American Audio Mixer QD1 MKII User Manual

							
PHONO  inputs  (All  DJ  turntable  use  MM  pick-up  cartridges).  The  red  colored  RCA  jack  represents 
the right channel input and the white represents the left channel input. The output level for any device 
connected to these input jacks will be controlled by FADER CHANNEL 2.
20. GND (GROUND TERMINAL) - These connections are used to ground the excess magnetic flux of 
phono turntables. Connect each of your turntables ground leads to either of the two ground terminals. 
This will reduce the humming and popping noises associated with magnetic phono cartridges.
21. CHANNEL 1: LINE 1 RCA INPUT JACKS -
  These Jacks are used for line level inputs. Connect CD 
players such as the American Audio
® CDS-1™ or tape decks to LINE inputs. Line level musical instru-
ments with stereo outputs such as Rhythm Machines or Samplers should also be connected to LINE 
inputs. Turntables should only be connected to “Phono” inputs. The red colored RCA jack represents 
the right channel input and the white represents the left channel input. The output level for any device 
connected to these input jacks will be controlled by FADER CHANNEL 1.
22.  CHANNEL  1:  PHONO  1  INPUT  -
  Connect  turntables  equipped  with  MM  pickup  cartridge  to 
PHONO  inputs  (All  DJ  turntable  use  MM  pick-up  cartridges).  The  red  colored  RCA  jack  represents 
the right channel input and the white represents the left channel input. The output level for any device 
connected to these input jacks will be controlled by FADER CHANNEL 1.
23 .  PLAYER B CONTROL -  This jack is used to control the “Q-Start” function between the mixer 
and  a  compatible  American  Audio
®  or  American  DJ®  CD  Player.  Using  the  mini  plug  included  with 
your  CD  player,  connect  from  the  CD  player  controller  out  jack  to  this  jack.  Player  B  “Q-Start” 
functionallity  will  be  controlled  by  the  left  side  of  the  CROSSFADER  (8).  For  more  information  on 
“Q-Start” functionallity refer to the user manual included with your CD player.  Be sure to only use 
the  mono  tip  mini  plug  included  with  your  CD  player  to  avoid  damage  to  the  mixer  and/or  the  CD 
player.
24 .  PLAYER A CONTROL -  This jack is used to control the “Q-Start” function between the mixer 
and  a  compatible  American  Audio
®  or  American  DJ®  CD  Player.  Using  the  mini  plug  included  with 
your  CD  player,  connect  from  the  CD  player  controller  out  jack  to  this  jack.  Player  A  “Q-Start” 
functionallity  will  be  controlled  by  the  left  side  of  the  CROSSFADER  (8).  For  more  information  on 
“Q-Start” functionallity refer to the user manual included with your CD player.  Be sure to only use 
the  mono  tip  mini  plug  included  with  your  CD  player  to  avoid  damage  to  the  mixer  and/or  the  CD 
player.
  Q-D1  MKII™                                          CONTROLS  AND  FEATURES  CONT.
©American Audio®   -   www.AmericanAudio.us   -   Q-D1 MKII™ Instruction Manual Page 11 
						

							
  Q-D1  MKII™                                                            TYPICAL  MIXER  SET-UP
TURNTABLETURNTABLE
©American Audio®   -   www.AmericanAudio.us   -   Q-D1 MKII™ Instruction Manual Page 12 
						

							
  Q-D1  MKII™                                                        TYPICAL  MIXER  SET-UP
Speaker Cables
Stereo RCA to RCA Patch Cable
©American Audio®   -   www.AmericanAudio.us   -   Q-D1 MKII™ Instruction Manual Page 13
GX300 Amplifier 
						

							
Due to fog residue, smoke, and dust, cleaning the mixer should be carried out periodically to optimize 
light output. 
 
