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3G Audio AK80 User Manual

Made by: 3G Audio
Type: User Manual
Category: Amplifier
Pages: 12
Size: 0.16 MB

 

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ED-3G-MA-060724-001

AK80

STEREO AMPLIFIER

User's manual

 


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 Thank you for purchasing our products. Please read this manual carefully for 

your correct operation of this equipment, and keep this manual for future 
reference.

 For your safety please don't open the rack to avoid electric shock due to high 

voltage inside. Consult professionals for maintenance help.

 Keep the instrument off rain or humidity.

 This instrument must work in places with good air flow.

 Please check whether local voltage supply can meet the requirement of this 

instrument.

 Please pull out the plug when this instrument is not in use for a long time.

 Load must be configured following this manual. Don't let the instrument work 

overloaded for a long time.

PRECAUTIONS

 


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7

9

10

11

11

4

4

5

7

6

8

8

8

INTRODUCTION

INSTALLATION

Features
Signal Cables

Speaker Cable Connection
Input Connection
Speaker Cable Connection In Stereo Mode
Speaker Cable Connection In Mono Mode
Speaker Cable Connection In Bridge Mode

TABLE OF CONTENTS

OPERATION

ADDITIONAL 
DESCRIPTION

Safety Instructions
Technical Specifications
Accessories

Front Panel

Rear Panel

 


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4

INTRODUCTION

Please read this manual carefully before you begin to use this instrument, and 
keep the manual for future reference.

FEATURES

 Ultra compact design, convenient for use.

 Completely concealed adjustment button design, effective for status protection.

 Adopting the amplification circuit targeting high sound quality, excellent in 

expressing musical details.

 Very low distortion.

 Full protection function & high reliability.

SIGNAL CABLES

White 

Red

When connecting with RCA connectors, 
please ensure that the red connector is 
plugged in the red socket, and the white 
connector in the white socket.

 


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  A K 8 0

SIGNAL

LEFT

RIGHT

MONO BRIDGE

TREBLE

BASS

STEREO  PRO  AMPLIFIER

POWER

ON

OFF

1

Bass Adjustment for L/R Channel

Turn this knob clockwise(  )/anticlockwise(  ) when you feel the bass 
 volume is not enough/too much.

2

HF Adjustment for L/R Channel

Turn this knob clockwise(  )/anticlockwise(  ) when you feel the 
HF volume is not enough/too much.

3

Power Supply Indicator

This indicator will be on when 
the power is turned on.

4.   Power Supply Switch

Power will be switched on/off when you 
press ON/OFF end of this button.

5.   R Channel Volume Adjustment
      (Volume Adjustment for Mono Bridge Mode)

     Volume of R Channel (in Mono / Bridge Mode)  
     is increased/reduced by turning this knob 
     clockwise(  )/anticlockwise(  ) .

6.   L Channel Volume Adjustment 
      (Volume Adjustment for Mono Bridge Mode)

     Volume of L Channel (in Mono / Bridge Mode)
    is increased/reduced by turning  this knob 
     clockwise(  )/anticlockwise(  ) .

7.   Signal Indicator

The indicator will be on when there is stereo or 
mono (in bridge mode) signal input.

FRONT PANEL

 


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9

Full Range/Low cut Switch

Turn this switch you can select between full range 
and low cut status. 

8

Mode Switch

Turn this switch you can select stereo, mono, 
or bridge mode.

6

AC  

220V/50Hz

Fuse  

T2A/250V

R

+

R

L

+

L

BRIDGE 

B

R

ID

G

E

 

P

A

R

A

L

L

E

L

S

T

E

R

E

O

F

U

L

L

 R

A

N

G

E

L

F

 L

IF

T

E

R

 (

10

0

H

z

)

R

L

OUTPUT

INPUT

PARALLEL

BRIDGE 

R

L

STEREO DIGITAL KARAOKE AMPLIFIER
MODEL  NoA

K80

ELDER AUDIO MANUFACTORY

AC Rating:~110v/~220v,50/60Hz

POWER

8/

28

0W       

8/

 12

40W(BRIDGE)

4/

11

20W

CAUTION

R I S K  O F  E L E C T R I C  S H O C K

D O  N O T  O P E N

1

Power Supply Socket and fuss box 

Power supply: AC220/50Hz, no other option is suitable
Fuss: T250V/IA(

5x20mm)

Please purchase parts for maintenance according to the above specifications.

3

Signal Output Socket for L Channel

4

Positive Terminal for L Channel Power Output

5

Positive Terminal for R Channel 

      Power Output

6

Negative Terminal for R Channel 

      Power Output

7

Negative Terminal for L Channel 

      Power Output

10

Signal Output Socket for R Channel

11

(Mono / Bridge Mode) Signal Input Socket for R Channel

2

Signal Input Socket for L Channel

REAR PANEL

 


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LD

DVD

VCD

AUX

AC  

220V/50Hz

Fuse  

T2A/250V

R

+

R

L

+

L

BRIDGE 

B

R

ID

G

E

 

P

A

R

A

L

L

E

L

S

T

E

R

E

O

F

U

L

L

 R

A

N

G

E

L

F

 L

IF

T

E

R

 (

10

0

H

z

)

R

L

OUTPUT

INPUT

PARALLEL

BRIDGE 

R

L

STEREO DIGITAL KARAOKE AMPLIFIER
MODEL  NoA

K80

ELDER AUDIO MANUFACTORY

AC Rating:~110v/~220v,50/60Hz

POWER

8/

28

0W       

8/

 12

40W(BRIDGE)

4/

11

20W

CAUTION

R I S K  O F  E L E C T R I C  S H O C K

D O  N O T  O P E N

INSTALLATION

SPEAKER CABLE CONNECTION

INPUT CONNECTION

1.Push down the eject button to open the cable 
   clip and insert the cable end in the hole. 

