TOA Electronics Stereo Amplifier BG 1030 User Manual

OPERATING INSTRUCTIONS  
MIXER POWER AMPLIFIER  
BG-1015  
BG-1030  
BG-1060  
BG-1120  
Please follow the instructions in this manual to obtain the optimum results from this unit.  
We also recommend that you keep this manual handy for future reference.  
 
• Be sure to replace the unit's terminal cover after  
connection completion. Because high voltage is  
applied to the speaker terminals, never touch these  
terminals to avoid electric shock.  
• When unplugging the power supply cord, be sure  
to grasp the power supply plug; never pull on the  
cord itself. Operating the unit with a damaged  
power supply cord may cause a fire or electric  
shock.  
• Avoid installing or mounting the unit in unstable  
locations, such as on a rickety table or a slanted  
surface. Doing so may result in the unit falling  
down, causing personal injury and/or property  
damage.  
• When moving the unit, be sure to remove its power  
supply cord from the wall outlet. Moving the unit  
with the power cord connected to the outlet may  
cause damage to the power cord, resulting in fire or  
electric shock. When removing the power cord, be  
sure to hold its plug to pull.  
When the Unit is in Use  
• Should the following irregularity be found during  
use, immediately switch off the power, disconnect  
the power supply plug from the AC outlet and  
contact your nearest TOA dealer. Make no further  
attempt to operate the unit in this condition as this  
may cause fire or electric shock.  
• Avoid installing the unit in humid or dusty locations,  
in locations exposed to the direct sunlight, near the  
heaters, or in locations generating sooty smoke or  
steam as doing otherwise may result in fire or  
electric shock.  
When the Unit is in Use  
· If you detect smoke or a strange smell coming  
from the unit.  
· If water or any metallic object gets into the unit  
· If the unit falls, or the unit case breaks  
· If the power supply cord is damaged (exposure of  
the core, disconnection, etc.)  
• Do not place heavy objects on the unit as this may  
cause it to fall or break which may result in  
personal injury and/or property damage. In  
addition, the object itself may fall off and cause  
injury and/or damage.  
· If it is malfunctioning (no tone sounds.)  
• Make sure that the volume control is set to  
minimum position before power is switched on.  
Loud noise produced at high volume when power is  
switched on can impair hearing.  
• To prevent a fire or electric shock, never open nor  
remove the unit case as there are high voltage  
components inside the unit. Refer all servicing to  
your nearest TOA dealer.  
• Do not operate the unit for an extended period of  
time with the sound distorting. This is an indication  
of a malfunction, which in turn can cause heat to  
generate and result in a fire.  
• Do not place cups, bowls, or other containers of  
liquid or metallic objects on top of the unit. If they  
accidentally spill into the unit, this may cause a fire  
or electric shock.  
• Contact your TOA dealer as to the cleaning. If dust  
is allowed to accumulate in the unit over a long  
period of time, a fire or damage to the unit may  
result.  
• Do not insert nor drop metallic objects or  
flammable materials in the ventilation slots of the  
unit's cover, as this may result in fire or electric  
shock.  
• If dust accumulates on the power supply plug or in  
the wall AC outlet, a fire may result. Clean it  
periodically. In addition, insert the plug in the wall  
outlet securely.  
CAUTION  
• Switch off the power, and unplug the power supply  
plug from the AC outlet for safety purposes when  
cleaning or leaving the unit unused for 10 days or  
more. Doing otherwise may cause a fire or electric  
shock.  
When Installing the Unit  
• Never plug in nor remove the power supply plug  
with wet hands, as doing so may cause electric  
shock.  
ATTENTION  
L'appareil ne doit pas être exposé aux éclaboussures ou écoulements et tous objets remplis de liquide, tels  
que vases, ne doivent pas être sur l’appareil.  
3
 
