Tangent Stereo Amplifier AMP 50 User Manual

A M P -5 0  
Operation Manual  
Integrated Amplifier  
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CONTENTS  
ACCESSORIES  
OPERATION AND FUNCTIONS  
ON, OFF and Standby  
Selecting the input source  
Using the function menu  
Volume control  
Bass control  
Treble control  
13  
13  
14  
14  
15  
15  
16  
16  
Accessories  
01  
02  
03  
CONTENTS  
Contents  
Balance control  
Loudness  
SAFETY PRECAUTIONS  
Safety precautions  
TROUBLESHOOTING  
IMPORTANT SAFETY INSTRUCTIONS  
Troubleshooting  
17  
18  
Important safety instructions  
IMPORTANT INFORMATION  
Important information  
04  
06  
TECHNICAL DATA  
Technical data  
CONNECTION  
Connection to the mains  
07  
REMOTE CONTROL  
Installation of batteries  
Using the remote control  
Remote control functions  
08  
08  
09  
FRONT PANEL CONNECTIONS  
Front panel  
Connections  
10  
11  
CONNECTION  
Audio connection layout  
12  
02  
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SAFETY PRECAUTIONS  
A triangle with a lightning symbol draws the user's attention  
to "dangerous voltage" without insulation in the cabinet  
which may be high enough to entail a risk of electric shock.  
A triangle with an exclamation mark draws the user's  
attention to important instructions for use and maintenance  
in the accompanying manual, which should be studied.  
A symbol for CLASS II (double insulation)  
WARNING:  
CAUTION:  
TO MINIMISE THE RISK OF FIRE OR ELECTRICAL SHOCK, DO  
NOT EXPOSE THE UNIT TO RAIN OR MOISTURE. DO NOT OPEN  
THE CABINET AS IT CONTAINS DANGEROUS VOLTAGE. ONLY  
QUALIFIED TECHNICIANS ARE ALLOWED TO CARRY OUT  
REPAIR AND SERVICE.  
If the plug of the power cord needs to be replaced, it is important that the replacement  
is identical to the plug to be replaced, or that the new plug has been recommended by  
the manufacturer.  
TO AVOID ELECTRICAL SHOCK, IT IS IMPORTANT TO INSERT THE PLUG  
CORRECTLY INTO THE SOCKET.  
03  
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IMPORTANT SAFETY INSTRUCTIONS  
WARNING: IT IS IMPORTANT THAT YOU READ AND OBSERVE BOTH THE INSTRUCTIONS IN THIS MANUAL AND  
THE INSTRUCTIONS ON THE UNIT. KEEP THIS MANUAL FOR FUTURE REFERENCE.  
This unit was designed and manufactured with a view to providing maximum safety for the user. Incorrect use of the unit  
may cause electrical shock or fire. The protection devices built into this unit will protect the user if the procedures below  
are observed in connection with installation, use and repair. This unit is fully electronic and contains no parts that can be  
repaired by the user.  
DO NOT REMOVE THE CABINET. RISK OF DANGEROUS VOLTAGE. ONLY QUALIFIED TECHNICIANS ARE  
ALLOWED TO REPAIR THE UNIT.  
Read the manual  
Heat  
Upon unpacking the unit,  
please read the manual  
carefully and observe all the  
instructions given.  
Do not place the unit near  
sources of heat such as radiators,  
heat registers, ovens or other  
units that produce heat.  
Power supply  
Only the power supply indicated on the  
rating plate must be used for this unit.  
If you are not sure which power supply  
you have, please contact the distributor  
or the local electricity supplier.  
Water and moisture  
The unit must not be placed  
close to water, such as bathtub,  
wash basin, kitchen sink or  
laundry tub, in a damp cellar or  
close to a swimming pool, etc.  
Cleaning  
Unplug the unit before cleaning.  
Do not use liquid detergents and  
aerosol cleaning agents. Use a  
dry cloth.  
Earthing or polarisation  
If the plug cannot be inserted properly into the  
socket, or if the plug does not fit, the unit must not  
be used in your country.  
