RX-4508
AM/FM STEREO RECEIVER
OPERATING INSTRUCTIONS
Safety Information
READ THIS BEFORE OPERATING YOUR UNIT
CAUTION
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
This symbol indicates the presence of uninsulated “dangerous voltage” within
the product’s enclosure that may be of sufcient magnitude to constitute a risk of
electric shock.
This symbol indicates important operating and maintenance (servicing)
instructions in the literature accompanying the appliance.
TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE FRONT OR BACK COVER.
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE
PERSONNEL.
WARNING
: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT
EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
CAUTION
•Leave space around the unit for sufcient
ventilation.
•Avoid installation in extremely hot or cold
•Do not let insecticides, benzene, or thinner
come in contact with the unit.
•Never disassemble or modify the unit in any
way.
locations, or in an area that is exposed to
direct sunlight or heating equipment.
•Keep the unit free from moisture, water, and
dust.
•Do not let foreign objects in the unit.
•Keep the ventilation openings clear of items,
such as newspapers, linens, or curtains.
•Keep open ame from candles or other
sources away from the unit.
•Observe the local regulations regarding
disposal of packaging materials, exhausted
batteries and old equipment.
•Do not expose the unit to dripping or
splashing, or place objects lled with liquids
such as vases.
Notes on the AC power cord and the wall
outlet
•The unit remains connected to AC power as
long as it is plugged into the wall outlet, even
if the unit has been turned off.
•To completely disconnect this product from
AC power, disconnect the plug from the wall
socket outlet.
•When setting up this product, make sure
that the AC outlet you are using is easily
accessible.
•Disconnect the plug from the wall outlet when
not using the unit for long periods of time.
Caution regarding installation
ON / STANDBY
MEMORY TUNE / PRESET INPUT
PHONES
VOLUME
Do not block ventilation openings or stack other equipment on the top.
Note:
For heat dispersal, do not install this unit in a conned space such as a bookcase or
similar enclosure.
2
Table of Contents
2 SAFETY INFORMATION
3 TABLE OF CONTENTS
4 GETTING STARTED
4 What's Included
5 Installing the Remote Control Battery
5 Operating the Range of the Remote
Control
6 PARTS DESCRIPTION
6 Front Panel
7 Front Display
7 Rear Panel
8 R
emote Control
9 MAKING CONNECTIONS
9 Connecting Speakers
9 Placing Speakers
9 Connecting Speakers
11 Connecting Playback Components
11 Connecting Audio Components
12 Connecting Recording Components
13 Connecting an Antenna
13 Connecting FM Antenna
14 Connecting AM Antenna
15 Connecting Power
16 OPERATING YOUR SYSTEM
16 Listening to Your System
16 Basic Operation
17 Muting the Sound
17 Adjusting the Sound Balance
(Left and Right)
17 Adjusting the Tone (Bass and Treble)
18 Listening to Radio
18 Selecting the Band
18 Manual Tuning
18 Auto Tuning
18 Manual Presetting
19 Auto Presetting
20 Tuning in to Preset Stations
20 Scanning Preset Stations in Sequence
20 Switching FM Stereo/Mono Mode
21 Bluetooth
21 Pairing with the Bluetooth Device
21 Listening to Music on Device
22 Recording
23 Using Other Functions
23 Setting the Sleep Timer
23 Setting the Auto Power Control
23 Adjusting the Brightness of the
Fluorescent Display
24 TROUBLESHOOTING
24 GENERAL
24 SOUND
25 ADDITIONAL INFORMATION
25 Specications
26 Trademarks and Licenses
3
Getting Started
What's Included
ON / STANDBY
MEMORY TUNE / PRESET INPUT
PHONES
VOLUME
Main unit
POWER
A
123
SPEAKER
B
456
DIMMER
789
PRESET MO/STSLEEP
0
CD AUX
PHONO TUNER
TONE
MUTE
VOLUME
DIRECT
S
E
E
T
R
P
T
S
U
E
E
N
MEMO/
L
L
N
E
E
U
ENTER
T
S
P
R
T
E
E
S
L
R
SEARCH
B
E
A
L
C
N
A
BLUETOOTH
DISPLAY
MODE
BASS
TREBLE
RC-157
Remote control (1 ea) Battery
4
FM Antenna (1 ea) AM Antenna (1 ea)
Warranty
User Manual (1 ea) Warranty (1 ea)
Installing the Remote Control Battery
Getting Started
Remove the battery cover.