TABLE OF CONTENTS  
1. GENERAL DESCRIPTION ............................................................................. 5  
2. FEATURES .......................................................................................................... 5  
3. NOMENCLATURE AND FUNCTIONS  
Front ......................................................................................................................... 6  
Rear .......................................................................................................................... 7  
4. INPUT CONNECTIONS ................................................................................... 8  
5. OUTPUT CONNECTIONS .............................................................................. 9  
6. PLUG-IN MODULE INPUT PORT  
6.1. Module Installation ............................................................................................ 9  
6.2. Module Selector Switch Settings ...................................................................... 10  
7. EQUIPMENT SETTINGS  
7.1. Mute Function  
7.1.1. Mute operation A .................................................................................... 10  
7.1.2. Mute operation B .................................................................................... 11  
7.2. TEL Input Impedance Selection ....................................................................... 11  
7.3. AUX, PROGRAM, MODULE (BGM) Output Selection ..................................... 12  
7.4. Phantom Power On/Off Setting for Microphone Input ...................................... 12  
7.5. Changing MIC and PROGRAM Input Types  
7.5.1. MIC input ................................................................................................ 12  
7.5.2. Program input ........................................................................................ 13  
8. INSTALLATION ................................................................................................. 13  
9. RACK MOUNTING ........................................................................................... 13  
10. CONTROL SETTINGS .................................................................................... 14  
11. DIMENSIONAL DIAGRAM ............................................................................ 14  
12. BLOCK DIAGRAM ........................................................................................... 15  
13. SPECIFICATIONS ............................................................................................ 16  
Accessories ............................................................................................................. 16  
Optional products .................................................................................................... 16  
4
 
1. GENERAL DESCRIPTION  
TOA's BG-1015, BG-1030, BG-1060, and BG-1120 Mixer Power Amplifiers can mix up to a total of 5  
independent input signals. Power output is rated at 15 W for the BG-1015, 30 W for the BG-1030, 60 W for the  
BG-1060, and 120 W for the BG-1120. All units are ideal for use in sound systems requiring small power  
outputs.  
2. FEATURES  
• 3 balanced inputs, 1 unbalanced input, and 1 module input  
• Phantom-powered microphone input  
• Telephone paging input  
• Compatible with all 900 Series modules (except for mute buss functions)  
• Wide frequency response ranging from 50 Hz to 20 kHz  
• Low distortion and low noise level  
• Excellent output regulation  
• Three different speaker outputs: 4 , 25 V, and 70 V  
• MOH (Music On-Hold) output: 1 V, 600 Ω  
• 1W output terminal: 8 Ω  
• Independent bass and treble controls  
• Input and output terminals for connection of signal processors  
• Two different mute functions  
• Overcurrent and thermal protection circuitries  
• Compact and lightweight  
• Desktop or 19" rack mountable  
5
 
3. NOMENCLATURE AND FUNCTIONS  
[Front]  
5
6
7
8
9
3
4
MIC  
TEL  
PROGRAM  
AUX  
MODULE  
SIGNAL  
PEAK  
POWER  
2
1
0
10  
0
10  
0
10  
0
10  
0
10  
ON  
OFF  
INTEGRATED AMPLIFIER BG-1120  
This figure represents the BG-1120.  
1. Power switch  
5. Microphone input volume control  
Press to turn ON the power. Press again to turn  
the power OFF.  
Adjusts the microphone input volume. Turn  
clockwise to increase and counterclockwise to  
decrease.  
Note  
Amplifier operation is enabled about 3 seconds  
after the power switch is pressed.  
6. Telephone paging input volume control  
Adjusts the telephone paging input volume. Turn  
clockwise to increase and counterclockwise to  
decrease.  
2. Power indicator  
Lights green when the power is switched on.  
7. Program input volume control  
3. Signal level indicator  
Adjusts the Program input volume. Turn clockwise  
to increase and counterclockwise to decrease.  
Lights green when the speaker output signal level  
exceeds 20 dB.  
8. AUX input volume control  
4. Peak indicator  
Adjusts the AUX input volume. Turn clockwise to  
increase and counterclockwise to decrease.  
Lights when the output signal level exceeds the  
point at which the signal begins to distort. If this  
indicator remains lit, reduce the volume at each  
volume control so that the indicator only lights  
momentarily.  
9. Module input volume control  
Adjusts the Module input volume. Turn clockwise  
to increase and counterclockwise to decrease.  
Protection function to be noted on operation  
When the temperature of unit's internal heat sink exceeds the specified limit, the protection circuit is  
activated and the output is disconnected from the circuit. Output is automatically restored when the heat  
sink cools down below the temperature limit.  
6
 