1.   Use normal glass cleaner and a soft cloth to wipe down the outside casing.
2.   Use a cleaner specially designed for electronics to spray in and around the knobs and switch.    
  This will reduce small particle built up that can effect the proper operation of the mixer. 
3.   Cleaning should be carried out every 30-60 days.
4.  Always be sure to dry all parts completely before plugging the   mixer in.
Cleaning frequency depends on the environment in which the mixer operates (i.e. smoke, fog residue, 
dust, dew).
The crossfader is “Hot Changeable” which means it may be replaced at any time, even when power 
is applied. Only replace with American Audio Feather Fader Plus. Replacing with any other model 
fader may seriously damage your mixer.
Replacing the Crossfader:
1.   Using a number two Phillips screw driver, unscrew the each of the stainless steel retaining  
  screws that hold the crossfader in place.
2.   Gently remove the crossfader from its seated position. You may need to wiggle the crossfader  
  slightly to unseat it.
3.   After removing the crossfader, disconnect the ribbon cable that attaches the crossfader to the  
  PC board. Grasp the crossfader by its base and pull the ribbon cable by its connector not the  
  actual cables. The connector is desired to only fit one way, so don’t worry about the connectors  
  orientation.
4.   Connect the new crossfader to the ribbon cable.
5.  Reassemble in reverse order.
  Q-D1  MKII™                                                                CLEANING
  Q-D1  MKII™                                    CROSS  FADER  REPLACEMENT
©American Audio®   -   www.AmericanAudio.us   -   Q-D1 MKII™ Instruction Manual Page 14 
						

							
1-YEAR LIMITED WARRANTY
A.  American Audio
® hereby warrants, to the original purchaser, American Audio® products to be free 
of manufacturing defects in material and workmanship for a period of 1 Year (365 days) from the date 
of purchase. This warranty shall be valid only if the product is purchased within the United States of 
America, including possessions and territories. It is the owner’s responsibility to establish the date and 
place of purchase by acceptable evidence, at the time service is sought. 
B.  For warranty service, send the product only to the American Audio
® factory. All shipping charges 
must be pre-paid. If the requested repairs or service (including parts replacement) are within the terms 
of  this  warranty,  American  Audio
®  will  pay  return  shipping  charges  only  to  a  designated  point  within 
the United States. If the entire instrument is sent, it must be shipped in its original package. No acces
-
sories should be shipped with the product. If any accessories are shipped with the product, American 
Audio®  shall  have  no  liability  whatsoever  for  loss  of  or  damage  to  any  such  accessories,  nor  for  the 
safe return thereof.  
C.  This warranty is void if the serial number has been altered or removed; if the product is modified in 
any manner which American Audio
® concludes, after inspection, affects the reliability of the product; 
if the product has been repaired or serviced by anyone other than the American Audio
® factory unless 
prior  written  authorization  was  issued  to  purchaser  by  American  Audio
®;  if  the  product  is  damaged 
because not properly maintained as set forth in the instruction manual. 
D.  This is not a service contract, and this warranty does not include maintenance, cleaning or peri
-
odic  check-up.  During  the  period  specified  above,  American  Audio
®  will  replace  defective  parts  at 
its  expense,  and  will  absorb  all  expenses  for  warranty  service  and  repair  labor  by  reason  of  defects 
in  material  or  workmanship.  The  sole  responsibility  of  American  Audio
®  under  this  warranty  shall  be 
limited  to  the  repair  of  the  product,  or  replacement  thereof,  including  parts,  at  the  sole  discretion  of 
American Audio
®. All products covered by this warranty were manufactured after January 1, 1990, and 
bear identifying marks to that effect. 
E.  American Audio
® reserves the right to make changes in design and/or improvements upon its prod-
ucts without any obligation to include these changes in any products theretofore manufactured. 
F.  No warranty, whether expressed or implied, is given or made with respect to any accessory sup
-
plied  with  products  described  above.  Except  to  the  extent  prohibited  by  applicable  law,  all  implied 
warranties  made  by  American  Audio
®  in  connection  with  this  product,  including  warranties  of  mer-
chantability or fitness, are limited in duration to the warranty period set forth above. And no warran
-
ties,  whether  expressed  or  implied,  including  warranties  of  merchantability  or  fitness,  shall  apply  to 
this product after said period has expired. The consumer’s and or Dealer’s sole remedy shall be such 
repair  or  replacement  as  is  expressly  provided  above;  and  under  no  circumstances  shall  American 
Audio® be liable for any loss or damage, direct or consequential, arising out of the use of, or inability 
to use, this product. 
 
