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American Audio Mixer QFX16 User Manual

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    User Guide 
    and Reference Manual
         Rev. 4/05
          Q-FX19
    4295 Charter Street
    Los Angeles Ca. 90058
    www.AmericanAudio.us 
    						
    							
    ©American Audio®   -   www.americanaudio.us   -   Q-FX19™ Instruction Manual Page 2
    MAIN FEATURES....................................................................................................................................2
    ELECTRICAL  PRECAUTIONS...............................................................................................................4
    SAFETY  PRECAUTIONS.......................................................................................................................5
    INTRODUCTION.............................................................. ......................................................................6
    SET-UP  PRECAUTIONS.........................................................................................................................6
    UNPACKING.........................................................................................................................................7
    QUICK  START...........................
    .............................................................................................................7
    FUNCTIONS AND CONTROLS
      FRONT  PANEL...................................
    .........................................................................................8
      REAR  PANEL........................
    ....................................................................................................12
      LCD  SCREEN/DSP  EFFECTS...................................................................................................15
                                                                                                                    
    CLEANING.............. .......................... ........................... ................................................... 20
    CROSSFADER  REPLACEMENT.........
    ..................................................................................................20
    TROUBLESHOOTING......................................................................................................................21
    WARRANTY............................................................... ..........................................................................22
    SPECIFICATIONS ................................................... ..................................................................23
       Q-FX19™                                                       CONTENTS
      Q-FX19™                                                                    MAIN  FEATURES
    •  Feather Fader Plus for Q-Start Control
    •   3 Phono, 4 Line,  3 Auxiliaries & 3 Mic Inputs 
    •   Balanced outputs • Rotary Kills
    •   High quality Feather Fader™ for smooth, clean  
      cross fades (replaceable)
    •   Bass, Mid, and Treble for each channel
    •   2 Independent Microphones with Separate EQ  
      with combo connection (1/4”/XLR) - 3rd Mic on  
      channel 4
    •   Zone Output with Bass and Treble Control
    •   Mono/Stereo Switch on Master
    •   High level headphone output 
    •   Cue mixing 
    •   Split cue for headphones
    •   Talk Over Switch - Reduces channel output
       Gain by 14dB +/- 2 dB
    •   Left & right turntable ground connectors                           
        conveniently located at each end of the rear                      
        panel
    •   Pre Fader Levels (PFL) for each channel 
    •   On/Off switch for channel assign 
    •   Gain control for each channel
    •   Rear inset “L” shape case design •   120v/220v selectable 
    •   Q-Start Compatible (for use with American  
       Audio CD Players with Fader “Q” Start)
    •   2 year limited warranty
    •   Master Level Indicator 
    •   Master Output Pan Control
    •   Balanced XLR Output 
    •   DSP Effects - Trans, Pan, Filter, Pitch Shift,  
         Flanger, Phase, Echo, and Delay
    •   Digital BPM Display
      
    						
    							
    ©American Audio®   -   www.americanaudio.us   -   Q-FX19™ Instruction Manual Page 3
    NOTE:  This  product  satisfies  FCC 
    regulations  when  shielded  cables 
    and  connectors  are  used  to  con
    -
    nect  the  unit  to  other  equipment. 
    To  prevent  electromagnetic  inter
    -
    ference  with  electrical  appliances 
    such as radios and televisions, use 
    shielded  cables  and  connectors 
    for connections.
    WARNING: TO PREVENT FIRE OR ELECTRIC 
    SHOCK  HAZARD,  DO  NOT  EXPOSE  THIS 
    UNIT TO RAIN, LIQUIDS, OR MOISTURE 
    CAUTION:  TO  PREVENT  ELECTRIC  SHOCK 
    DO  NOT  USE  THIS  (POLARIZED)  PLUG 
    WITH  AN  EXTENSION  CORD,  RECEPTACLE, 
    OR  OTHER  TYPE  OF  ELECTRICAL  OUTLET 
    UNLESS  THE  WIDE  BLADES  CAN  BE 
    CAREFULLY  INSERTED  INTO  A  MATCHING 
    WIDE SLOT.
    ATTENTION:  POUR  PREVENIR  LES  CHOCS 
    ELECTRIQUES  NE  PAS  UTILISER  CETTE 
    FICHE  POLARISEE  AVEC  UN  PROLON-
    GATEUR,  UNE  PRISE  DE  COURANT  OU 
    UNE  AUTRE  SORTIE  DE  COURANT,  SAUF 
    SI  LES  LAMES  PEUVENT  ETRE  INSEREES  A 
    FOND SANS EN LAISSER AUCUNE PARTIE A 
    DECOUVERT.
        Q-FX19™                                                ELECTRICAL SAFETY PRECAUTIONS
    VOLTAGE SELECTOR SWITCH
    LINE VOLTAGE SELECTION 
    •  The desired voltage may be set with the  
      VOLTAGE SELECTOR switch on the rear  
      panel (using a flat head screw driver).
    •  Do not force the VOLTAGE SELECTOR  
      switch as this may cause damage
    •  If the VOLTAGE SELECTOR switch does  
      not move smoothly, please contact a quali- 
      fied service technician.
    The  serial  and  model  number  for  this  unit  is 
    located  on  the  rear  panel.  Please  write  down 
    the  numbers  here  and  retain  for  future  refer
    -
    ence. 
    Model No._____________________________
    Serial No._____________________________
    Purchase Notes:
    Date of Purchase_______________________
    Dealer Name__________________________
    Dealer Address_________________________
    _____________________________________
    _____________________________________
    Dealer Phone__________________________ 
    						