1
•Always use alkaline batteries, and do not use the rechargeable batteries (Ni-Cd type).
•If the batteries run out, remove the old batteries and replace them with new ones within
several minutes.
•If the batteries are removed or have been exhausted for a longer period of time, memorized
contents will be cleared. In this case, you should memorize them again.
•If the battery is placed incorrectly, it can cause explosion.
•Remove the battery if the remote control is not used for a long period of time.
•Do not leave the product in a hot or humid place.
•Do not handle and store the battery with metallic tools.
Insert two AAA size batteries with the
2
polarity matched properly.
Operating the Range of the Remote Control
Use the remote control within a range of about 7 meters (23 feet) and angles of up to 30 degrees
aiming at the remote control sensor.
ON / STANDBY
MEMORY TUNE / PRESET INPUT
PHONES
VOLUME
5
Parts Description
Front Panel
21 3 4
ON / STANDBY
PHONES
5 6 7 9 10
ON/STANDBY Button
1
Bluetooth Indicator
2
IR Sensor
3
Display
4
Headphone Connector
5
Memory Button
6
Tune/Preset Select Button
7
MEMORY TUNE / PRESET INPUT
8
Function Buttons
8
•Tuning Up/Down - See page 18.
•Preset Up/Down - See page 18.
•Auto Tuning - See page 18.
•Bluetooth Playback Control - See page 21.
Input Selector
9
Volume Control
10
VOLUME
6
Front Display
Parts Description
21 87
Information Display
1
Headphone Indicator
2
Stereo Indicator
3
Tuned indicator
4
Sleep Timer Indicator
5
Rear Panel
3 4 5 6
Preset Indicator
6
Station Memory Indicator
7
Preset Station Indicator
8
Tone Direct Indicator
9
9
6
1 2 3 4 5
Radio Antenna Connectors
1
Phono Connectors
2
Audio Input Connectors
3
Audio Output Connectors
4
Speaker Connectors
5
AC Input Cord
6
7
RX-4508 AM/FM STEREO RECEIVER
R
emote Control
POWER
123
1
456
A
SPEAKER
B
DIMMER
789
PRESET MO/STSLEEP
2
0
CD AUX
PHONO TUNER
3
TONE
DIRECT
4
S
E
5
L
6
BLUETOOTH
S
E
E
R
P
T
U
N
MEMO/
E
ENTER
P
R
E
E
S
L
B
A
L
N
A
VOLUME
MUTE
T
E
L
N
E
U
T
S
T
R
SEARCH
E
C
DISPLAY
MODE
7
BASS
TREBLE
8
19
18
17
16
15
14
13
12
11
10
9
Numeric Buttons
1
Preset Button
2
Source Select Buttons
3
Tone Control Button
4
▲/▼ Preset Up/Down Buttons
5
◄/► Tuning Up/Down Buttons
MEMO/ENTER
Balance Adjust Buttons
6
Bluetooth Button
7
Bass Up/Down Buttons
8
Treble Up/Down Buttons
9
Bluetooth Previous/Rewind Button
10
Bluetooth Next/Fast Forward Button
11
Bluetooth Play/Pause Button
12
Volume Up/Down Buttons
13
Mute Button
14
Mono/Stereo Select Button
15
Sleep Button
16
Dimmer Button
17
Speaker Select Button
18
Power Button
19
Memory/Enter Button
8
RC-157
Making Connections
Connecting Speakers
Placing Speakers
Determine the locations for your speaker placement according to their manufacturer’s directions
and the layout of your listening room.
Left and right speakers
•Place the speakers with their front
surfaces as ush to the TV or monitor
screen as possible.
•Place each speaker so that sound is
aimed at where listener's ears would
be in the main listening position.
Connecting Speakers
Carefully check the left (L) and right (R) channels and the polarities on the speakers being
connected to this receiver.
Connecting Speaker Wires
Strip away approx. 10 mm (3/8 inch) of
1
wire insulation, and then tightly twist the
wire ends.
Insert the bare part of the wire.
3
Loosen the speaker terminal by turning it
2
counter-clockwise.
Tighten the speaker terminal by turning it
4
clockwise.
