American Audio Mixer M1624FX User Manual

							
©American Audio®   -   www.americanaudio.us   -   M1624FX Instruction Manual Page 11
  M1624FX                                              Mai N CONTROLS  aNd  FUNCT iONS
11
12
22
21
18
17
16
15
14
13
26
25
24
23
27
20
19
MAIN CONTROL SECTION
Effects List 
						

							
©American Audio®   -   www.americanaudio.us   -   M1624FX Instruction Manual Page 12
  M1624FX                                                      Mai N CONTROLS  aNd  FUNCT iONS  cont.
mAIN CONTROL SECTION:
11. DSP PROGRA m DISPLAY - This displays shows the number of the selected effect. Please see the 
effect list located on the MAIN CONTROL SECTION of the mixing console.
12. DSP PROGRA m SELECT KNOB - The program knob wil allow you to select one of the 100 built-in 
digital effects. This control board has a 24 b it digital high quality effect processor. 
13. AUX PRE CONTROL - Use this control to adjust the signal level sent from the internal digital effect 
to the AUX bus.
14. STEREO  RETURN  CONTROL - Use the corresponding control knobs to adjust the signal level of 
the mixed L/R signal sent from the RETURN jack (L & R MONO) to the AUX bus.
15.  mASTER SEND CONTROLS - 
AUX  CONTROL  kNObS  -  Use  this  control  knob  to  adjust  the  signal  level  sent  to  the  AUX  output 
jack. 
MASTER EFFECT CONTROLS - Use this knob to adjust the signal level of the EFFECT bus sent to the 
EFFECT output jack. 
16. TAPE  IN  CONTROL  - This  knob  controls  the  playback  signal  level  from  the  component  that  is 
connected to the TAPE IN RCA JACkS located on at the top panel of the mixing board.  
17. DSP ON/OFF BUTTON - This button turns the internal effect program on/off.
18. PFL BUTTON - Pressing this button “In” will allow you to send the effect signal to the PFL bus.   
19.  EFX RTN FADER - With this fader you can adjust the signal level sent from the digital effect to 
the MAIN bus.
20. ALT 3/4  FADER - With this fader you can adjust the final combined stereo signal level that is sent 
to the ALT 3/4 output jacks.
21. POwER INDICATOR - This indicator will light when mixer power switch is turned on.
22. PHANTO m POwER BUTTON - When this button is pressed “In”, the mixer will supply power to 
all  channels  the  provide  XLR  MIC  input  jacks.  Use  this  function  when  using  one  or  more  condensor 
microphones.
Note:  when this function is active, the mixer supplies DC +48V power to pins 2 and 3 of all XLR 
type m IC input jacks.
•  Leave this switch off if you do not need phantom power. 
•  When you turn this function on, make sure that only condenser MICs are connected to the XLR         
 
    input jacks. Devices other then condensor MICs may be damaged if connected to the phantom 
    power supply.
•  The switch may be left on when connecting to balanced dynamic microphones.
•  To avoid damage to speakers, be sure to turn off the amplifier (on powered speakers) before turn-       
 
    ing this function on or off. Also, to avoid loud noises that could cause hearing loss or device dam-
    age, we recommend that you turn all out controls (MAIN, master fader, ALT 3/4 fader etc.) to the     
 
    minimum settings before activating this function.
23. LEVEL mETER - This LED displays the signal level of the selected LEVEL METER SIgNAL  bUTTON. 
When the meter lights up RED then the output is hitting the clipping lev\
el.
24. CONTROL  ROOm/HEADPHONE  CONTROL  - This  controls  the  signal  level  that  is  sent  to  the  
						

							
©American Audio®   -   www.americanaudio.us   -   M1624FX Instruction Manual Page 13
  M1624FX                 Mai N CONTROLS  aNd  FUNCT iONS  cont.
CONTROL ROOM JAC kS or HEADPHONE JAC k.  
25.  LEVEL- mETER  SIGNAL  BUTTONS  - Use  these  buttons  to  select  the  signal  that  is  sent  to  the 
CONTROL  ROOM  outputs  and/or  HEADPHONE  output.  The  ouput  level  will  be  shown  in  the  LEVEL 
METER.  Please  see  the  illustration  below  to  see  how  the  button  settings  correspond  to  the  signal 
selection.  
 