    							
    ELECTRICAL PRECAUTIONS
    RISK OF ELECTRIC SHOCKDO NOT OPEN
    CAUTION
    The exclamation point within an equilateral triangle is
    intended to alert the  user  to the  presence  of important
    operating  and maintenance  (servicing) instructions  in
    the literature accompanying the appliance.
    The lightning flash with arrowhead symbol, within anequilateral triangle, is intended to alert the user to thepresence of uninsulated "dangerous voltage" within the
    product's  enclosure  that may  be of sufficient  magnitude
    to constitute a risk of electric shock to persons.
    READ INSTRUCTIONS — All the  safety  and operating
    instructions  should be read  before  the product is
    operated.
    RETAIN INSTRUCTIONS —  The safety and operatin
    g
    instructions  should be retained for future  reference.
    HEED  WARNINGS — All  warnings  on the  product  andin the  operating  instructions  should be adhered to.
    FOLLOW  INSTRUCTIONS — All  operating  and use
    instructions should be followed.
    CLEANING 
    — T he  product  should be cleaned  only witha polishing  cloth or a soft dry cloth.  Never  clean withfurniture  wax, benzine,  insecticides  or other volatile
    liquids since they may corrode the cabinet.A TTACHMENTS — Do  not  use attachments  not
    recommended  by the  product  manufacturer  as they
    may cause hazards.
    WATER  AND MOISTURE 
    — Do  not  use this  product
    near water — for  example,  near a bathtub,  wash
    bowl,  kitchen  sink, or laundry  tub; in a wet  basement;
    or near a swimming pool; and the like.
    ACCESSORIES 
    —  Do  not  place this  product  on an
    unstable  cart, stand,  tripod,  bracket,  or table.  The
    product  may fall, causing  serious injury to a child oradult,  and serious  damage to the  product.  Use onlywith a  cart,  stand,  tripod,  bracket,  or table
    recommended  by the  manufacturer,  or sold with
    the  product.  Any mounting  of the  product  shouldfollow the manufacturer’s  instructions, and should
    use a  mounting  accessory  recommended  by the
    manufacturer.
    CART — A  product  and cart combination  should be
    moved with  care.  Quick  stops,  excessive  force, and
    uneven  surfaces  may cause  the product  and cart
    combination to overturn.
    VENTILATION 
    —  Slots  and openings in the  cabinet  are
    provided  for ventilation  and to ensure  reliable
    operation  of the  product  and to protect it from
    overheating,  and these  openings  must not be
    blocked  or covered.  The openings  should never be
    blocked  by placing  the product  on 
    a bed,  sofa,  rug,
    or  other similar  surface.  This product  should not be
    placed in a built-in  installation  such as a bookcase  or
    rack  unless  proper ventilation is provided  or the
    manufacturer’s  instructions have been  adhered to.
    POWER  SOURCES — This  product  should be operated
    only  from  the type  of power  source  indicated  on the
    marking  label. If you  are not sure  of the  type  of
    power  supply to your  home,  consult  your product
    dealer or local power company.
    LOCATIO
    N –  The  appliance  should be installed in a
    stable location.
    NONUSE  PERIOD
    S – The  power  cord of the  appliance
    should  be unplugged  from the outlet  when left un-
    used for a long period of time. GROUNDING OR POLARIZATION
    •
    If this  product  is equipped  with a polarized  alternating
    current  line plug (a plug  having  one blade  wider than
    the  other), it will fit into  the outlet  only one way.  Thisis a safety  feature. If you  are unable to insert  the plugfully into  the outlet,  try reversing  the plug. If the  plug
    should still fail to fit,  contact  your electrician to
    replace  your obsolete outlet.  Do not  defeat the
    safety purpose of the polarized plug.
    • If this  product  is equipped  with a three-wire
    grounding  type plug, a plug  having a third  (grounding)
    pin, it will  only fit into a grounding  type power outlet.
    This is a  safety  feature. If you  are unable to insert the
    plug into  the outlet,  contact  your electrician to
    replace  your obsolete outlet.  Do not  defeat the
    safety purpose of the grounding type plug.
    POWER-CORD  PROTECTION 
    - Power-supply  cords
    should  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 cords  at
    plugs,  convenience  receptacles, and the point  where
    they exit from the product.
    OUTDOOR ANTENNA GROUNDING —  If an outside
    antenna  or cable  system  is connected  to the  product,