Power cords  
Wiring must be organised to  
prevent people from stepping on  
the cables and to avoid pinching  
by objects placed on or beside  
them. Take special care around  
sockets and plug boxes and  
where the power cords leave the  
unit.  
Ventilation  
The cabinet is provided with slots and  
openings to ensure ventilation and reliable  
operation and to protect the unit against  
overheating. Do not block or cover these  
openings. The openings must never be  
blocked, for instance by placing the unit on  
a bed, a sofa, a carpet or similar surface.  
Overloading  
Make sure that wall sockets,  
extension cords and plug  
boxes are not overloaded as  
this may lead to fire or electrical  
shock.  
04  
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IMPORTANT SAFETY INSTRUCTIONS  
Lightning  
Damage  
Unplug the unit for additional  
protection during thunder or when  
the unit is not used for prolonged  
periods. This will prevent damage  
to the unit from lightning and  
power surges.  
Unplug the unit and contact qualified technicians in  
the following cases:  
A) If the power cord or the plug is damaged.  
B) If liquid has been spilled on the unit or objects  
have fallen into the unit.  
C) If the unit has been exposed to rain or water.  
D) If the unit does not work properly after adhering to  
the instructions in the operation manual. Only the  
settings described in the operation manual must be  
made as incorrect setting may result in damage and  
often will make it difficult for a qualified technician to  
make the unit work properly again.  
E) If the unit has been dropped or damaged in any  
other way.  
F) When the operation of the unit changes  
drastically, the unit requires service.  
Penetration of objects and liquid  
Never push any foreign objects  
through the openings into the unit,  
as they may touch dangerous  
voltage points or short-circuit parts  
and thus cause fire or electric  
shock. Do not spill liquid on the  
unit.  
Accessories  
Do not place the unit on unstable surfaces such as a  
trolley, stand, tripod, shelf or table.  
Service  
Do not attempt to carry out any  
service work yourself. By opening or  
removing the cabinet, you will be  
exposed to dangerous voltage or  
other hazards. Any service work  
should be carried out by qualified  
technicians.  
The unit may fall and injure children or  
adults or be seriously damaged. Use  
only trolley, stand, tripod, shelf or table  
that is very stable or provided with the  
Unit. The uni must be installed in accordance with the  
manufacturer’s instructions and by means of  
installation equipment recommended by the  
manufacturer.  
If the unit is placed on a trolley, the trolley must be  
moved very carefully. Sudden stops, unnecessary  
force and uneven surfaces may cause the trolley to  
turn over.  
Spare parts  
If spare parts are required, make sure that the  
service technician uses spare parts specified by the  
manufacturer or spare parts with the same  
characteristics as the original. Unauthorised spare  
parts may cause fire, electrical shock, etc.  
Safety check  
Loads  
After service or repairs on the unit,  
ask the service technician to carry  
out a safety check to ensure that  
the unit is ready for use.  
Do not place heavy loads on the  
unit and do not step on it. The load  
may fall and cause serious injury to  
persons or damage to the unit.  
05  
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IMPORTANT INFORMATION  
Handling instructions  
Condensation  
Condensation may occur in the following cases:  
The top and back panel of the unit may become  
warm after prolonged use. This is not due to a  
defect.  
When the amplifier is moved directly from a cold  
to a warm place.  
Turn off the power when the unit is not used.  
When the amplifier is used in a room where the  
radiator has just been switched on or a place  
where the cold air from the air-conditioning  
system is directed at the unit.  
Protect the power cord  
If the amplifier is used in the summer in a warm  
and humid room just after it has been moved  
from an air-conditioned room.  
Follow the instructions below to prevent abnormal  
operation, electrical shock, fire or personal injury:  
Hold the plug firmly when inserting it into the  
socket.  
If there is steam or a high level of humidity in the  
room.  
Avoid heat-producing devices.  
Do not place objects on the power cord.  
Do not carry out service work on or change the  
power cord.  