26. TO  mAIN BUTTON - When this button is pressed “In” (On), the mixer will send the signal from the 
ALT 3/4 to the MAIN L/R outputs. 
27. m AIN L/R FADERS - This fader adjusts the final signal level sent to the MAIN L/R output.
SignalSwitchPFLALT3 / 4
PFLON
TAPE IN
OFF
OFF
OFF
ALT3/4
MAIN
ON
ON
C-R OUT&PHONES
TAPE IN 
						

							
©American Audio®   -   www.americanaudio.us   -   M1624FX Instruction Manual Page 14
INPUT AND OUTPUT CONNECTIONS:
28. CHANNEL INPUT JACKS - 
mIC JACKS - These are balanced 3-pin XLR-type input jacks.
BALANCED  LINE  IN  JACKS  - These  standard  1/4”  TRS  phone  jack  are  used  for  balanced  or 
unbalanced line level signals. Some examples of line level equipment include most electronic key-
boards,  synthesizers,  turntables  (with  appropriate  pre-amps),  tape  decks  and  line  outputs  from 
other mixers.
29.  CHANNEL  STEREO  INPUT  JACKS   - These  are  unbalanced  stereo  line  input  jacks.  The  two 
jacks provided are 1/4” and RCA.
30. TAPE INPUT JACKS - These RCA jacks are used to connect a stereo sound source. Use these 
jacks  when  you  want  to  connect  a  CD,  cassette,  or  DAT,  directly  to  the  mixer  for  monitoring.  Use 
the TAPE IN CONTROL to adjust the signal level.
31.  REC  OUT  JACKS  - These  jacks  send  the  PRE  FADER  signal  from  the  master  bus  to  a  tape 
deck for recording.
  M1624FX                    iNPUT  aNd  OUTPUT  CONNECT iONS
333130322928
403638393537
INPUT AND OUTPUT CONNECTIONS
34 
						

							
©American Audio®   -   www.americanaudio.us   -   M1624FX Instruction Manual Page 15
32.  FOOT  SwITCH  JACK  - You  can  connect  a  foot  switch  to  this  jack,  and  use  the  foot  jack  to 
toggle the digital effects on/off.
33.  ALT  3/4  OUPUT  JACKS  - These  unbalanced  1/4”  phone  type  jacks  output  the  ALT  3/4  signal 
to the input of a MTR, external mixer, or other device.
34.  CONTROL  ROO m  OUTPUT  JACKS  - These  stereo  1/4”  phone  type  output  jacks  send  the 
mixed signal to a monitoring system. Use the CONTROL ROOM/HEADPHONE CONTROL to adjust 
the output signal level. The signal monitored by these jacks is select by the using the LEVEL METER 
SI gNAL  bUTTONS.
35. HEADPHONE JACK - Use this jack to connect headphones to the mixing board.
NOTE: The  signal  monitored  by  these  jacks  is  select  by  the  using  the  LEVEL  METER  SI gNAL 
bUTTONS, the TAPE IN CONTROL and the PFL  bUTTON on the input channels.
36.  mAIN L/R OUTPUT JACKS - These jacks deliver a stereo output signal to a amplifier or pow-
ered speakers. You can also use these outputs to send a signal you wish to record. You can control 
the signal level control using the MAIN FADER located in the MASTER CONTROL section.
37. AUX OUTPUT JACK - This 1/4” output jack send a signal from the AUX bus to a cue box, effec-
tor, or other monitoring system.
38. EFX OUTPUT JACK - This unbalanced phone output jack sends a signal to an external effect 
machine.
39. STEREO RETURN L ( mONO) - These are unbalanced 1/4” TRS phone-type line input jacks. The 
signal received by these jacks is sent to the MAIN bus and AUX bus. These jacks are
typically used to receive a return signal from an external effector (reverb, delay, etc.)
40. CHANNEL INSERT I/O JACK - These are 1/4” TRS (tip, ring, sleeve) phone jacks that support 
bi-directional  operation.  These  input/output  jacks  are  located  between  the  head-amplifier  and  the 
high pass filter. These jacks can be used to independently connect these channels to devices such 
as graphic equalizers, compressors, and noise filters.  
NOTE: Connection to an I/O jack requires a special separately-sold insertion cable. Please see the 
illustration below.
  M1624FX                 iNPUT  aNd  OUTPUT  CONNECT iONS  cont.
Tip:Output(Send to external device)
Sleeve:Ground
Ring:Input(Return from external device)
INPUT/OUTPUT (I/O) JACk 
						