    be  sure  the antenna  or cable  system is grounded  so
    as  to provide  some protection  against voltage  surges
    and  built-up  static charges.  Article 810 of the  National
    Electrical  Code, ANSI/NFPA  70, provides  informatio
    nwith regard to proper  grounding  of the  mast  and
    supporting  structure, grounding  of the  lead-in  wire
    to an  antenna  discharge unit, size of grounding
    conductors,  location of antenna-discharge  unit,
    c o n n e c t i o n  t o g r o u n d i n g  e l e c t r o d e s ,  a n d
    requirements  for the  grounding  electrode. See  Figure
    A.
    LIGHTNING 
    —  For  added  protection for this product
    during a  lightning  storm, or when  it is  left  unattended
    and  unused for long  periods  of time, unplug it from
    the wall  outlet  and disconnect  the antenna  or cable
    system.  This will prevent  damage to the  product
    due to lightning and power-line surges.
    POWER  LINES 
    — An  outside  antenna  system should
    not  be located in the  vicinity  of overhead  power lines
    or other electric light or power circuits, or where it
    can 
    fall into  such  power  lines or circuits.  When
    installing  an outside  antenna  system, extreme  care
    should  be taken to keep  from touching  such power
    lines  or circuits  as contact  with them  might  be fatal.OVERLOADING — Do  not  overload  wall outlets,
    extension  cords, or integral  convenience  receptacles
    as this can result in a risk of fire or electric shock. OBJECT 
    AND LIQUID  ENTRY 
    - Never  push  objects  of
    any  kind into this product  through  openings  as they
    may  touch  dangerous  voltage points or short-out
    parts  that could  result 
    in a fire or electric  shock.
    Never spill liquid of any kind on the product.
    SERVICING —  Do  not attempt to service this  product
    yourself  as opening  or removing  covers may expose
    you 
    to  dangerous  voltage or other  hazards. Refer  all
    servicing to qualified service personnel.
    DAMAGE  REQUIRING  SERVICE  - Unplug this  product
    from the wall outlet and refer servicing to qualified
    service personnel under the following conditions:
    • W hen the power-supply cord or plug is damaged.
    •If liquid  has been  spilled,  or objects  have fallen into
    the product.• If the product has been exposed to rain or water.•If the  product  does not operate  normally  by following
    the  operating  instructions.  Adjust only those  controls
    that  are covered  by the  operating  instructions  as an
    improper  adjustment  of other  controls  may result 
    in
    damage and will often require extensive work by a
    qualified  technician to restore  the product to its
    normal operation.
    •If  the  product  has been  dropped  or damaged in anyway.
    • W hen the product  exhibits a distinct  change in
    performance — this indicates a need for service.
    REPLACEMENT  PARTS 
    -- When  replacement  parts
    are  required,  be sure  the service  technician  has used
    replacement  parts specified  by the  manufacturer  or
    have  the same  characteristics  as the  original  part.
    Unauthorized  substitutions may result  in fire,  electri
    c
    shock, or other hazards.
    SAFETY  CHECK 
    - Upon  completion  of any  service  or
    repairs to this  product,  ask the service  technician to
    perform  safety checks to determine  that the product
    is in proper operating condition.
    WALL  OR CEILING  MOUNTING 
    — The  product  should
    not be mounted to a wall or ceiling.
    HEAT 
    —  The  product  should be situated  away from heat
    sources  such as radiators,  heat registers,  stoves, or
    other  products  (including 
    amplifiers)  that produce
    heat.
    IMPORTANT SAFETY INSTRUCTIONS
    ANTENNA
    LEAD IN
    WIRE
    GROUND
    CLAMP
    ANTENNA
    DISCHARGE UNI
    T
    (NEC SECTION 810-20)
    GROUNDING CONDUCTOR
    S
    (NEC SECTION 810-21)
    GROUND CLAMPS
    POWER SERVICE GROUNDING
    ELECTRODE SYSTEM
    (NEC ART 250, PART H)
    ELECTRIC
    SERVICE
    EQUIPMENT
    Fig. 
    A NEC — NATIONAL ELECTRICAL CODE
    C A U T I O N : T O R E D U C E  T H E R I S K  O F E L E C T R I C 
    SHOCK, DO NOT REMOVE THE COVER (OR BACK). 
    T H E R E  A R E N O U S E R  S E R V I C E A B L E  P A R T S 
    INSIDE  REFER  SERVICE  TO YOUR  AUTHORIZED 
    AMERICAN AUDIO® SERVICE TECHNICIAN.
        Q-FX19™                                                ELECTRICAL SAFETY PRECAUTIONS
    ©American Audio®   -   www.americanaudio.us   -   Q-FX19™ Instruction Manual Page 4 
    						