In case of condensation, the amplifier will not work  
properly. Turn off the unit. Unplug the unit and leave  
it for 2-3 hours. The amplifier will then have  
adapted to the environment and any condensation  
will have disappeared.  
Positioning  
Do not place the unit in any of the following  
places:  
In sunlight, close to heat-producing devices or in  
an enclosed rack.  
In places with high temperatures (40C or more)  
or high relative humidity (90% or more).  
In dirty places as some internal parts may be  
damaged.  
Do not put your fingers or any  
other objects into the unit  
Touching the internal parts is dangerous and may  
cause injury or damage. Do not open the cabinet.  
Do not place any foreign matter in the unit.  
Interference  
Placing the amplifier near a television set, radio  
or video player may cause poor picture and  
sound quality. In that case, move the amplifier  
further away from the television set, radio or  
video player.  
06  
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CONNECTION  
Connection to the mains  
230-240V AC~50Hz  
Do not turn on the power before all connections have been made correctly.  
Check that all connections have been made correctly before turning on the  
power.  
Check that the mains voltage is 230-240V AC50Hz before turning on the  
power.  
Connection to the mains  
Check that all other connections have been made correctly before inserting the mains plug into the wall  
socket.  
Then insert the plug into a suitable socket.  
If the unit is to be used abroad, you may need an adapter.  
07  
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REMOTE CONTROL  
Installation of batteries  
Remove the cover as illustrated.  
Replace the cover.  
Position two batteries of the type  
AAA/R03/UM4 in the battery  
compartment. Make sure that the  
orientation of the batteries is correct (see  
drawing at bottom).  
Do not mix new and old batteries and do not use different types of batteries.  
If the remote control is not used for prolonged periods, remove the batteries from the remote control  
to avoid corrosion.  
Using the remote control  
VOLUME  
Direct the remote control at the sensor on the front  
Volume -37,5db  
tuner  
POWER  
HEADPHONE  
panel of the amplifier. When the remote control signal  
PHO
TUNER  
DVD  
CD  
AUX  
1
AUX  
2
FUNCTION  
is received, the unit reacts accordingly. The remote  
control works within a range of 6 metres.  
AMP-50 AMPLIFIER  
+
+
Sometimes the remote control does not work well in strong light. You may have to move the amplifier if it is a  
problem.  
Malfunction may occur if other remote controls are used near the amplifier.  
Do not place any objects on the remote control, as the batteries may become flat if a key is depressed  
constantly.  
Make sure that there are no obstacles between remote control and amplifier.  
Do not position the amplifier behind tinted glass as it may reduce the maximum range of the remote control.  
08  
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REMOTE CONTROL  
Remote control functions  
DAB-50 FUNCTIONS:  
Scroll +/-: Switches between DAB and FM  
stations  
Select: Switches between MONO and AUTO  
on the FM band, and selects the DAB station  
displayed.  
1-4 : Selects stored stations. If depressed for  
more than two seconds, a station is stored  
under the number concerned.  
+
Power: Sets the DAB-50 in standby mode.  
Autotune: Press once to automatic tune in  
to DAB stations. Depress button for two  
seconds to initiate an international search.  
At FM, the autotune function will search for  
a station at a higher frequency.  
Info: Displays RDS and DAB information.  
Function: Switches between DAB and FM.  
CDP-50 FUNCTIONS:  
Eject: Opens the CD drive.  
Program: Allows playback of the music  
tracks on a CD in a certain order.  
Stop: Stops playback.  
Previous: Selects the previous track.  
Depress button to rewind.  
Play/Pause: Starts and pauses playback.  
Repeat: Repeats a single track or all tracks  
on a CD.  
Power: Sets the CDP-50 in standby mode.  
Next: Selects the next track. Depress  
button for fast forward.  
+
Random: All tracks are played in random  
order.  
AMP-50 FUNCTIONS:  
Input buttons: Selects input of amplifier.  
Treble: Adjusts treble level by means of  
VOL + and -.  
Bass: Adjusts bass level by means of VOL  
+ and -.  
Power: Sets the AMP-50 in standby mode.  