							
©American Audio®   -   www.americanaudio.us   -   M1624FX Instruction Manual Page 16
Insert Points
Amp/Line Input
Headphones
Unbalanced
Input/Output
AUX Send
Ring
Ring
TipTipSleeve
Sleeve
SendReturnScreen
Hot(positive)Cold(negative)Screen
Left SignalRight SignalGround
SignalGround
3 Pole (Stereo) Jack
2 Pole (Mono) Jack
RingTipSleeve
TipSeeve
2
1
3
Balanced Input
Hot (positive)
Hot (positive)
Sleeve
Screen
Cold (negative)
Cold (negative)
  M1624FX                                                                                                CONNECTORS
- Always use good quality twin screened audio cable. Check for instability at the output.
- Always connect both conductors at both ends, and make sure that the screen is connected only at   
   one end.
- Do not disconnect the mains earth from each piece of equipment. This is needed to provided both   
   safety and screen returns to the system star point.
- Equipment which has balanced inputs and outputs may need to be electri\
cally isolated from the    
   equipment rack and/or other equipment, to avoid earth loops.
It is important to remember that all equipment which is connected to the mains it a potentia\
l source 
of hum and interference and may radiate both electrostatic or electromagnetic radiation. In addition, 
the mains will also act as a carrier for many forms of RF interference generated by electric motors, 
air-conditioning units, hyristor light dimmers etc. Unless the earth system\
 is clean, all attempts to 
improve hum noise levels will be ineffective. In extreme cases there will be no alternative but to pro-
vide a completely separate and independent ‘technical earth’ to replace the incoming ‘noisy earth’. 
However, always consult your local electricity supply authority to ensure that safety regulations are 
not being infringed.
American Audio products are manufactured and wired to accept wiring practices used throughout 
the world. 
balanced XLR connections are wired as described, please see the diagram shown below:
Pin #1 Shield
Pin #2 Positive
Pine #3 Negative
balanced 1/4” TRS connections are wired as described, please see the diagram shown below:
Tip is Positive
Ring is Negative
Sleeve is Shield 
						

							
©American Audio®   -   www.americanaudio.us   -   M1624FX Instruction Manual Page 17
2
3
1
TRS
2
3
1
2
3
1
(XLR)
(XLR)
White(Red)/HIGH
A. XLR**
B.TRS PHONE
Black/LOW
Shield/GND
White(Red)/HIGHBlack/LOW
Shield/GND
TS
TTSS
2
3
1(XLR)
(Standard Phone)
D.STANDARD     PHONE
E. SHIELD/GND     PHONE
White(Red)/HIGHBlack/LOW
Shield/GND
White(Black)/HIGH
Shield/GND
TS2
3
1(XLR)
C. STANDARD     PHONE
White(Red)/HIGHBlack/LOW
Shield/GND
Floating or Balanced
low impedance: most 
professional equipment
line in and line out,
microphones.
Unbalanced
low impedance: some
professional equipment
and microphones.
Unbalanced
high impedance: most 
hi-fi equipment.
Unbalanced
high impedance: most 
hi-fi equipment.
REMOTE DEVICE                                                           \
                                             REMOTE SIDE OF CABLE
DESCRIPTION                                                             \
                 CABLE                  (Connector Type)
  M1624FX                                                                                                CONNECTORS
Connector and Cable Configurations
Connector and cable configurations are recommended for use with the M 4 bus series. These cables 
are based on the use of auxillary equipment that is isolated from the AC power mains. 
						