9
RX-4508 AM/FM STEREO RECEIVER
Rear Panel
Left
Speaker A
Right
Speaker B
Right
Speaker B
Left
Speaker A
•Be sure to connect speakers rmly and accurately according to the channel (left and right)
and the polarity (+ and −). If the connections are incorrect, no sound will be produced by the
speakers, and if the polarity of the speaker connection is incorrect, the sound will be unnatural
and tinny.
•Be sure to use the speakers with the impedance of 8 ohms or above.
•Do not let bare speaker wires touch each other or any metal part of this receiver. This could
damage the main unit and/or the speakers.
•Never touch the speaker terminals while the AC input cord is connected to the wall AC outlet.
Doing so could result in electric shock.
10
Making Connections
Connecting Playback
Components
Source devices are components from which a
playback signal originates, e.g., a Blu-ray Disc™
or DVD player; a set-top box, or HDTV tuner, etc.
Connecting Audio Components
Audio Connection
Make audio connections from your source devices.
•Ensure the left (L) and right (R) channels
and the inputs and outputs are correctly
connected.
•To listen to the sound of a connected audio
device, select AUX as the input source.
Rear Panel
Phono Connection
You can use the PHONO input jack to connect
turntable.
Rear Panel
R
L
TV, DVD Player, etc.
Turntable with MM type cartridge
•Do not connect the turntable with
MC type cartridge directly. If so, use
a separate head amplier or step-up
transformer.
11
RX-4508 AM/FM STEREO RECEIVER
Listening with Headphones
Connect the headphones to the PHONES
1
jack on the front panel.
ON / STANDBY
PHONES
PHONES
•Be careful not to set the volume too
high when using headphones.
MEMORY TUNE / PRESET INPUT
Connecting Recording
Components
You can connect audio recording devices to
the AUX OUT jacks. You can make an audio
recording from the built-in tuner or from an
VOLUME
audio source connected to the main unit.
Rear Panel
12
R L
AUDIO
IN
Making Connections
Connecting an Antenna
To listen to radio stations, connect the FM wire
antenna and AM loop antenna as illustrated
below.
Connecting FM Antenna
To strengthen the signal reception, extend the
antenna to its full length.
Indoor Antenna
Connect the FM indoor antenna to the
1
FM antenna terminal.
Change the position of the antenna until
2
you get the best reception of your favorite
FM stations.
Rear Panel
Outdoor Antenna
Remove the indoor antenna if it is
1
connected.
Connect the FM outdoor antenna to the
2
FM antenna terminal.
Rear Panel
13
RX-4508 AM/FM STEREO RECEIVER
Connecting AM Antenna
Assemble the AM loop antenna as
1
illustrated below.
Place the antenna as far as possible from
2
the main unit, TV set, speaker cords and
the AC input cord, and set the direction
for the best reception.
If the reception is poor with the AM loop
3
antenna, it is recommended to replace it
with an AM outdoor antenna.
Rear Panel
Rear Panel
14
Connecting Power
Make sure to plug in only after you have
connected all your components to the main
unit. Plug the supplied AC power cord into the
wall outlet.
Rear Panel
AC power cord
Making Connections
To the wall outlet
15
Operating Your System
CD AUX
TONE
DIRECT
MUTE
VOLUME
PHONO TUNER
BLUETOOTH
DISPLAY
SEARCH
MODE
P
R
E
S
E
T
L
R
B
A
L
A
N
C
E
Select the input source you want to play
Listening to Your
System
Basic Operation
You can listen to audio by following the basic
procedures below.
Turn on the connected component.
1
Turn on the main unit.
2
•On the main unit, press
•On the remote control, press
ON/STANDBY
POWER
4
back.
•On the main unit, press
•Each time the button is pressed, the
display changes in the following order:
•On the remote control, press a source
select button.
.
.
INPUT
INPUT
FM AM CD AUX
PHONO Bluetooth AUDIO
.
ON / STANDBY
123
•With the receiver in Standby mode, you
can also turn the power on by pressing
an Input Selector button on the remote
control.
Select the speakers you want to play.
3
•On the remote control, press
A
SPEAKER B
or
. "SPK A(or/and)B" is
displayed.
123
456
789
PRESET MO/STSLEEP
0
SPEAKER
A
SPEAKER
B
DIMMER
POWER
A
SPEAKER
Start playback of the component you
5
selected in step 1.
During playback, you can adjust the volume
6
level.
•On the main unit, rotate the volume
controller.
•On the remote control, press
VOLUME -/+
.
