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This product was designed and manufactured to meet 
strict quality and safety standards. There are, however, 
some installation and operation precautions which 
you should be particularly aware of.

1)  Read Instructions--All the safety and operating 
     instructions should be read before the appliance 
     is operated.

2)  Retain Instructions--The safety and operating ins-
     tructions should be retained for future reference.

3)  Heed Warnings--All warnings on the appliance 
     and in the operating instructions should be 
     adhered to.

4)  Follow Instructions--All operating and use instr-
     uctions should be followed.

5)  Water and Moisture--The appliance should not 
     be used near water -- for example, near a bathtub,
     wash-bowl.Kitchen sink, laundry tub, in a wet 
     basement, or near a swimming pool, etc.

6)  Carts and Stands--The appliance should be used 
     only with a cart or stand that is recommended by
     the manufacturer.

7)  An appliance and cart combination should be 
     moved with care. Quick stops, excessive force, 
     and uneven surfaces may cause the appliance 
     and cart combination to overturn.

8)  Wall or Ceiling Mounting--The appliance should 
     be mounted to a wall or ceiling only as recom-
     mended by the manufacturer

9.Ventilation--The appliance should be situated so 
   that its location or position does not interfere with 
   its proper ventilation. For example, the appliance
   should not be situated on a bed, sofa,rug,or similar
   surface that may block the ventilation openings;or, 
   placed in a built-in installation,such as a bookcase
   or cabinet that may impede the flow of air through 
   the ventilation openings.

10)  Heat--The appliance should be situated away 
       from heat sources such as radiators,heat 
       registers,stoves,or other appliances(including 
       amplifiers)that produce heat.

11)  Power Sources--The appliance should be con-
       nected to a power supply only of the type des-
       cribed in the operating instructions or as mar-
       ked on the appliance.

12) Grounding or Polarization-The precautions that
       should be taken so that the grounding or pola-
       rization means of an appliance is not defeated.

13) Power-Cord Protection-Power-supply cords sh-
      ould be routed so that they are not likely to be 
      walked on or pinched by items placed upon or 
      against them,paying particular attention to co-
      rds at plugs,convenience receptacles,and the 
      point where they exit from the appliance.

14) Cleaning-The appliance should be cleaned on-
       ly as recommended by the manufacturer.

15) Power Lines-An outdoor antenna should be lo-
       cated away from power lines.
16) Nonuse Periods-The power cord of the applia-
      nce should be unplugged from the outlet when 
      left unused for a long period of time.

17) Object and liquid Entry-Care should be taken 
       so that objects do not fall and liquids are not  
       spilled into the enclosure through openings.

18) Damage Requiring Service-The appliance sho-
      uld be serviced by qualified service personnel 
      when;
      A.The power-supply cord or the plug has been 
         damaged;or
      B.Objects have fallen,or liquid has spilled into 
         the appliance;or
      C.The appliance has been exposed to rain;or
      D.The appliance does not appear to operate 
          normally or exhibits a marked change in 
          performance;or
      E.The appliance has been dropped,or the
         enclosure damaged.

19) Servicing-The user should not attempt to service 
      the appliance beyond that described in the op-
      erating instructions. AII other servicing should 
      be referred to qualified service personnel.

READ BEFORE OPERATING EQUIPMENT

SAFETY INSTRUCTIONS

Summary of Contents for AKJ7404

Page 1: ...AL ECHO KEY AND FEEDBACK CONTROLS Thank you for purchasing the Audio2000 S professional karaoke mixer with digital echo key and feedback controls To achieve maximum performance from your new unit please read this manual thoroughly and retain it for future reference For more information please visit our website www audio2000s com R 4 1 A C C 7 03 ...

Page 2: ...NIT SAFETY PRECAUTIONS MAINTENANCE TROUBLESHOOTING ETIQUETTE OF SOUND SPECIFICATIONS IMPORTANT For your protection please read these instructions completely and keep this manual for future reference Carefully observe and comply with all warnings cautions and instructions placed on the equipment or described in the operations instructions to guard against injury TABLE CONTENTS 1 2 3 3 3 4 5 6 7 8 9...

Page 3: ...rating and maintenance servicing instructions in the literature accompanying the appliance CAUTION TO PREVENT ELECTRIC SHOCK MATCH WIDE BLADE OF PLUG TO WIDE SLOT FULLY INSERT ATTENTION POUR EVlTER LES CHOCS ELECTRIQUES INTRODUlRE LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPON DANTE DE LA PRISE ET POUSSER JUSQU AU FOND CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR ...

Page 4: ...y from heat sources such as radiators heat registers stoves or other appliances including amplifiers that produce heat 11 Power Sources The appliance should be con nected to a power supply only of the type des cribed in the operating instructions or as mar ked on the appliance 12 Grounding or Polarization The precautions that should be taken so that the grounding or pola rization means of an appli...