[Rear]  
13  
14  
15 17 19  
18  
22 23  
24  
Blank panel  
120V  
MAX 500W  
60Hz  
SENSE  
UNIT  
BREAKER  
OUTLET  
BREAKER  
MUTE  
MODULE  
PUSH  
RESET  
PUSH  
RESET  
4
A
4
A
0
10  
A
B
PAGE  
BGM  
PROGRAM  
TEL  
MIC  
BASS  
0
TREBLE  
0
12  
11  
G
COM HOT  
G
COM HOT  
G
COM HOT NC  
AUX  
UNSWITCHED  
+
+
27  
OUTPUT 120  
W
OUTPUT  
1
W
MOH  
MUTE  
120V  
60Hz  
PREAMP  
OUT  
POWER  
IN  
150W  
COM 425V 70V  
8COM 600COM  
G
OUTPUT  
1
W
MOH  
0
10  
0
10  
CLASS  
2
WIRING  
10  
28  
20 21  
25 26  
This figure represents the BG-1120.  
16  
10. Power cord  
15. Input terminal block  
Connect this cord to an AC outlet of 120 V AC.  
Used for connection of MIC, TEL and  
PROGRAM inputs. (Refer to p. 8.)  
11. Ground terminal  
A functional ground terminal.  
16. Output terminal block  
Used for connection of speaker outputs, 1 W  
output, MOH (Music On-Hold) output, and Mute  
control signals. (Refer to p. 9 and p. 10.)  
12. AC outlet [UNSWITCHED]  
Continuously supplies up to 500 W of AC power  
to connected external equipment.  
17.Sensitivity control  
13. Breaker [UNIT]  
Adjusts the sensitivity of the mute circuit. Rotate  
clockwise to increase sensitivity, and  
counterclockwise to reduce sensitivity.  
Cuts off the AC power to the unit when its input  
current exceeds the allowable value.  
Note  
18. Bass control  
The yellow button in the breaker pops out to  
indicate that the breaker has tripped. After  
turning off the power and eliminating the cause  
of the breaker trip, press the button to reset the  
breaker.  
Adjusts the bass frequency band level of speaker  
outputs for MODULE (BGM), PROGRAM, and  
AUX input signals. Rotate clockwise to increase  
bass output, and counterclockwise to reduce it.  
The center position provides flat characteristics.  
14. Breaker [OUTLET]  
19. Treble control  
Cuts off the AC power supply from the AC outlet  
Adjusts the treble frequency band level of  
speaker outputs for MODULE (BGM),  
PROGRAM, and AUX input signals. Rotate  
clockwise to increase treble output, and  
counterclockwise to reduce it. The center  
position provides flat characteristics.  
if current output exceeds 4 A.  
Note  
The yellow button in the breaker pops out to  
indicate that the breaker has tripped. After  
turning off the power and eliminating the cause  
of the breaker trip, press the button to reset the  
breaker.  
7
 
20. 1 W output volume control  
25.Preamplifier output terminal [PREAMP OUT]  
Used for connection of output signals to external  
signal processing equipment such as limiters and  
equalizers.  
Adjusts the 1 W OUTPUT level. Rotate clockwise  
to increase and counterclockwise to decrease.  
21. MOH output volume control  
Adjusts the MOH (Music On-Hold) output signal  
level. Rotate clockwise to increase and  
counterclockwise to decrease.  
26. Power amplifier input terminal [POWER IN]  
Used for connection of input signals from  
external signal processing equipment such as  
limiters and equalizers.  
22. Mute selector switch  
Changes the type of mute operation.  
(Refer to p. 10.)  
27.Module input port  
Optional 900 Series modules can be installed  
here.  
23. Module selector switch  
Note  
Selects the output terminal for the module signal.  
Set the switch to the PAGE position when using  
the paging module, and to the BGM position  
when using the BGM module.  
For details concerning 900 Series modules,  
contact your nearest TOA dealer.  
28. Terminal cover  
Make sure that the terminal cover is reattached  
after speaker output terminal connection  
completion.  
24. AUX input terminals (2P RCA pin jack)  
An internal mixing type of jack.  
Used for connection of external equipment input  
signals. (Refer to p. 8.)  
4. INPUT CONNECTIONS  
[MIC input connections]  
G
COM HOT  
MIC  
H
C
E
[TEL and PROGRAM input connections]  
G
COM HOT  
H
Input source  
C
E
[AUX input connections]  
AUX  
H
E
H
E
Input source  
Input source  
8
 