TONE
DIRECT
S
E
L
S
E
E
T
R
P
T
U
N
MEMO/
E
ENTER
P
R
T
E
E
S
L
B
E
A
L
C
N
A
MUTE
E
N
U
T
R
VOLUME
L
E
S
SEARCH
•When using the headphone, press the
corresponding speaker button to switch
off both A and B speakers.
16
Operating Your System
L
A
N
C
P
R
E
S
E
T
Muting the Sound
You can mute the sound temporarily by
pressing
1
2
MUTE
MUTE
Press
MUTE
Press
the sound.
.
to mute the sound.
TONE
DIRECT
S
E
L
TONE
DIRECT
S
E
L
T
U
N
E
L
or
T
U
N
E
L
MUTE
S
E
E
T
R
P
MEMO/
ENTER
P
R
T
E
E
S
R
B
E
A
L
C
N
A
VOLUME - / +
MUTE
S
E
E
T
R
P
MEMO/
ENTER
P
R
T
E
E
S
R
B
E
A
L
C
N
A
E
N
U
T
E
N
U
T
VOLUME
L
E
S
SEARCH
VOLUME
L
E
S
SEARCH
to turn on
Adjusting the Sound Balance
(Left and Right)
Adjust the sound volume balance
1
between the left and right speakers by
pressing
L-BALANCE
BALANCE-R
or
•The each sound balance level can be
adjusted up to 10.
•It is recommended the balance to be
adjusted to 0.
Adjusting the Tone (Bass and Treble)
You can adjust the tone (bass and treble) as
desired.
Select the tone control mode by pressing
1
TONE DIRECT
•"TON CTRL" is displayed on the
display panel.
•If you want to listen to a program source
without the tone effect, select the tone
direct mode by pressing TONE DIRECT.
"TON DIR" and "DIR." are displayed on
the display panel.
Adjust the tone as desired by pressing
2
BASS -/+
•The tone level can be adjusted within
the range of -10 ~ +10 dB.
•It is recommended the bass and treble
to be adjusted to 0 dB (at level).
.
TONE
DIRECT
T
S
U
E
N
L
E
L
Treble -/+
or
L
BLUETOOTH
BASS
.
MUTE
S
E
E
T
R
P
E
MEMO/
ENTER
P
R
E
B
A
L
N
E
U
T
S
T
E
S
R
E
.
R
B
E
A
L
C
N
A
DISPLAY
TREBLE
VOLUME
SEARCH
SEARCH
MODE
T
S
U
E
N
L
E
L
BLUETOOTH
E
MEMO/
ENTER
P
R
E
B
A
L
A
L
N
E
U
T
S
T
E
S
R
SEARCH
E
C
N
DISPLAY
MODE
•Extreme settings at high volume may
damage your speakers.
BASS
TREBLE
17
RX-4508 AM/FM STEREO RECEIVER
PRESET MO/STSLEEP
A
L
A
N
C
A
Listening to Radio
Selecting the Band
Select FM or AM tuner as the input
1
source.
•On the main unit, press
repeatedly.
•On the remote control, press
repeatedly.
INPUT
CD AUX
TONE
DIRECT
R
P
•When FM stereo broadcasts are poor,
select FM mono mode to reduce the
noise. For details, see "Switching FM
Stereo/Mono Mode" on page 20.
Manual Tuning
Select a desired station.
1
•On the main unit, press ◄ or ►
repeatedly.
•On the remote control, press
TUNE
or
► repeatedly.
TONE
DIRECT
R
P
T
S
U
E
N
MEMO/
L
E
ENTER
P
R
L
B
A
L
0
S
E
E
T
S
E
E
T
T
E
E
S
E
C
N
A
INPUT
TUNER
PHONO TUNER
VOLUME
MUTE
TUNE
VOLUME
MUTE
E
L
N
E
U
T
S
R
SEARCH
Auto Tuning
Press and hold
1
more than 1 second.
•On the main unit, press and hold ◄ or
►
•The tuner keeps searching until a
station with strong signal strength is
found. The display shows the tuned
frequency.
•If the found station is not the desired
one, simply repeat this operation.
•Stations with weak signal strength are
skipped during auto tuning.
Manual Presetting
Tune to the desired station with auto or
1
manual tuning.
Press
2
•On the main unit, press
•"AUTO MEM" blinks on the display
panel.
◄
MEMORY
TUNE ◄
or
TUNE►
for more than 1 second.