Page 5: ...molding of the plug and pull Power consumption of AC power outlets Be careful that the total power consumption does not exceed the wattage marked on the rear panel Do not connect other appliances than the system components to the power outlets of this unit Do not connect a TV set to this unit even if the power consumption value marked on a TV set is below the permissible limit of this unit A large...

Page 6: ... front panel 2 A This control knob adjusts the microphone input level from the MIC INPUT 2 jack front panel and the MIC INPUT A jack rear panel 3 B This control knob adjusts the microphone input level from the MIC INPUT 3 jack front panel and the MIC INPUT B jack rear panel Normally set these control knobs to the center positions MICROPHONE INPUT JACKS 1 2 3 These jacks are for connecting micropho...

Page 7: ...can be adjusted between 12dB and 12dB KEY CONTROL BUTTONS b Lowers the music key one step each step is 1 4 note each time this button is pressed Resets the music key to its natural key Raises the music key one step each step is 1 4 note each time this button is pressed Note The key will stay until it is changed further ECHO TONE BASS MID TREBLE CONTROLS These controls are used to boost or cut the ...

Page 8: ...CD player to these jacks AUX Connect the audio output of any auxiliary component such as a cable broadcasting tuner to these jacks BGM Connect the output jacks of the BGM background music player to these jacks 230V 115V 230V 115V Voltage Selector AC IN 115V 230V 50Hz 60Hz PRE OUT OUT IN MIC EFFECT MIC EFFECT INPUT OUTPUT JACKS VOLTAGE SELECTOR VIDEO INPUT JACKS DVD VCD AUX BGM DESCRIPTIONS AND FUN...

Page 9: ...S The MIC EFFECT allows the AKJ7404 user to add any sound effecter such as an equalizer as a part of the microphone loop in the AKJ7404 unit If a sound effecter is not used check to make sure that the U shaped connector is connected from the IN jack to the OUT jack If a sound effecter is to be placed in between the IN jack and the OUT jack the U shaped connector needs to be removed from the unit a...

Page 10: ...V 115V 230V 115V Voltage Selector AC IN 115V 230V 50Hz 60Hz PRE OUT OUT IN MIC EFFECT 8 DVD VCD Video Deck Cassette Deck BGM Graphic Equalizer Power Ampilifer MIC MIC TV Monitor MIC EFFECTOR TV Monitor TV Monitor TV Monitor ...

Page 11: ...PRINCIPLE OF AUDIO VIDEO SWITCHOVER PRE OUT 9 1 2 ...

Page 12: ... the ECHO VOLUME control knob Press the KEY CONTROL buttons to set the desired key Connect a desired number of microphones to the microphone inputs on the AKJ7404 Notes for Proper Use of a Microphone Hold a microphone to have the top of its windscreen 1 to 2 inches away from your mouth To get the best pickup result point the microphone toward your mouth To ensure a clear vocal output do not block ...

Page 13: ...me The LED on the MUSIC VOLUME CONTROL knob on the front panel of the main unit blinks during the adjustment A fine adjustment is available by pressing the button intermittently MIC VOLUME These master microphone volume control buttons are used to raise or reduce the microphone volume The LED on the MASTER MIC VOLUME CONTROL knob on the front panel of the main unit blinks during the adjustment A f...

Page 14: ...n or flammable objects such as paper and matches through the ventilation holes or other openings on the unit for this will cause malfunction or hazard of fire and electric shock In case water or a foreign object enters inside the unit consult an authorized service center or your dealer for a check up Hold the power plug when plugging or unplugging the power cord Do not pull the cord or touch it wi...

Page 15: ... is in the minimum position Adjust the volume control The U shaped connector is not inserted into the MIC EFFECT jacks or not properly inserted Make sure the U shaped connector is properly inserted into the MIC EFFECT jacks A condenser microphone is used Change the condenser microphone to a dynamic microp hone or a condenser microphone accepting battery power Humming noise Grounding problems betwe...

Page 16: ...B 10KHz Microphone BASS 10 10dB 100Hz MID 5 5dB 2KHz TREBLE 10 10dB 10kHz Key Control Range 13 steps 3tones Video Input Jack Sensitivity Input impedance 1Vp p 75 Video Output Jack Output level Output impedance 1Vp p 75 Ω Ω Ω Ω Ω Ω Power Supply Supply Voltage AC 115V 230V 50Hz 60 Power Consumption 30W Dimensions W X H X D 17 0 X 5 2 X 17 1 Weight 14 3lbs Accessories Remote Control Unit 1 AAA Batter...

Page 17: ...ng carton Also enclose a note describing the problem along with any other helpful information such as where and how the unit was used LIMITED WARRANTY H F Technologies Incorporated H F hereby warrants that Audio2000 S products will be free from defects in material and workmanship for a period of 1 one year from date of purchase At its option H F will repair or replace the defective product and pro...

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