Volume +/-: Adjusts the master volume.  
Some of the amplifier functions can only be performed by means of the remote control. Some functions are  
connected with the selected signal input source. Some buttons on the remote control may therefore not be  
available if the corresponding signal input source has not been selected.  
09  
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FRONT PANEL AND CONNECTIONS  
Front panel  
VOLUME  
Volume -37,5db  
tuner  
POWER  
HEADPHONE  
AUX 1  
AUX 2  
PHO  
TUNER  
DVD  
CD  
FUNCTION  
AMP-50 AMPLIFIER  
1
2
3
4
5
6
7
8
9
10  
11  
1
2
Mains switch: Used to interrupt the mains voltage.  
LED indicator: Lights green when the amplifier is turned on. Lights red when the  
amplifier is in standby mode or in operation.  
Headphone jack: 6-mm jack that suits most headphones.  
Phono: Activates the Phono input.  
Tuner: Activates the Tuner input.  
DVD: Activates the DVD input.  
3
4
5
6
7
CD: Activates the CD input.  
AUX 1: Activates the AUX 1 input.  
AUX 2: Activates the AUX 2 input.  
8
9
Function: Gives the user access to menu functions such as Bass, Treble, Balance  
and Loudness.  
Volume: Adjusts master volume, Bass, Treble, Balance and Loudness.  
10  
11  
10  
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FRONT PANEL AND CONNECTIONS  
Connections  
1
2
3
4
5
6
7
8
9
1
2
Line Output: For connection of an external amplifier.  
Phono: For connection of a record player (Note: Additional ground terminal available  
above inputs).  
3
4
5
6
7
8
Tuner: For connection of FM/DAB radio.  
DVD: For connection of DVD player (Note: Analogue stereo input).  
CD: For connection of CD player.  
AUX 1: For connection of optional equipment.  
AUX 2: For connection of optional equipment.  
Speaker left & right: For connection of loudspeakers.  
Note: - The speaker impedance must be between 4 and 16 Ohm.  
- For optimal sound quality there must be a proper connection between the  
Speaker terminals and the amplifier terminals.  
- The cable ends must not be frayed to avoid that they come into contact with  
Each other or the cabinet back panel.  
AC input: For connection of mains voltage. Make sure that the plug is correctly  
inserted, and that the voltage corresponds to the text printed on the cabinet back panel.  
9
11  
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CONNECTION  
Audio connection layout  
AMP-50 Integrated Amplifier  
Turntable  
Speakers  
DAB/FM Tuner  
CONTROL/TUNING  
POWER  
1
2
3
4
DAB/FM  
AUTOTUNE  
INFO  
PRESS TO SELECT  
DAB-50 DAB/FM-TUNER  
DVD Player  
Subwoofer  
(Optional)  
CD Player  
POWER  
PROGM  
RANDOM  
PREV.  
NEXT  
PLAY/PAUSE  
STOP  
OPEN/CLOSE  
CDP-50 CD-PLAYER  
VCR  
Satelite Receiver  
Speakers  
Slave amplifier  
VOLUME  
POWER  
HEADPHONE  
PHO
TUNER  
DVD  
CD  
AUX  
1
AUX  
2
FUNCTION  
AMP-50 AMPLIFIER  
12  
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OPERATION AND FUNCTIONS  
On, Off and standby  
1
2
Turn on the amplifier by pressing the mains switch.  
Press the standby button on the remote control to switch to standby  
mode. The display will turn off and all functions will be reduced to a  
minimum to make sure that the amplifier uses minimal power. When in  
standby mode the unit only reacts to the standby button of the remote  
control.  
3
If you wish to turn off the unit to avoid any power consumption, you must  
press the mains switch.  
POWER  
HEADPHONE  
2
1
PHON  
+
3
AMP-50 AMPLIFIER  
Protect the environment and turn off the unit after use.  
Selecting the input source  
Turn on the AMP-50.  
Now you can call the input source that is active at the moment. Select Tuner to  
listen to the radio, CD to listen to a CD, DVD, Phono, AUX1 or AUX2 if units have  
been connected to these inputs.  