5. OUTPUT CONNECTIONS  
[Output terminals]  
Each amplifier has 3 speaker outputs: 4 , 25 V and 70 V. Use only one of these outputs for connection.  
Class 2 wiring may be used.  
Note: The impedance in the figure below represents the total impedance of the speaker system.  
COM 425V 70V  
COM 425V 70V  
COM 425V 70V  
5.2 (BG-1120)  
10.4 (BG-1060)  
21 (BG-1030)  
42 (BG-1015)  
40.8 (BG-1120)  
81.7 (BG-1060)  
163 (BG-1030)  
330 (BG-1015)  
4 Ω  
25 V line  
70 V line  
[MOH output connections]  
[OUTPUT 1 W output connections]  
The MOH output is rated at 1 V/600 Ω  
The OUTPUT 1 W output is rated at 1 W/8 Ω  
8COM  
600COM  
G
E
C
H
8Ω  
6. PLUG-IN MODULE INPUT PORT  
A single port for TOA plug-in modules is located on the unit's rear panel. Any 900 Series plug-in module can  
be inserted into this port.  
Note: Consult your nearest TOA dealer for selection of appropriate module types.  
Be sure to turn off the power before performing the following operations:  
6.1. Module Installation  
Mixer power amplifier  
Step 1. Remove the blank panel covering the module  
slot on the rear panel.  
Step 2. Align the module board with the top and  
bottom guide rails, and press in.  
Step 3. Using the screws supplied with the module,  
secure the module to the rear panel.  
Guide rail  
900 Series plug-in module  
Module mounting screw (supplied with the module)  
9
 
6.2. Module Selector Switch Settings  
Set the rear panel-mounted Module Selector Switch to either the PAGE or BGM position, depending on the  
output terminal to which the module signal is to be sent.  
MODULE  
PAGE: Signals from the installed module are only sent to the  
speaker outputs.  
PAGE  
BGM  
BGM: The terminal to which the signal from the module is to  
be output differs depending on jumper wire settings  
inside the unit. (Refer to p. 12.)  
Module selector switch  
Set both the bass and treble controls to the center position when using the equalizer module.  
Caution: Make sure that the supplied blank panel is placed over the connector port when the port is not in  
use.  
7. EQUIPMENT SETTINGS  
Caution: Be sure to leave settings to a qualified technician.  
7.1. Mute Function  
MUTE  
The unit features 2 different mute functions, A and B. Mute A or  
B can be selected with the rear panel-mounted Mute Selector  
Switch.  
A
B
Mute selector switch  
7.1.1. Mute operation A  
The mute function can be activated either by the TEL, MIC, or MODULE (PAGE) input signal, or by shorting  
the rear panel-mounted mute terminals.  
[Mute signal settings]  
Input signals to activate the mute function can be selected by the internal jumper wire settings. The TEL, MIC,  
and MODULE (PAGE) input signals are all factory-preset (Jumpers JP207, JP208, and JP209 are set) as  
muting signals.  
Cut off the jumper wire corresponding to the input signal to be disabled for muting.  
In any case, shorting the rear-mounted Mute terminals can also actuate the mute function.  
JP208  
JP207  
JP209  
T203  
T202  
T201  
Preamplifier board  
Note  
If Module Input is selected, the mute function can only be used when the Module Selector Switch is set to the  
PAGE position.  
10  
 
[Muted signal settings]  
Use the unit's internal jumper switch JP301 to select the signal to be muted. Select either the input signal from  
the TEL, MIC, and MODULE (PAGE) terminals or from the AUX, PROGRAM, and MODULE (BGM) terminals  
as the signal to be muted.  
Jumper switch JP301  
PAGE: TEL, MIC, MODULE ( PAGE)  
BGM: AUX, PROGRAM, MODULE ( BGM)  
Note: Selection is factory-preset to the input from AUX, PROGRAM,  
Preamplifier output board  
and MODULE (BGM) terminals.  
7.1.2. Mute operation B  
The mute function can be controlled by way of the rear panel-mounted Mute terminal.  
Note: The mute function cannot be controlled by means of an input signal.  
[Mute terminal]  
: Channel is ON.  
: Signal is muted.  
Close  
Open  
MIC  
MIC  
TEL  
TEL  
MODULE (PAGE)  
AUX  
MODULE (PAGE)  
AUX  
PROGRAM  
MODULE (BGM)  
PROGRAM  
MODULE (BGM)  
7.2. TEL Input Impedance Selection  
The impedance is factory-preset to 10 k. To switch to 600 , change the position of the unit's internal jumper  
switch JP204.  
600 10 kΩ  
T203  
T202  
T201  
Jumper switch JP204  
Preamplifier board  
11  
 