2.Let the clip resume its original status, ensure 
      t h e  c a b l e  e n d  i s  t i g h t e n e d .  S e l e c t  s u i t a b l e 
   speaker cable before connecting. 

Attention: Jut of cable end cannot touch adjacent cable.

This amplifier can be connected to two clusters of speakers. Please check 
whether the polarity of the speaker cables is correct. Incorrect connection 
with reversed polarity will cause unnatural sound and bass loss.

Signals can be 
accessed via 
the output port

Signals can be accessed from LD, DVD, VCD, or AUX.

Recorder or 

loudspeaker 

equipment

 


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8

INSTALLATION

SPEAKER CABLE CONNECTION IN STEREO MODE

The mode switch must be located to  "Stereo " .

SPEAKER CABLE CONNECTION IN MONO MODE

The mode switch must be located to  "Mono " .

SPEAKER CABLE CONNECTION IN BRIDGE MODE

The mode switch must be located to "Bridge" .

 


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The amplifier is ready for use when you finish connecting it to speakers and 
plugging in the signal connector following the manual. Here are the instructions 
for correct operation of the instrument:

OPERATION

1. Switch on the power (4) (see page 5).

2. Adjust volume

Adjust volume in stereo mode:
Turn the L channel volume knob (6) with a slotted screwdriver clockwise/anticlockwise 
to increase/reduce the volume until you feel satisfied. 

Turn the R channel volume knob (5) with a slotted screwdriver clockwise/anticlockwise 
to increase/reduce the volume until you feel satisfied. 

Adjust volume in mode/bridge mode: 
Turn the R channel volume knob (5) with a slotted screwdriver clockwise/anticlockwise 
to increase/reduce the volume until you feel satisfied. 

3.Tone adujustment

Adjust tone in any mode:
Turn the bass volume knob (5) with a slotted screwdriver clockwise/anticlockwise 
to increase/reduce the volume until you feel satisfied. 
Turn the treble channel volume knob (5) with a slotted screwdriver clockwise/anticlockwise

 to increase/reduce the volume until you feel satisfied. 

4.Feet installation

Optional feet are available for standing the amplifier.

You need not mount the feet if you want to install the amplifier in the rack of a case. 
If you want to lay the amplifier on a desk or other horizontal surface you must 
mount the feet according to the following steps:

  Take out the (four) feet from the package.
  Insert the feet in the mounting holes at the bottom of the amplifier
  Insert the locking pins in the center of the feet.

1

2

3

 


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10

ADDITIONAL DESCRIPTION

DO NOT OPEN THE COVER

Do not open the cover to avoid the risk of electric shock caused 
by high voltage parts in the product. Any problems caused by 
user's wrong actions are out of warranty. 

AVOID OBJECT AND LIQUID ENTRY

Take care that objects do not fall into and that liquids are not 
spilled into the inside of the product . If the object or liquid enter 
the product , please ask qualified personnel to check it.

Please hold the plug when pull out or plug in the cord. Do not 
pull out or touch the cord with wet hand, or it will cause the risk 
of electric shock. Power supply cords should be routed so they 
are not likely to be walked upon or pinched by items placed on 
or again st them. When removing the cord from a power outlet 
be sure to remove it by holding the plug attachment and not By 
pulling on the cord.

DO NOT DAMAGE THE POWER CORD

SAFETY INSTRUCTIONS

ABNORMAL STATUS

In the event of abnormal noise and smell, please put off 
the power supply and pull out the cord, please ask 
qualified personnel to check it.

NONUSE FOR A LONG TIME

When nonuse it for a long time, please put off the power 
supply and pull out the cord to avoid the unexpected 
dangers.

 


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0.03

0.05

12V/

S

200

100db

1V

6dB(10KHz)  

5.6Kg

8V

ADDITIONAL DESCRIPTION

TECHNICAL SPECIFICATIONS

ACCESSORIES

Please check whether the accessories are complete after you open the 
package according to the list below:

Feet   

4pcs

User's manual  

1pc

Warranty card 

1pc

Certificate

1pc

MAINTENANCE

 The equipment can be cleaned with dry cotton cloth. If the equipment is 

abnormally dirty, please clean it with a piece of cotton cloth dipped in detergent 
for 5 to 6 seconds, and finally dry it with a piece of dry cloth.

 Don't use alcohol, insecticide, or any other volatile or corrosive liquid to clean 

the equipment, which will cause colour fade or flake-off of the equipment surface.

 When the equipment is not used for a long time, please keep it in an appropriate 

dry place.

Distortion Limit Output Power:

 2x80W (THD+N: 0.5%, with 8

 load, in stereo/mono mode)

 2x120W (THD+N: 0.5%, with 4

 load, in stereo/mono mode)

240W (THD+N: 0.5%, with 8

 load, in bridge mode)

Frequency Response: 

20Hz~20KHz(+/-3dB)with low-cut switch at GENERAL location

100Hz~20KHz(+/-3dB)with low-cut switch at LOWCUT location

Load Impedance:

      8

 (in mono/stereo mode), 4

 (in mono/stereo mode),    

      8

 (in bridge mode)

Harmonic Distortion:

Intermodulation Distortion

Slew Rate:

Damping Factor:

Signal to Noise Ratio:

Minimum Electromotive Force:

Overload Electromotive Force:

HF Compensation:

Dimensions(WxDxH):

Net Weight:

LF Compensation:

6dB(100Hz)

430x160x43.8mm(without feet)

:

 


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STEREO AMPLIFIER

www.elderaudio.com