TONE
DIRECT
S
E
E
T
R
P
T
S
U
E
N
MEMO/
L
E
ENTER
P
R
T
E
E
S
L
B
E
MEMO/ENTER
.
MEMORY
TONE
DIRECT
S
E
E
T
R
P
T
S
U
E
N
MEMO/
L
E
ENTER
P
R
T
E
E
S
L
B
E
A
L
C
N
MUTE
E
N
U
T
R
MUTE
E
N
U
T
R
VOLUME
L
E
S
SEARCH
VOLUME
L
E
S
SEARCH
for
.
18
Operating Your System
A
L
A
N
C
Select a desired preset number (1~30).
3
•On the main unit, press ◄ or ►.
•On the remote control, press
PRESET
▲ or
▼.
•A stored station is erased from the
memory by storing another station in
its place.
TONE
DIRECT
S
E
E
T
R
P
T
S
U
E
N
MEMO/
L
E
ENTER
P
R
T
E
E
S
L
B
E
A
L
C
N
A
•When you set a preset number by
pressing numeric buttons on the remote
control, you can skip the step 4.
Conrm your selection.
4
•On the main unit, press
•On the remote control, press
ENTER
.
•The station has now been stored in
the memory.
•A stored station is erased from the
memory by storing another station in
its place.
TONE
DIRECT
S
E
L
T
U
N
E
L
MUTE
S
E
E
T
R
P
E
MEMO/
N
U
ENTER
T
P
R
T
E
E
S
R
B
E
A
L
C
N
A
MUTE
E
L
N
E
U
T
S
R
MEMORY
VOLUME
L
E
S
SEARCH
PRESET
VOLUME
SEARCH
.
MEMO/
Auto Presetting
Press and hold
1
than 2 seconds.
•"AUTO MEM" blinks and the main unit
begins to preset stations with strong
signals.
•Up to 30 FM stations may be stored.
•To stop auto presetting, press
ENTER
•Auto preset is performed only when you
select FM tuner as a input source.
•FM stations with weak signal strength
cannot be stored to memory.
MEMO/ENTER
again.
TONE
DIRECT
P
T
S
U
E
N
L
E
P
L
B
E
R
MEMO/
ENTER
R
E
for more
MEMO/
VOLUME
MUTE
S
E
T
E
L
N
E
U
T
S
T
E
S
R
SEARCH
E
Repeat the above steps 1 - 4 to store
5
another station.
19
RX-4508 AM/FM STEREO RECEIVER
A
L
A
N
C
456
Tuning in to Preset Stations
Select a desired preset number.
1
•On the main unit, press ◄ or ►.
•On the remote control, press
PRESET
▲ or
•If you select a desired preset number
by pressing ◄ or ► on the main unit,
be sure to select preset mode. When
you select preset mode, "PRESET" is
displayed on the display panel.
•You can select a desired preset number
by pressing numeric buttons on the
remote control.
TONE
DIRECT
S
E
L
▼.
T
U
N
E
L
MUTE
S
E
E
T
R
P
MEMO/
ENTER
P
R
T
E
E
S
R
B
E
PRESET
VOLUME
E
L
N
E
U
T
S
SEARCH
Scanning Preset Stations in
Sequence
Preset
•The receiver starts scanning the
Press
1
.
stations in the preset sequence.
2
Press
again to stop scanning.
DIMMER
Preset
789
PRESET MO/STSLEEP
0
CD AUX PHONO TUNER
•Stations with weak signals will not be
scanned, and will therefore not be
sampled.
Switching FM Stereo/Mono Mode
Select FM tuner as the input source.
1
•On the main unit, press
repeatedly.
•On the remote control, press
repeatedly.
2
Press the
MO/ST
456
789
PRESET MO/ST SLEEP
.
0
INPUT
DIMMER
B
B
TUNER
CD AUX PHONO TUNER
20
Bluetooth
Bluetooth technology is a short-range wireless
technology that enables wireless data
communication between digital devices. You
can enjoy music wirelessly with a music player
featuring Bluetooth wireless technology such
as MP3 player, mobile phone, etc..
Pairing with the Bluetooth Device
Bluetooth AUDIO
Select
1
source.
•On the main unit, press
repeatedly.
•On the remote control, press
BLUETOOTH
INPUT
BLUETOOTH
.