G.  This warranty is the only written warranty applicable to American Audio
® Products and supersedes 
all prior warranties and written descriptions of warranty terms and conditions her etofore published. 
  Q-D1  MKII™                                                                            WARRANTY
©American Audio®   -   www.AmericanAudio.us   -   Q-D1 MKII™ Instruction Manual Page 15 
						

							
Technical Specifications - Model:  Q-D1 MKII, 2 Channel Audio Mixer.
POWER SUPPLY:          AC 9v/1000mA.
DIMENSIONS:           192(W) * 236(D) * 82(H) mm
WEIGHT:             5.5 Lbs./2.3 Kgs
CROSSFADER:           Low Residue Resistanced Crossfader.
POWER CONSUMPTION:       10 Watts Typical
HEADPHONE IMPEDANCE:      
16 Ohms
ENVIRONMENTAL CONDITION:     Operating Temperature 5 to 35 deg. C
              Humidity 25 to 85% RH (non-condensing)
Input/Output Impedance & Sensitivity (Level/Impedence): (Master set to 0dBV output, 
Load=100K OHM, maximum gain)
LINE:             
10K OHM /-14dBV (200mV)  +/-2dB
PHONO:            47K OHM /-50dBV (3.16mV)  +/-2dB
MIC:              2.2K OHM /-60dBV (1mV)  +/-2dB
MASTER:           
1K OHM
REC:              1K OHM /-10dBV (316mV)  +/-2dB
Maximum Input (1KHz, Master Output THD=0.5%, EQ falt, Maximum Gain)
LINE:              More than +4dBV
PHONO:            More than -32dBV
MIC:              More than -42dBV
Maximum Output (THD=1%, Maximum Gain, EQ at center position)
MASTER (RCA):           MORE THAN 18dBV (8V) at Load=100K OHM
PHONES:             MORE THAN 4dBV (1.6V) at Load=32OHM
CHANNEL BALANCE:         Within 3dB
Output Noise (Maximum Gain, EQ flat, W/20KHz LPF, A-Weighted)
LINE:              LESS THAN  -90dBV
PHONO:            LESS THAN  -70dBV
MIC:              LESS THAN  -60dBV
Frequency Response (Master=0dBV output, Maximum Gain, EQ Flat)
LINE:             
20-20KHz +/-1dB
PHONO:           
20-20KHz +1/-1.5dB (RIAA)
MIC:             
20-20KHz +1/-2dB
NOTE: 0dBV=1 Vrms
CROSS TALK: 
          > 70dB @1Khz between left and right channels
              > 70dB @1KHz between channels
Channel Equalizer:
LOW:              12+/-2dB at 100Hz
              -26+/-3dB at 100Hz
TREBLE:            12+/-2dB at 10KHz
              -19+/-3dB at 10KHz
Fader Maximum Attenuation
Channel Fader:          More than 80dB at 1KHz
Crossfader            More than 80dB at 1KHz
  Q-D1  MKII™                                                                            SPECIFICATIONS
©American Audio®   -   www.AmericanAudio.us   -   Q-D1 MKII™ Instruction Manual Page 16 
						

							
©American Audio®
A Division of American DJ® 
American Audio World Headquarters: 4295 Charter Street 
Los Angeles, CA 90058 USA
Tel: 323-582-2650 Fax: 323-582-2610
Web: www.AmericanAudio.us E-mail: [email protected]