							
©American Audio®   -   www.americanaudio.us   -   M1624FX Instruction Manual Page 18
  M1624FX                                                           HOME STU diO  S ET -UP
SETUP  PROCEdURE:
1. before connecting to microphones and instruments, be sure that all devices are turned off. Also 
be sure that all of the mixer’s channel fader and master control faders are set all the way down.
2. For each connection, connect one end of the cable to the relevant microphone or instrument and
connect the other end to the appropriate input jack on the mixer.
 NOTE: Where an input channel provides both a MIC INPUT jack and a LINE INPUT jack, you    
     may use either one of these jack but you may not use both at the same t\
ime. Please    
    connect to only one of these jacks on each channel.
3. To avoid causing damage to speaker, power up the devices in the following order: Peripheral 
devices mixer power amps (or powered speakers).
 NOTE: When shutting the system down, turn off the power in the opposite order: Power amps
     (powered speakers) mixer Peripheral devices.
MONOMONOMONOAUXRETURN
TAPE INREC OUT
ALT 3/4 OUTPUTFOOT SWITCH
MAIN OUTPUT
CONTROL ROOM
LINE
INSERT
1MIC
OUTIN
LINE
INSERT
2MIC
LINE
INSERT
3MIC
LINE
INSERT
4MIC
LINE5
LINE6
5/6MIC
LINE7
LINE8
7/8
LINE9
LINE 10
LINE9
LINE 10
LINE 11
LINE 12
9/10MIC
LINE 11
LINE 12
11/12
AUX
EFX
HEADPHONE
Microphone
GuitarPowered MonitorSpeakers
Foot Switch
Sound Source(CD,MD,DAT,Cassette,Video etc.)
Master Recorder(MD,DAT.)
Synthesizer
MTR
Rhythm Machine
Effector
Effector
COMPACTDISCPLAYER
PROGRAMEJECTPOWERREPEATSKIPFWDMINMAX
PLAY/PAUSELEVELSTOPREW
COMPACTDISCPLAYER
PROGRAMEJECTPOWERREPEATSKIPFWDMINMAX
PLAY/PAUSELEVELSTOPREW 
						

							
©American Audio®   -   www.americanaudio.us   -   M1624FX Instruction Manual Page 19
  M1624FX                                                  Liv E  P ERFORM aNCE   SET -UP
MONOMONOMONOAUXRETURN
TAPE INREC OUT
ALT 3/4 OUTPUTFOOT SWITCH
MAIN OUTPUT
CONTROL ROOM
LINE
INSERT
1MIC
OUTIN
LINE
INSERT
2MIC
LINE
INSERT
3MIC
LINE
INSERT
4MIC
LINE5
LINE6
5/6MIC
LINE7
LINE8
7/8
LINE9
LINE 10
LINE9
LINE 10
LINE 11
LINE 12
9/10MIC
LINE 11
LINE 12
11/12
AUX
EFX
HEADPHONE
Guitar
Main Speakers(External)
PowerAmp
Synthesizer
Effector
Effector
Stage (Internal)
ST
AUX(PRE)Audience(External)ST
Microphone
Bass
Foot Switch
CD Player
Monitor Speakers(Internal)
PowerAmp
CD,Cassette,orDATRecorder
PRE
DI 
						