    							
    ©American Audio®   -   www.americanaudio.us   -   Q-FX19™ Instruction Manual Page 5
    1.  For  adult  use  only  -  Keep  out  of  the  reach 
    of   children.
    2.  Water and Moisture - The player should not 
    be  used  near  water  -  for  example,  near  a  bath 
    tub,  kitchen  sink,  laundry  tub,  in  a  wet
     base-
    ment  or  near  a  swimming  pool,  etc.
     Do not 
    spill  water  or  other  liquids  in  to  or  on  to  your 
    mixer.
    3.  Ventilation  -  The  Mixer  should  be  situ
    ated 
    so  that  its  location  or  position  does  not  inter
    -
    fere  with  its  proper  ventilation.  For 
    example, 
    the  Mixer  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 ventila
    -
    tion openings.
     
    4.  Heat  -  The  Mixer  should  be  situated  away
     
    from heat sources such as radiators, heat reg
    -
    isters,  stoves,  or  other  appliances  (including 
    amplifiers) that produce heat.
    5.  Power Sources - The Mixer should be con
    -
    nected  to  a  power  supply  (
    wall  outlet)  only  of 
    the type described in the operating instructions 
    or as marked on the Mixer.
    6.  Servicing  -The  user  should  not  attempt  to 
    service the Mixer beyond that described in the 
    operating  instructions.  There  are  no  user  ser
    -
    viceable parts 
    inside. All other servicing should 
    be  referred  to  qualified  service  personnel.  The 
    Player  should  be  serviced  by  qualified  service 
    personnel when:
        A.   The power-supply cord or the plug has  
       been damaged.
        B.  Objects have fallen, or liquid has been   
       spilled into the Mixer.
         C.  The Mixer has been exposed to rain  
       or water.
         D.  The Mixer does not appear to operate  
       normally or exhibits a marked change  
      in performance.
    7.  Never  disassemble  or  modify  your  unit  in 
    any way, doing so will void your manufactures 
    warranty.
        Q-FX19™                                                SAFETY PRECAUTIONS
    8. Never plug this mixer in to a dimmer pack.
    9.  Do not let insecticides, benzene, or thinner 
    come in contact with the surface of the 
     
    unit.
    10. This unit is intended for indoor use only, use 
    of this product outdoors voids all warranties.
    11.  Always  mount  this  unit  in  safe  and  stable 
    matter.
    12. Disconnect from main power before making 
    any type of connection.
    13. Cleaning - The  mixer should be cleaned 
    only as recommended by the manufacturer. 
    U se a soft cloth to wipe down the outside of the 
    unit.
      For stubborn stains moisten a soft cloth 
    with  glass cleaner or other mild  detergent to 
    wipe
      away any stains. Use a soft cloth to wipe 
    any
      residual cleaner. Never use volatile clean-
    ers   such  as benzene
    , solvent,  or thinner to clean 
    your
      unit, these cleaners will damage the units 
    surface. 
    14. Handle the power supply cord carefully. Do 
    not  damage  or  deform;  it  may  cause  electric 
    shock  or  malfunction  when  used.  Hold  plug 
    attachment  when  removing  from  wall  outlet. 
    Do not pull on the cord.
    15. To  avoid  electric  shock,  do  not  open  the 
    top cover when the unit is plugged in. If prob
    -
    lems occur with the unit, call American Au
    d io® 
    customer support.
    16. Do not place metal objects or spill any liq
    -
    uids    inside  or  on  the  mixer.  Electric  shock  or 
    malfunction may occur.
    17. Power  Cord  Protection  -  Power  supply 
    cords  should  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 cords at plugs, convenience recep
    -
    tacles,  and  the  point  where  they  exit  from  the 
    mixer.  Route your power cord out of the way of 
    foot traffic.
    18. Always  have  the  front  gain  controls  set  to 
    their lowest level during initial power-up to pre
    -
    vent speaker damage. 
    						