If you do not know which input has been selected, the LCD display will clearly  
indicate it.  
Note: All inputs are analogue stereo inputs. It means that you cannot connect a  
digital sound source through a digital cable (optical or co-axial).  
PHO
TUNER  
DVD  
CD  
AUX  
1
AUX  
2
FUNCTION  
Press the Phono, DVD, CD, Tuner AUX 1 or AUX 2  
button on the remote control to select the  
corresponding input.  
Press the Phono, DVD, CD, Tuner, AUX 1 or AUX 2  
button on the front panel to select the corresponding  
input.  
+
13  
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OPERATION AND FUNCTIONS  
Using the function menu  
The AMP-50 features a "function menu" that allows  
adjustment of the following: Master volume, bass,  
treble, balance and loudness (see menu structure  
below).  
A description of the individual functions will follow on  
the next few pages.  
Treble control  
+/- 14dB  
Loudness  
On or Off  
Balance control  
-37,5 -0dB L or R  
Volume control  
Default setting  
Bass control  
+/- 14dB  
Volume control  
1
2
Press the VOL+ button to increase volume and press VOL -  
to reduce volume.  
Turn the volume control to the right to increase the volume  
and turn the volume control to the left to reduce the volume.  
Note:  
dB is a professional term for indicating the amplitude of an  
audio signal where 0 dB is the maximum output. You will  
see that the LCD display of the unit indicates - dB up to 0  
dB which is the maximum volume.  
The volume control on the front panel can be turned both  
clockwise and anticlockwise to change the volume. The  
volume control includes 64 steps, from -78,75 dB for  
minimum volume and up to 0 dB for maximum volume.  
The display also features a bar in the second line that  
consists of 16 squares that indicate the volume. The longer  
the bar, the higher the volume.  
+
1
When the volume control is operated, the first line of the  
display will switch from information on input source to  
information on volume. When the volume control is no  
longer operated, information on input source will be  
displayed again after five seconds.  
VOLUME  
2
PHO
TUNER  
DVD  
CD  
AUX  
1
AUX  
2
FUNCTION  
14  
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OPERATION AND FUNCTIONS  
Bass control  
This amplifier features bass control that allows adjustment of the bass level by +/- 14 dB, from 45Hz to  
259Hz.  
Please note that the high bass boost level offered by the bass control may lead to permanent damage to  
your loudspeakers if the high volume is used for prolonged periods.  
Press the BASS button on the remote control to  
activate the bass tone control.  
Press VOL+ and VOL- to adjust the bass level.  
1
2
3
If you wish to adjust the bass level through the front  
panel, you must press the FUNCTION button once  
until information on bass adjustment is displayed.  
Then turn the volume control to adjust the bass level.  
4
Note:  
2
1
If the bass control is not operated within five seconds,  
the display will return to the volume information  
display.  
+
VOLUME  
4
3
PHOO  
TUNER  
DVD  
CD  
AUX  
1
AUX  
2
FUNCTION  
Treble control  
This amplifier features treble control that allows adjustment of the treble level by +/- 14 dB, from 2KHz to  
20KHz.  
Please note that the high treble boost level offered by the treble control may lead to permanent damage to  
your loudspeakers if the high volume is used for prolonged periods.  
Press the TREBLE button on the remote control to  
activate the treble tone control.  
Press VOL+ and VOL- to adjust the treble level.  
1
2
3
If you wish to adjust the treble level through the front  
panel, you must press the FUNCTION button once  
until information on treble adjustment is displayed.  
Then turn the volume control to adjust the treble level.  
4
Note:  
If the treble control is not operated within five seconds,  
the display will return to the volume information  
display.  
2
1
+
VOLUME  
4
3
PHOO  
TUNER  
DVD  
CD  
AUX  
1
AUX  
2
FUNCTION  
15  
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OPERATION AND FUNCTIONS  
Balance control  
This amplifier features balance control that allows adjustment of the volume of one loudspeaker at a time  
by +/- 38,75 dB, divided into 32 steps.  
