................................................................................POP-60:132W

.............................................................................................................................................POP-120:235W

• Weight.................................................................................................................................POP-30:11.6Kg

...............................................................................................................................................POP-60:12.6Kg

...........................................................................................................................................POP-120:14.4Kg

• Dimensions....................................................................................................420(W)

*Specifications and design subject to change without notice for improvements.

132(H) 320(D)mm

MADE IN KOREA