    							
    Introductions: Congratulations and thank you for purchasing the American Audio® Q-FX19™ mixer. 
    This  mixer  is  a  representation  of  American  Audio’s  continuing  commitment  to  produce  the  best  and 
    highest  quality  audio  products  possible  at  an  affordable  price.  Please  read  and  understand  this 
    manual completely before attempting to operate your new mixer. Please carefully read and understand 
    the  instructions  in  this  manual  thoroughly  before  attempting  to  operate  this  unit.  These  instructions 
    contain important safety information regarding the use and maintenance of this unit. Take special care 
    to follow all warning symbols and labels both on the unit and printed in this manual. Also, Please keep 
    this manual with the unit, for future reference.
    Customer Support: 
    American  Audio
    ®  provides  a  toll  free  customer  support  line,  to  provide  set  up  help  and  answer  any 
    question should you encounter problems during your initial set up or operation. You may also visit us 
    on the web at www.americanaudio.us for any comments or suggestions. Service Hours are Monday 
    through Friday 9:00 a.m. to 5:30 p.m. Pacific Standard Time.
      Voice:    (800) 322-6337
      Fax:     (323) 582-2610
      E-mail:   [email protected]
    To purchase parts online visit http://parts.americandj.com
    Caution!  There  are  no  user  serviceable  parts  inside  this  mixer.  Do  not  attempt  any  repairs  yourself, 
    without being instructed to do so by an authorized American Audio service technician. Doing so will 
    void your manufactures warranty. In the unlikely event your mixer may require service, please contact 
    American Audio® customer support.
    Do not discard the packing carton in the trash. Please recycle when ever possible.
      Q-FX19™                                                                                  INTRODUCTION
    ©American Audio®   -   www.americanaudio.us   -   Q-FX19™ Instruction Manual Page 6
      Q-FX19™                                                                            SET-UP  PRECAUTIONS
    Please be sure to make any connections before plugging the mixer in to an electrical outlet. All fader 
    and volume controls should be set to zero or minimum position, before the mixer is switched on. If the 
    mixer has been exposed to drastic temperature fluctuation (e.g. after transportation), do not switch on 
    the mixer immediately. The arising condensation of water might damage your device. Leave the device 
    switched off until it has reached room temperature.
    Operating Determinations:
    •  When installing this mixer, please make sure that the device is not exposed or will not be 
      exposed to extreme heat, moisture or dust!
    •  Do not operate the mixer in extremely hot (more than 30°/100°F) or extremely cold (less than 
      5°C/40°F) surroundings. 
    •  Keep the unit out of direct sunlight and away from heaters.
    •  Operate the mixer only after becoming familiar with its functions. Do not permit operation by 
      persons not qualified for operating the mixer. Most damages are the result of unprofessional 
      operation!
    •  Do not attempt to operate this mixer if the power cord has been frayed or damaged. 
    •  Disconnect
      from main power before making any type of connection.
    •  Do
     not attempt to operate this  mixer, if it becomes damaged in any  way.
    •  Never operate this mixer when it’s covers are removed.
    •  To reduce the risk of electrical shock or fire, do not expose this mixer to rain or moisture.
    •  This mixer is intended for indoor use only, use of this product outdoors voids all warranties.
    •  During long periods of non-use, disconnect the mixer’s main power. 
    						