This function is used to compensate for a non-centred listening position, and makes it possible to get back  
the stereo perspective.  
VOLUME  
2
PHOO  
TUNER  
DVD  
CD  
AUX  
1
AUX  
2
FUNCTION  
1
1
2
Press the FUNCTION button on the front panel three times until information on balance control is  
displayed.  
Turn the volume control to adjust balance.  
Note  
If the balance control is not operated within five seconds, the display will return to the volume  
information display.  
Loudness  
This amplifier features a loudness function that allows boosting of the volume of the low frequencies at low  
volume.  
This function is active at frequencies between 20Hz and 800Hz, and the function is dampened when the  
amplifier volume is increased. When the volume is at the maximum setting, the loudness function is  
completely cut out.  
VOLUME  
2
PHOO  
TUNER  
DVD  
CD  
AUX  
1
AUX  
2
FUNCTION  
1
1
2
Press the FUNCTION button on the front panel four times until information on loudness is displayed.  
Turn the volume control to the right to activate the loudness function and to the left to deactivate the  
loudness function.  
Note  
If the loudness function is not operated within five seconds, the display will return to the volume  
information display.  
16  
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TROUBLESHOOTING  
Troubleshooting  
PROBLEM  
CAUSE/REMEDY  
No power when the amplifier  
Is turned on.  
-Switch on the electric current at the socket.  
-Check that the plug has been correctly inserted into the  
socket.  
-The internal fuse has blown and must be replaced by a  
qualified service technician.  
-The power cord has been damaged and must be replaced  
No sound.  
-The amplifier has not been turned on.  
-The volume control is set at a minimum (see page 14).  
-The speaker cables have not been correctly connected.  
-A wrong input source has been selected.  
-No input source has been connected.  
There is sound in one channel only. -The balance control is not correctly adjusted (see page  
16).  
-The audio input cables have been incorrectly connected  
or damaged.  
-The input source is defective.  
-The speaker cables have been incorrectly connected or  
damaged.  
-The speakers are defective.  
High buzzing.  
-The audio input cables have been incorrectly connected  
or damaged.  
-The ground cable for the record player has not been  
connected.  
-The record player pick-up is defective.  
Weak bass and poor stereo  
perspective  
-The speaker connection is out of phase. Check that the  
positive and negative poles have been correctly  
connected, both at the back of the amplifier and at the  
back of the speaker.  
Distortion of sound.  
-Some of the conductor wires of the speaker cable are in  
contact with each other which causes distortion.  
-Bass and treble controls are set too high in relation to  
speaker specifications.  
-The volume is set too high.  
The LCD display does not display  
any information.  
-The amplifier is defective and should be serviced by a  
qualified technician.  
“ERROR 1” is displayed on the LCD -The amplifier is defective and should be serviced by a  
display  
qualified technician.  
The unit does not switch between  
inputs modes  
- The amplifier is defective and should be serviced by a  
qualified technician.  
17  
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TECHNICAL DATA  
Technical data  
Phono input  
Input impedance  
Input sensitivity  
47 KOhm  
3.8mV  
Line level inputs (Tuner, CD, DVD, AUX1, AUX2)  
Input impedance  
Input sensitivity  
47 Kohm  
200mV  
Line level outputs  
Output impedance  
Line out  
Headphones  
100KOhm  
300Ohm  
Maximum output level  
Line out  
Headphones  
740mV  
1.25V  
Tone control  
Treble  
Bass  
+/- 14dB  
+/- 14dB  
Output power  
2 x 40 Watt at 4 Ohm  
2 x 30 Watt at 8 Ohm  
Frequency response  
Distortion  
10Hz to 63KHz (-3dB)  
<0.05%  
Signal/noise ratio  
>90dB  
Voltage and power consumption  
Dimensions (WxDxH)  
Weight  
See back panel  
430 x 290 x 75mm  
5.3Kg  
We reserve the right to change the technical data and the design of the product without notice as a result of  
further development.  
18  
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