American Audio Mixer MX1400 DSP User Manual

							
©American Audio®   -   www.americanaudio.us   -   MX-1400 DSP Instruction Manual Page 21
Due to fog residue, smoke, and dust, cleaning the mixer should be carried out periodically to residue 
build up.  
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 to prevent heavy built up.
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 Swapable” which means it may be replaced at any time, even when power is 
applied. Only replace with American Audio Part Feather Fader Plus. Replacing with any o\
ther model 
fader may seriously damage your mixer.
Replacing the Crossfader:
1.   Disconnect the mixers main power supply
2.  Using a number two Phillips screw driver, unscrew the each of the stainless steel retain screws  
 that hold the crossfader in place.
3.   gently remove the crossfader from its seated position. You may need to wiggle the crossfader  
 slightly to remove it.
4.  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 designed to only fit one way, so don’t worry about the connec 
 tors orientation.
5.  Connect the new crossfader to the ribbon cable and replace in reverse order.
  MX-1400  DSP                                                           C LEaNiNG
  MX-1400  DSP                       CROSS   FaDER   REPL aCEMENT 
						

							
©American Audio®   -   www.americanaudio.us   -   MX-1400 DSP Instruction Manual Page 22
  MX-1400  DSP                           TROUbLES hOOT iNG
t rouble shooting: Listed below are common problems you may encounter, and solutions.
there is no power to the unit:
be sure you have connected the power cord to a correct wall outlet.
there is little or no sound:
1.   Check the input selector switch. Make sure it is set to the device that is currently playing.
2.   Check to see if the connection cables are connected properly. 
3.   Check the Trim Output level control on the rear panel, make sure it is not set to low.
the sound is distorted:
1.   Check the Trim Output level control on the rear panel, make sure it is not set to high.
2.   Make sure that the gain level control is not set to high.
crossfader is not working:
Check and see if any channels have been assigned to the crossfader.
effects are not working:
1.   Check to see if the effects have been activated. Activate them by pressing the “FX ON” button. 
2.   Make sure a channel has been selected in which to apply effects to.
cannot measure bpM, or measured bpMs seem incorrect:
Sometimes the bPM cannot be measured, depending on the music. If this happens, you will         
have to set the bPM manually, by using the TAP button (16). See TAP button (16) on page 10.
   
						

							
©American Audio®   -   www.americanaudio.us   -   MX-1400 DSP Instruction Manual Page 23
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 cond\
itions heretofore published. 
The MX-1400 DSP carries a one year limited warranty. We recommend you fill out the enclosed warranty 
card to validate your purchase. All returned service items whether under warranty or not, must be freight 
pre-paid  and  accompany  a  R.A.  (return  authorization)  number.  If  the  mixer  is  under  warranty,  you  must 
provide a proof of purchase invoice. You may obtain a R.A. number by contacting our customer support 
team on our toll free number. Please contact American Audio® customer support at (800) 322-6337 
for  a  R.A.  number.  All  package  not  displaying  a  R.A.  number  on  the  outside  of  the  package  will 
be  returned  to  the  shipper.
  MX-1400  DSP                                                                                        waRR aNTY 
						