    							
    QUICK START: American Audio® would like to thank you for your purchase of this great audio prod-
    uct.  For  those  of  you  that  are  too  impatient  to  read  the  entire  user  manual  we  have  compiled  these 
    quick  start  instructions.  We  hope  that  you  will  at  least  read  through  these  instructions  to  familiarize 
    yourself with the basics of this mixer. The Q-FX19™ is part of American Audio’s continuing evolution 
    in audio technology. This unit has been built and designed to meet the needs of a typical DJ. We have 
    attempted to provide you with the most reliable product on the market by using only components con
    -
    structed of the finest material.
    MASTER LEVEL -  Use this level to control your main volume output. Try never to send an output of 
    more  than  +4dB  to  your  system.  Signal  at  levels  higher  than  this  will  start  to  distort  and  may  cause 
    damage to your system and speakers. Remember that a distorted signal from you mixer will only be 
    multiplied throughout your system.
    CHANNEL GAIN LEVEL 
    -  The channel gain levels are not to be used as volume controls. Never use 
    the  channel  trim  to  set  the  output  volume.  These  controls  are  used  to  aid  in  distortion  control.  Use 
    these control to preset your signal level before the crossfader. With your channel faders in the maxi
    -
    mum position, use the channel trim level to set an average output level of about +4dB on you master 
    level meter.
    HEADPHONES  -  To  avoid  damaging  your  headphones  always  be  sure  the  headphone  volume  level 
    (15) is set to minimum before plugging them in. To avoid sever hearing damage, never put the head
    -
    phone on without making sure the headphone level is turned down.
    MAIN  MIC  -    The  main  mic  connector  uses  a  combo  plug  that  allows  you  to  connect  either  a  1/4” 
    unbalanced jack or by a standard 3-pin XLR balanced connector. The main mic also has an indepen
    -
    dent volume control. When feedback occurs when using the mic, try lowering the level this may reduce 
    the feedback. Always leave the mic level to it’s minimum level when not in use.  Note: We recommend 
    that you use a 500-600ohm microphone for the best sound quality.
    PHONO/AUX LINE LEVEL SELECTOR SWITCH -
      This switch is used to change the selected input 
    from phono to line and vice versa. The switch selectors are on the rear panel.
      Q-FX19™                                                            QUICK  START  INSTRUCTIONS
    ©American Audio®   -   www.americanaudio.us   -   Q-FX19™ Instruction Manual Page 7
      Q-FX19™                                                                                                UNPACKING
    Every  Q-FX19™  has  been  thoroughly  tested  and  has  been  shipped  in  perfect  operating  condition. 
    Carefully check the shipping carton for damage that may have occurred during shipping. If the carton 
    appears to be damaged, carefully inspect your mixer for any damage and be sure all equipment neces
    -
    sary to operate the mixer has arrived intact. In the event damage has been found or parts are missing, 
    please contact our toll free customer support number for further instructions. Please do not return the 
    mixer to your dealer without first contacting customer support. 
    						