7.3. AUX, PROGRAM, MODULE (BGM) Output Selection  
Operations shown in the following table can be enabled with the unit's internal jumper settings.  
[OUTPUT 15 W/30 W/60 W/120 W]  
[OUTPUT 1 W, MOH]  
Jumpered  
Cut  
Jumpered  
Cut  
Jumpered  
Cut  
AUX:  
AUX:  
ON  
OFF  
ON  
Jumpered  
AUX:  
AUX:  
ON  
OFF  
ON  
JP210  
JP211  
JP212  
JP213  
Cut  
PROGRAM:  
PROGRAM:  
MODULE (BGM): ON  
MODULE (BGM): OFF  
Jumpered  
PROGRAM:  
PROGRAM:  
MODULE (BGM): ON  
MODULE (BGM): OFF  
JP214  
Cut  
OFF  
OFF  
Jumpered  
JP215  
Cut  
[OUTPUT 1 W, MOH]  
[OUTPUT 15 W/30 W/60 W/120 W]  
JP213: AUX  
JP214: PROGRAM  
JP215: MODULE (BGM)  
JP212: MODULE (BGM)  
JP211: PROGRAM  
JP210: AUX  
Preamplifier board  
T203  
T202  
T201  
7.4. Phantom Power On/Off Setting for Microphone Input  
The phantom power is set for ON or OFF by the unit's internal jumper switch JP201.  
It is factory-preset for OFF.  
Preamplifier board  
OFF ON  
T203  
T202  
T201  
Jumper switch JP201  
7.5. Changing MIC and PROGRAM Input Types  
Both MIC and PROGRAM inputs can be changed from electronically-balanced to transformer-balanced types  
in the procedures as follows.  
7.5.1. MIC input  
Install an optional IT-450 Line Transformer in the specified location on the printed circuit board.  
Cut off the JP202 and JP203 jumper wires.  
JP202  
JP203  
T203  
T202  
Preamplifier board  
Line Transformer IT-450  
12  
 
7.5.2. Program input  
Install an optional IT-453A Line Transformer in the specified location on the printed circuit board.  
Cut off the JP205 and JP206 jumper wires.  
Preamplifier board  
T202  
T201  
JP206  
JP205  
Line Transformer  
IT-453A  
8. INSTALLATION  
Keep the unit's all sides at least 10 cm away from  
objects that may obstruct air flow to prevent the  
unit's temperature from rising.  
At least  
10 cm  
MIC  
TEL  
PROGRAM  
AUX  
MODULE  
SIGNAL  
PEAK  
POWER  
0
10  
0
10  
0
10  
0
10  
0
10  
ON  
OFF  
INTEGRATED AMPLIFIER BG-1120  
At least  
10 cm  
At least  
10 cm  
9. RACK MOUNTING  
To mount the amplifier in a standard 19" equipment rack, use the optional MB-1000 Rack Mouting Kit.  
Attach the MB-1000 to the amplifier using the supplied 4 screws. When using other screws, ensure that each  
screw is shorter than 16 mm.  
M4 x 16 Machine screw included in MB-1000  
MB-1000  
Amplifier  
Amplifier  
PF-511 Perforated Panel (1-unit size)  
Amplifier  
Note  
Mount the Perforated Panel PF-511 above and below each amplifier  
for ventilation inside the rack.  
Amplifier  
About the perforated panel, consult your TOA dealer.  
Amplifier  
13  
 