							
©American Audio®   -   www.americanaudio.us   -   M1624FX Instruction Manual Page 20
Program
No.(Hex)Effect NameEfx LevelRoom
Size
00h78.00%8.00mc
01h63.00%36.78mc
02h13.00%9.00mc
03h78.00%8.00mc
04h13.00%9.00mc
05h100.00%8.00mc
06h91.00%8.00mc
07h28.00%30.61mc
08h100.00%12.11mc
09h78.00%35.75mc
10h44.00%8.00mc
11h35.00%9.00mc
12h35.00%8.00mc
13h27.00%9.00mc
14h21.00%8.00mc
15h27.00%9.00mc
16h13.00%9.00mc
17h21.00%9.00mc
18h27.00%9.00mc
19h58.00%9.00mc
20h78.00%8.00mc
21h78.00%8.00mc
22h78.00%8.00mc
23h26.00%45.00mc
24h78.00%45.00mc
25h78.00%8.00mc
26h78.00%8.00mc
27h78.00%45.00mc
28h52.00%45.00mc
29h63.00%36.78mc
30h13.00%9.00mc
31h13.00%8.00mc
32h13.00%8.00mc
33h13.00%9.00mc
34h13.00%9.00mc
35h13.00%9.00mcMedium Bright Spring
Short Dark Spring
Short Bright Spring
Medium Spring
Medium Dark Spring
Long Plate
Long Dark Plate
Best Plate
Short Spring
Long Bright Plate
Medium Dark Plate
Medium Bright Plate
Medium Plate
Best Hall
Short Plate
Short Dark Plate
Short Bright Plate
Medium Bright Hall
Long Hall
Long Dark Hall
Long Brigh Hall
Short Dark Hall
Short Bright Hall
Medium Hall
Medium Dark Hall
Echo-Verb echo long verb
Slow st chor
Hall best hall 2
Short Hall
Effect Description
Medium Bright Plate
Best Plate
Medium Dark Spring
Short Plate
Long Bright Spring
Slapback 2
Slapback w verb
Performance
Hall
Plate
Spring
36h13.00%9.00mc
37h13.00%9.00mc
38h13.00%9.00mc
39h13.00%9.00mc
40h100.00%8.00mc
41h80.00%8.00mc
42h100.00%8.00mc
43h100.00%8.00mc
44h100.00%8.00mc
45h100.00%8.00mc
46h100.00%8.00mc
47h100.00%8.00mc
48h100.00%8.00mc
50h100.00%34.72mc
51h100.00%34.72mc
52h99.00%29.58mc
53h100.00%18.28mc
54h100.00%29.58mc
55h100.00%29.58mc
56h100.00%29.58mc
57h100.00%29.58mc
58h100.00%21.36mc
59h100.00%29.58mc
60h100.00%30.61mc
61h100.00%36.78mc
62h100.00%36.78mc
63h79.00%29.58mc
64h79.00%29.58mc
65h100.00%30.61mc
66h100.00%29.58mc
67h100.00%31.64mc
68h100.00%36.78mc
69h100.00%29.58mc
70h33.00%17.25mc
71h32.00%26.50mc
72h53.00%40.89mc
73h37.00%28.56mc
74h23.00%45.00mc
Echo-Verb 2
Echo-Verb 4
Echo-Verb 3
Trem Chorus Long Reverb
Big Chorus Medium Reverb
Echo-Verb 1
Hard echo Medium verb
Medium Chorus Long Reverb
Fast Chorus Short Reverb
Fast Chorus Long Reverb
Trem Chorus Medium Reverb
Slow Chorus Short Reverb
Slow Chorus Medium Reverb
Slow Chorus Long Reverb
Medium Chorus Medium Reverb
Stereo Flanger Medium Reverb
Stereo Flanger Long Reverb
Whip Flanger Short Reverb
Whip Flanger Long Reverb
It Flanger Medium Reverb
Medium Flanger Medium Reverb
Slow Flanger Long Reverb
Flanger Long Reverb
650-375ms Delay cross Feedback
650ms Delay High Feedback
Flanger Reverb
Flanger Short reverb
420ms Delay Low Feedback
550-275ms Delay cross Feedback
550ms Delay High Feedback
550ms Delay Low Feedback
Best Spring
Slapback 2
Short Echo
420ms Delay High Feedback
Long Spring
Long Dark Spring
Long Bright Spring
Echo
Flanger+Verb
Chorus+Verb
Echo+Verb
  M1624FX                                                                                              E FFECTS  LiST