							
©American Audio®   -   www.americanaudio.us   -   MX-1400 DSP Instruction Manual Page 24
Model: MX-1400 DSP 4 Channel Mixer
poWer suppLY:    AC 115v~60hz/230v~50hz, User Selectable
       Single Voltage:
       AC 100V, 50/60hz (Japan);      AC 110V, 60hz (Colombia)
      AC 120V, 60hz (U.S.A. and Canada);  AC 127V, 60hz (Mexico)
      AC 220V, 50hz (Chile and Argentina);  AC 240V, 50hz (Australia)
      AC 220V, 60hz (Philippines and  korea)
      AC 230V, 50hz (Europe, U.k., New Zealand, South Africa, and Singapore)
diMensions:                        320mm (W) x 357mm (D) x 106mm (h)
                       12.6” (W) x 14” (D) x 4.17” (h)
WeiGht:                                13.8 Lbs. / 6.3 kgs.
crossFader:                               Feather Fader Plus - VCA detecting fader start c\
ontrol - 
                                  Low grounding impedance crossfader
poWer consuMption:                                       33W 
headphone iMpedance:                                       16 Ohms
operatinG teMperature:                                       5 to 35 deg. C; humidity: 25 to 85% Rh     
                                                         (non-condensing); S\
torage Temperature: -20 to 60 deg. C
input/Output impedance & Sensitivity: (Eq Flat, Maximum gain, FX Off, Load = 100k OhM)
Line:                       20k OhM / -14dbV +/-0.1db (200mV) 
auX:              47k OhM / -14dbV +/-0.1db (200mV)
phono:                      47k OhM / -54dbV +/-0.1db (2mV) 
Mic:                                   10k OhM / -54dbV +/-0.1db (2mV) 
rec:                                                             1k OhM / -10dbV (316mV) +/-2db
Master unbaL.:         1k OhM / 0dbV (1V) +/-2db
Master XLr (load=600 ohM):     600 OhM / +4dbm (1.23V) +/-2db 
booth (load=600  ohM):       600 OhM / +4dbm (1.23V) +/-2db
diGitaL out (load=75 ohM):        75 OhM /  -16dbfs +/-2db, 0.5 +/-0.1V P-P
phones (load=32 ohM):        33 OhM / 0dbV (1V) +/-2db (Cue Mixing at center)
Maximum input: (1khz Input, Master Output ThD=1%, Eq Flat, FX Off, Maximum gain)
Line, auX:                      MORE ThAN +4dbV
phono:                      MORE ThAN -36dbV
Mic:                        MORE ThAN -36dbV
Maximum Output: (Eq Flat, Maximum gain, FX Off, ThD=1%)
Master:                                   MORE ThAN +18dbV (8.0V)
rec:             MORE ThAN +8dbV (2.5V)
phones: (LOAD=32 ohms)                            MORE ThAN +3dbV (1.4V)
Output Noise: (Maximum gain, Eq Flat, W/20khz LPF, A-Weighted, FX OFF)
Line, auX:                      MORE ThAN 80db
phono:                      MORE ThAN 66db
Mic:                        MORE ThAN 64db
channeL baLance:                                                    WIThIN 3db 
Frequency response:  (Eq Flat, Maximum gain, FX Off)
Line/auX:                      20 - 20khz +/-2db
phono:                       20 - 20khz +2 /-3db (RIAA)
Microphone:                                20 - 20khz +2 /-3db
ThD - Total harmonic Distortion: (Eq Flat, Maximum gain, FX Off, W/ 20khz LPF):
Line, auX:                      LESS ThAN 0.04% 20 - 20khz
phono:                                LESS ThAN 0.15% @ 1khz (A-Weighted)
Mic:                         LESS ThAN 0.15% @ 1khz (A-Weighted)
cross t aLk:                                             Maximum gain, Eq Flat, Master Output)
Line, auX, phono:                         More Than 65db @ 1khz between L and R, and Channels
              More Than 70db @ 1khz between Channels
  MX-1400  DSP                                                               S PECiF iC aTiONS 
						

							
Channel Equalizer:
bass:                      +12 +/-2db, below -30db at 70hz
Mid:                        +12 +/-2db, below -30db at 1khz
trebLe:                      +12 +/-2db, below -30db at 13khz 
Microphone Equalizer:
bass:                                               +12 +/-2db, -12 +/-2db at 70hz
Mid:                        +12 +/-2db, -12 +/-2db at 1khz
trebLe:                      +12 +/-2db, -12 +/-2db at 13khz
©American Audio®   -   www.americanaudio.us   -   MX-1400 DSP Instruction Manual Page 25
  MX-1400  DSP                                                                S PECiF iC aTiONS 
						

							
©American Audio® World headquarters:
4295 Charter Street Los Angeles, CA 90058 USA
Tel: 323-582-3322  Fax: 323-582-2941
Web: www.americanaudio.us  E-mail: [email protected]