L
BASS
as the input
INPUT
P
R
T
E
E
S
B
E
A
L
C
N
A
DISPLAY
R
TREBLE
SEARCH
MODE
Operating Your System
When pairing is completed,
5
"CONNECTED" is displayed on the
display panel and the Bluetooth indicator
is turned on.
•If the last paired device in range during
pairing mode, the device will connect
automatically.
Listening to Music on Device
To Pause Playback
During playback, press .
1
•Playback will stop at the point where
the button is pressed.
•To resume playback from this point,
press the button again.
P
R
T
E
E
S
L
BLUETOOTH
R
B
A
L
N
A
SEARCH
E
C
DISPLAY
MODE
•Place the device near the main unit within
30 feet (10 meters).
Perform pairing on the device to detect
2
main unit.
•"PAIRING" is displayed on the display
panel and the Bluetooth indicator blinks.
Select "RX-4508" in the device list.
3
•If "RX-4508" is not displayed, repeat
from step 1.
If PIN code is required, enter "0000" on
4
the device.
•Depending on the device, connection
is automatically made without enter the
PIN code.
BASS
TREBLE
•Depending on the device, "Bluetooth
PAUSE" is delayed on the display
panel.
21
RX-4508 AM/FM STEREO RECEIVER
CD AUX
TONE
DIRECT
MUTE
VOLUME
PHONO TUNER
BLUETOOTH
DISPLAY
SEARCH
MODE
P
R
E
S
E
T
L
R
B
A
L
A
N
C
E
To Skip Forward or Backward
Each time the button is pressed, a track
1
is skipped forward or backward.
•On the main unit, press ◄ or ►.
•On the remote control, press or
.
P
R
T
E
E
S
L
BLUETOOTH
BASS
R
B
E
A
L
C
N
A
DISPLAY
TREBLE
To Search Forward or Backward
Each time the button is pressed and
1
held, playback point is moved forward or
backward.
•On the main unit, press and hold ◄ or
►
for more than 1 second.
•On the remote control, press and hold
or for more than 1 second.
P
R
T
E
E
S
L
BLUETOOTH
BASS
R
B
E
A
L
C
N
A
DISPLAY
TREBLE
SEARCH
MODE
SEARCH
MODE
Recording
You can make an audio recording from the built-
in tuner or from an audio source connected to
the receiver (such as a CD player or TV).
Keep in mind you can’t make a digital recording
from an analog source or vice-versa, so make
sure the components you are recording to/from
are hooked up in the same way.
(For details on connection, see “Connecting
Playback Components“ on page 11.)
•The receiver’s volume, Audio parameters
(the tone controls, for example), and
surround effects have no effect on the
recorded signal.
•Some digital sources are copy-protected,
and can only be recorded in analog.
Select the desired recording source.
1
Start recording on the component.
2
Start play on the desired input.
3
•The audio signal from the desired input
will be dubbed on the recorder and you
can enjoy them from the speakers.
22
•The volume and tone (bass and treble)
settings have no effect on the recording
signals.
•When recording the audio signals from
AUX, cannot be recorded on the same
AUX jack. (For example, the audio
signal from AUX IN cannot be recorded
on AUX OUT.)
Using Other Functions
456
456
Operating Your System
Setting the Sleep Timer
You can set a specied period of time before
the main unit is automatically shut.
SLEEP
Press
1
•Each time the button is pressed, the
.
sleep time changes as follows:
10 20 30 60 90 Off
Unit: minutes
•While operating the sleep timer, " "
lights up.
•When the sleep time is selected, the
uorescent display is dimly lit.
456
B
DIMMER
789
PRESET MO/ST SLEEP
0
CD AUX PHONO TUNER
Setting the Auto Power Control
You can set the standby time for the system to
be turned off. The default setting value is 6H.
Press and hold
1
seconds.
•Each time this button is pressed, the
auto power control time changes as
follows:
SLEEP
for more than 3
Off 2h 4h 6h
•When you play music via Bluetooth, the
auto power control does not works.
Adjusting the Brightness of the
Fluorescent Display
You can select the brightness of the uorescent
display as desired.
DIMMER
Press
1
•Each time the button is pressed, the
display mode changes as follows:
•In the display Off mode, pressing
any button will restore the display On
mode.
.
On Dimmer Off
B
DIMMER
789
PRESET MO/STSLEEP
0
CD AUX PHONO TUNER
B
DIMMER
789
PRESET MO/ST SLEEP
0
CD AUX PHONO TUNER
23
Troubleshooting
If you experience any of the following difculties while using the system, use this troubleshooting
guide to help remedy the problem before requesting servicing. Should any problem persist, consult
your nearest authorized dealer or authorized independent company.