10. CONTROL SETTINGS  
Output levels are adjustable with individual volume controls. For music play or announcement, adjust the  
corresponding volume control so that the signal indicator lights intermittently. Note that the sound quality is  
downgraded when the peak indicator remains lit.  
To prevent the accidental change of the settings of input volume controls, remove their knobs after setting  
them to the desired position and attach the volume control covers instead.  
L
E
T
C
I
M
0
0
Volume control cover (Accessory)  
0
1
LIFIER BG-1120  
TED AMP  
GRA  
TE  
IN  
Volume control knob  
11. DIMENSIONAL DIAGRAM (Applicable to all models)  
Unit: mm  
120V 60Hz  
MAX 500W  
SENSE  
UNIT  
BREAKER  
1.25A  
OUTLET  
BREAKER  
4A  
MUTE  
MODULE  
PUSH  
RESET  
PUSH  
RESET  
0
10  
A
B
PAGE  
BGM  
PROGRAM  
TEL  
MIC  
BASS  
0
TREBLE  
0
G
COM HOT  
G
COM HOT  
G
COM HOT NC  
AUX  
UNSWITCHED  
+
+
OUTPUT 15W  
OUTPUT 1W  
MOH  
MUTE  
120V  
40W  
50Hz  
PREAMP  
OUT  
POWER  
IN  
COM 4  
25V 70V  
8COM 600COM  
G
OUTPUT 1W  
MOH  
0
10  
0
10  
CLASS  
2
WIRING  
model BG-1015  
264  
280  
266.5  
MIC  
TEL  
PROGRAM  
AUX  
MODULE  
SIGNAL  
PEAK  
POWER  
0
10  
0
10  
0
10  
0
10  
0
10  
ON  
OFF  
INTEGRATED AMPLIFIER BG-1015  
14  
 
12. BLOCK DIAGRAM  
15  
 
13. SPECIFICATIONS  
BG-1015  
15 W  
BG-1030  
120 V AC, 60 Hz  
30 W  
BG-1060  
60 W  
BG-1120  
120 W  
Model No.  
Power Source  
Rated Output  
Power Consumption  
Rated output  
Based on UL/CSA standards  
Frequency Response  
Total Harmonic Distortion  
Input  
50 W  
40 W  
80 W  
60 W  
160 W  
100 W  
260 W  
150 W  
50 20,000 Hz  
0.05% at 1 kHz, rated output  
Mic:  
Tel:  
60 dB*1, 600 , electrically balanced, M3 screw terminal*2  
20 dB*1, 10 k/600 , balanced, M3 screw terminal*2  
Program: 10 dB*1, 10 k, electrically-balanced, M3 screw terminal*2  
Aux:  
10 dB*1, 47 k, unbalanced, 2P RCA pin jack (internal mixing)  
Module: 20 dB*1, 10 k, unbalanced, card edge connector  
Power IN: 0 dB*1, 10 k, unbalance, RCA pin jack  
Mute:  
M3 screw terminal*2  
Main:  
Sub:  
MOH:  
4 , 25 and 70 V, balanced, M3 screw terminal*2  
1 W/8 , unbalanced, M3 screw terminal*2  
0 dB*1, 600 , balanced, M3 screw terminal*2  
Output  
Preamp OUT: 0 dB*1, 600 , unbalance, RCA pin jack  
Under 2 dB, no load to full load  
Mic: 60 dB, Telephone: 75 dB, Program: 75 dB, Aux: 75 dB, Module: 75 dB  
Output Regulation  
S/N Ratio  
(Band Pass: 20 20,000 Hz, Tone Controls: Centered)  
Bass: 10 dB at 100 Hz, Treble: 10 dB at 10 kHz  
Tone Controls  
Controls affect only program input, aux input and module (BGM) input  
Variable by heat sink temperature  
Power LED, Signal LED, Peak LED  
Cooling Fan Speed  
Indicator  
Self protection, with 1 AC breaker (outside)  
Protection  
Automatic electronic drive limiter  
Other Feature  
Output disconnected for approx. 3 seconds after the unit is turned on  
Panel: ABS resin, black  
Finish  
Case: Steel plate, black, paint  
264 (w) x 107.4 (h) x 280 (d) mm  
Dimensions  
Weight  
(without input module)  
4.5 kg  
4.8 kg  
5.6 kg  
6.4 kg  
*1 0 dB = 1 V  
2 Distance between barriers on the above screw terminal: 6 mm  
*
Note: The design and specifications are subject to change without notice for improvement.  
Accessories  
Volume control cover ........................................... 5  
Optional products  
Line transformer: IT-450  
Line transformer: IT-453A  
133-12-819-0B  
 

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