    							
      Q-FX19™                                                                    CONTROLS  AND  FUNCTIONS
    ©American Audio®   -   www.americanaudio.us   -   Q-FX19™ Instruction Manual Page 8
    1.   MICROPHONE 1 -  This  combo  jack will accept a standard 1/4 plug or XLR 3-pin balanced male 
    plug. The volume output level for  this microphone will be controlled by  its own respective
     CHANNEL 
    KNOB 
    (27).  Note:  We  recommend  that  you  use  a  500-600ohm  microphone  for  the  best  sound 
    quality.
    2 .  CHANNEL GAIN CONTROL - This adjustment is used to adjust the audio source signal input gain 
    for  a  channel.  Never  use  the  gain  control  to  adjust  a  channels  output  volume.  Setting  the  gain  level 
    properly  will  ensure  a  clean  output  signal.  An  improper  gain  level  adjustment  will  send  a  distorted 
    signal throughout the entire audio line which may damage speakers and amplifiers. To properly set a 
    channels gain level control:
        1. Be sure the  MASTER VOLUME CONTROL (
    18) is set to level 8.
        2. Set the  CHANNEL FADER (
    23) to level 8.
        3. Begin playback on an audio source connected to the channel you are adjusting.
        4. Use the Gain Control to adjust an average output volume of +4 dB
    .    
         5. Repeat this step for all channels
    3.
      CHANNEL  TREBLE  CONTROL -  This  knob  is  used  to  adjust  the  treble  levels  of  a  channel 
    allowing  for  a  maximum  treble  gain  of  1
    2 dB  or  maximum  decrease  of  -30dB.  Turning  the  knob in 
    a  counter-clockwise  direction  will  decrease  the  amount  of  treble  applied  to  a  channel  signal,
     turn-
    ing  the  knob  in  a  clockwise  direction
      will  increase  the  amount  of  treble applied to  a  channel  signal.
    4.
      CHANNEL MIDRANGE CONTROL - This knob is used to adjust the midrange levels of a channel 
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    allowing for a maximum midrange gain of 12dB or maximum decrease of -30dB. Turning the knob in a 
    counter-clockwise direction will decrease the amount of midrange
      applied to a channel signal, turning 
    the  knob  in  a  clockwise  direction  will  increase  the  amount  of  midrange  applied  to  a  channel  signal.
    5.
      CHANNEL  BASS  CONTROL -  This  knob  is  used  to  adjust  the  low  frequency  levels  of  a  channel 
    allowing for a maximum bass gain of 1
    2 dB or maximum signal decrease of -30dB. Turning the knob 
    in a counter-clockwise direction will decrease the amount of bass applied to a channel
      signal, turning 
    the knob in a clockwise direction will increase the amount of bass applied to a channel signal.
    6 .  MASTER OUTPUT BALANCE CONTROL -  This knob is used to control the pan, adjust how much 
    of the signal is sent to the left and right output level. For true stereo imaging, maintain the knob in the 
    12 o’ clock position. 
    7.  ZONE LEVEL VOLUME OUTPUT CONTROL - This rotary knob is used to control the zone level 
    volume. The zone level is not PFL, it is essentially a second master output volume with separate out
    -
    put volume control.
    8.  ZONE TREBLE CONTROL -  This  knob  is  used  to  adjust  the  low  frequency  levels  of  the 
    ZONE  allowing  for  a  maximum  bass  gain  of  1
    2 dB  or  maximum  signal  decrease  of  -12 dB.  Turn-
    ing the knob  in  a  counter-clockwise  direction  will  decrease  the  amount  of  bass  applied  to  the 
    ZONE  signal,  turning  the knob  in  a clockwise  direction  will  increase  the  amount  of  bass 
    applied to the ZONE signal.
    9.  ZONE  BASS CONTROL -  This  knob  is  used  to  adjust  the  treble  levels  of  the ZONE allowing 
    for  a  maximum  treble  gain  of  1
    2 dB  or  maximum  decrease  of  -12 dB.  Turning  the  knob  in  a
    counter-clockwise  direction  will  decrease  the  amount  of  treble  applied  to  the  ZONE  signal,
     
    turning  the  knob  in  a  clockwise  direction  will  increase  the  amount  of  treble  applied  to 
    the ZONE signal.
    10
    .  MASTER OUTPUT MONO/STEREO SWITCH - This switches the Master Output signal between 
    stereo and mono.
    11.  LCD SCREEN - FOR INFORMATION SEE PAGES 15-17.
    12.  DSP EFFECTS (DIGITAL SIGNAL PROCESSING) - FOR INFORMATION SEE PAGES 15-17. 
    13.    SPLIT  CUE  -  This  button  will  activate  the  "Split  Cue"  function.  When  used  with  a  set  of  stereo 
    headphones, the Split Cue function will assign the Cue signal to the left channel of the headphones 
    and the Program (main output) signal to the right channel of the headphones. Essentially splitting the 
    cue signal in half. This process will allow for headphones mixing. The  CUE MIXING CONTROL (
    17) will 
    also work in conjunction with function. Please note that this function will only work with a set of stereo 
    headphones. 
    14 .  HEADPHONE JACK -
     This jack is used to connect your headphones to the mixer allowing you to 
    monitor the cue source. Use headphones only rated at 8 ohms to 32 ohms. Most DJ headphones are 
    rated at 16 ohm, these are highly recommended. Always be sure the  CUE LEVEL VOLUME (15
    ) is set 
    to minimum before you put the headphones on.
    15 .  CUE LEVEL VOLUME CONTROL -
     This knob is used to adjusts the headphone volume output 
    level. Turn the knob in a clockwise direction to increase the headphone volume.
    16.    CROSSFADER  FX  ACTIVATOR 
    -  When  this  button  is  activated  it  transfers  control  of  the  the 
    DEPTH FEEDBACK DIAL (65) to the  CROSSFADER 
    (21). While this function is engauged the DEPTH 
    FEEDBACK KNOB (65) will not function.  When this function is engaged, you are not able to store 
    pre-set parameters.
      Q-FX19™                                                CONTROLS  AND  FUNCTIONS  cont.
    ©American Audio®   -   www.americanaudio.us   -   Q-FX19™ Instruction Manual Page 9 
    						