If the unit does not operate normally due to external inuence such as static electricity, disconnect
the power plug from the outlet and insert again to return to normal operating conditions.
GENERAL
Problem Remedy
The power does not
turn on.
The system suddenly
turns off.
No sound is heard after
a function is selected.
Can’t operate the
remote control.
The display is dark or off. •Press
SOUND
Problem Remedy
There is no sound
from the selected
component.
Sound is interrupted or
there is noise.
The left and right
sounds are unbalanced
or reversed.
Recording cannot be
carried out.
No sound, or sound
suddenly ceases.
•Disconnect the power plug from the outlet, and connect again.
•After about a minute (you won’t be able to turn the main unit on during this
time), turn the system back on. If the problem persists, call an authorized
independent service company.
•Make sure the component is connected correctly.
(See "Making Connections" on page 9.)
MUTE
Press
•Replace the batteries. (See page 5.)
•Operate within 7 m, and 30° of the remote sensor
•Remove any obstacles, or operate from another position.
•Avoid exposing the remote sensor on the front panel to direct light.
•Check that the component is connected correctly to the audio input jacks of
components.
•Ensure that the cords are fully inserted into the jacks on both the component
and the main unit.
•Ensure that the component is selected correctly.
•Check the output audio formats support system.
•Check that the speakers and equipment are connected securely.
•Move your audio equipment away from the TV.
•The plugs and jacks are dirty. Wipe them with a cloth slightly moistened with
alcohol.
•Ensure that the speakers and equipment are connected correctly and securely.
•Ensure that the equipment is connected correctly.
•Select the source equipment using the input buttons (See page 16).
•Copyright protection to prevent recording is contained in the sources. In this
case, you may not be able to record from the sources.
•Check the audio output settings of the source component.
to restore the sound.
DIMMER
on the control repeatedly to return to the default setting.
24
Additional Information
Specications
Audio Section
Power Output
Input sensitivity/impedance
Signal-to-noise ratio (IHF-A)
Frequency response
Bass/Treble control
Frequency range
Usable sensitivity (S/N = 30 dB)
Signal-to-noise ratio (mono/stereo)
Distortion (mono/stereo)
Stereo separation
Image rejection
IF rejection
100 W x 2 ch
(40 Hz – 20 kHz, 8 Ohms, THD 1 % / Stereo Mode)
Phono(MM): 2.5 mV / 47k ohms
Line(CD, AUX): 200 mV / 47k ohms
Phono(MM): 65 dB
Line(CD, AUX): 93 dB
Phono(MM), RIAA: 30 Hz – 20 kHz : ±3 dB
Line(CD, AUX): 10 Hz – 95 kHz : ±3 dB
±10 dB
FM Tuner Section
87.5 – 108.0 MHz
12 dBu
55 dBu / 50 dBu
0.7 % / 1.0 %
30 dBu @ 1 kHz
20 dB
65 dB
AM Tuner Section
Frequency range
Signal-to-noise ratio
Usable sensitivity (S/N = 20 dB)
Selectivity (±10 kHz)
IF rejection
522 – 1611 kHz
35 dB
63 dBu/m
23 dB
40 dB
25
RX-4508 AM/FM STEREO RECEIVER
Bluetooth Section
Model name
Out Power
Frequency Range
IK-CSR8645
-6 – 4 dBm
2402 – 2480 MHz
General Specications
Power requirement
Power consumption
Dimensions (W×H×D, including protruding
parts)
Weight (Net)
AC 230V / 50 Hz
230 W
17.1" x 5.5" x 14.7" (435 mm x 141 mm x 375 mm)
16.3 lb (7.4 kg)
Trademarks and Licenses
This system incorporates a sophisticated technology that allows you to create optimum sound
quality and sound atmosphere in your personal Home Theater.
Bluetooth
The
any use of such marks by inkel is under license. Other trademarks and trade names are those of
their respective owners.
®
word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and
© 2014 CSR plc and its group companies.
The aptX® mark and the aptX logo are trade marks of CSR plc or one of its group companies and
may be registered in one or more jurisdictions.
26
RX-4508
AM/FM STEREO RECEIVER
Printed in Vietnam5707-00000-935-0S
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