    							
    ©American Audio®   -   www.americanaudio.us   -   Q-FX19™ Instruction Manual Page 10
    17.   CUE  MIXING  CONTROL  -  This  functions  allows  you  to  monitor  the  Cue  level  as  well  as  the 
    Program (main output) level in your headphones. A channels Cue Level may only be monitored if the 
    channels  PFL  (19) function  is  selected.  To  select  a  channels  cue  function  press  the PFL  BUTTON 
    (19)  that is directly associated with the specific channel you wish to monitor. You may use the mixing 
    function to blend both the Cue level and the Program level together. You can vary the output level to 
    either hear more or less of either of the two levels. Sliding the Cue Mixing fader to the CUE position 
    (left)  will  allow  you  to  hear  more  of  the  Cue  level.  Sliding  the  knob  to  the  PGM    position  (right)  will 
    allow you to hear more of the Program level (main output). You may also use the Cue Mixing Control 
    to hear either the Cue level or the Program level exclusively. If the fader is in the full CUE position you 
    will only hear the cue level, if the fader is in the full PGM position you will only hear the main output. 
    This function is especially useful when mixing without an monitor.  
    18 .    MASTER  VOLUME  CONTROL  -
     This  slider  is  used  to  control  the  master  output  level  (main 
    volume).  To  avoid  distorted  output  try  to  maintain  an  average  output  signal  level  no  greater  than  +4 
    dB. (see Channel Gain 
    2 ) To avoid speaker damage that may be caused by excessive volume, be sure 
    this slider is always set to zero (completely down) before turning the unit on.
    19 . PFL (CUE SELECTOR) BUTTON -  These buttons are used to activate a channels “CUE” mode. 
    A red LED next to the Cue button will glow when a channels cue mode is activated. The Cue function 
    sends  a  channels  incoming  signal  to  the  headphones.  The  cue  level  is  adjusted  by  the  CUE  LEVEL 
    KNOB (
    15).  Be sure the  CUE MIXING SLIDER (17) is set to the “CUE” position to hear a selected chan-
    nel source.
    20.  FADER “X” ASSIGN BUTTON - This button  assigns a channel to the left side (X) of the  CROSS-
    FADER  (
    21).  When  a  channel  is  assigned  to  the  left  side  of  the  CROSSFADER  (21) that  channels 
    output level is routed to and controlled by the
      CROSSFADER (21). Sliding the CROSSFADER (21) to 
    left position will send the assigned channels volume output to the MASTER VOLUME LEVEL (
    18) and 
    sliding  the  CROSSFADER  (
    21) to  right  position  will  cut  that  channels  volume  to MASTER  VOLUME 
    LEVEL (18). 
    21.  FEATHER FADER PLUS CROSSFADER -  This fader is used to blend the output signals of chan-
    nels one and two together. When the fader is in the full left position (channel 1), the output signal of 
    channel one will be controlled by the master volume level. The same fundamentals will apply for chan
    -
    nel  two.  Sliding  the  fader  from  one  position  to  another  will  vary  the  output  signals  of  channels  one 
    and two respectively. When the crossfader is set in the center position, the output signals of both the 
    channels one and channels two will be even.
    22.  FADER “Y” ASSIGN BUTTON - This button  assigns a channel to the right side (Y) of the  CROSS-
    FADER  (
    21).  When  a  channel  is  assigned  to  the right  side  of  the CROSSFADER  (21) that  channels 
    output level is routed to and controlled by the
      CROSSFADER (21). Sliding the CROSSFADER (21) to 
    right  position  will  send  the  assigned  channels  volume  output  to  the  MASTER  VOLUME  LEVEL  (18) 
    and sliding the  CROSSFADER (
    21) to left position will cut that channels volume to MASTER VOLUME 
    LEVEL (18). 
    23 . CHANNEL VOLUME FADER -
     These faders are used to control the output signal of any source 
    assigned  to  its  particular  channel.  However,  master  volume  is  controlled  by  the
      MASTER  VOLUME 
    CONTROL (18).
    24 . Q-START ON/OFF SWITCH -
     This function works in conjunction with a compatible American DJ® 
    or  American  Audio
    ®  “Q”  Start  CD  player.  When  used  with  a  compatible  CD  player,  you  can  use  the 
    crossfader to start and stop a CD Player with the slide of the mixer’s  CROSSFADER (
    21). The ON/OFF 
      Q-FX19™                                                CONTROLS  AND  FUNCTIONS  cont. 
    						
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