HPA M1224FX, M1424, M1624FX, M1824 Owner's Manual
Owner’s Manual
M1224FX
M1424
M1624FX
M1824
MONOMONOMONO
AUX
RETURN
CHANNEL 1
STEREO RETURN
AUX/EFX SEND
TAPE IN PHONES/CTRL-R
CH
1
TAPE IN REC OUT
ALT 3/4 OUTPUTFOOT SWITCH
MAIN OUTPUT
CONTROL ROOM
LINE
INSERT
1
MIC
ALT 3/4
MAIN
TAPE IN
PHANTOM POWER POWER
PROGRAM
SELECT
OUT IN
TRIM
PEAK
AUX
EFX
010
5
PRE/POST
PFL
+10
5
0
5
10
15
20
30
40
CHANNEL 2
CH
2
LINE
INSERT
2
MIC
MF
2.5kHz
HF
12kHz
LF
80Hz
PFL
+10
5
0
5
10
15
20
30
40
CHANNEL 3
CH
3
LINE
INSERT
3
MIC
PFL
+10
5
0
5
10
15
20
30
40
CHANNEL 4
CH
4
LINE
INSERT
4
MIC
PFL
+10
5
0
5
10
15
20
30
40
CHANNEL 5/6
CH
5/6
LINE 5
LINE 6
5/6
MIC
PFL
+10
5
0
5
10
15
20
30
40
CHANNEL 7/8
CH
7/8
LINE 7
LINE 8
7/8
LINE 9
LINE 10
LINE 9
LINE 10
LINE 11
LINE 12
9/10
MIC
LINE 11
LINE 12
11/12
PFL
+10
5
0
5
10
15
20
30
40
CHANNEL 9/10
CH
9/10
PFL
+10
5
0
5
10
15
20
30
40
CHANNEL 11/12
CH
11/12
PFL
+10
5
0
5
10
15
20
30
40
EFX RTN
EFX
PFL
+10
5
0
5
10
15
20
30
40
ALT 3/4
TO MAIN L/R
+10
5
0
5
10
15
20
30
40
+10
5
0
5
10
15
20
30
40
ON
OFF
-20
-10
-7
-4
-2
0
+2
+4
+7
CLIP
AUX
EFX
HEADPHONE
-30+14
-6 -50
30
-15 +15
0
-12 +12
0
-15 +15
0
010
5
PAN
LR
TRIM
PEAK
AUX
EFX
010
5
PRE/POST
MF
2.5kHz
HF
12kHz
LF
80Hz
-30+14
-6 -50
30
-15 +15
0
-12 +12
0
-15 +15
0
010
5
PAN
LR
TRIM
PEAK
AUX
EFX
010
5
PRE/POST
MF
2.5kHz
HF
12kHz
LF
80Hz
-30+14
-6 -50
30
-15 +15
0
-12 +12
0
-15 +15
0
010
5
PAN
LR
TRIM
PEAK
AUX
EFX
010
5
PRE/POST
MF
2.5kHz
HF
12kHz
LF
80Hz
-30+14
-6 -50
30
-15 +15
0
-12 +12
0
-15 +15
0
010
5
PAN
LR
TRIM
PEAK
AUX
EFX
010
5
PRE/POST
MF
2.5kHz
HF
12kHz
LF
80Hz
-20+20
-10 -50
30
-15 +15
0
-12 +12
0
-15 +15
0
010
5
BALANCE
LR
TRIM
PEAK
AUX
EFX
010
5
PRE/POST
MF
2.5kHz
HF
12kHz
LF
80Hz
-20+20
-10 -50
30
-15 +15
0
-12 +12
0
-15 +15
0
010
5
BALANCE
LR
AUX
EFX
010
5
PRE/POST
MF
2.5kHz
HF
12kHz
LF
80Hz
-15 +15
0
-12 +12
0
-15 +15
0
010
5
BALANCE
LR
AUX
EFX
010
5
PRE/POST
MF
2.5kHz
HF
12kHz
LF
80Hz
-15 +15
0
-12 +12
0
-15 +15
0
010
5
AUX
010
5
AUX
010
5
MAIN
010
5
EFX
010
5
LEVEL
010
5
LEVEL
010
5
AUX
010
5
BALANCE
LR
PERFORMANCE
HALL REVERB
PLATE REVERB
SPRING REVERB
ECHO
FLANGE+VERB
CHORUS+VERB
ECHO+VERB
CHORUS
FLANGE
PFL
12 CH MIXING CONSOLE
M1224FX
HPA
75Hz 75Hz 75Hz 75Hz 75Hz 75Hz
L/ALT3 R/ALT4
MAIN L/R
MUTE
ALT 3/4
MUTE
ALT 3/4
MUTE
ALT 3/4
MUTE
ALT 3/4
MUTE
ALT 3/4
MUTE
ALT 3/4
MUTE
ALT 3/4
MUTE
ALT 3/4
ON
Professional Stereo Compact Mixer
WARNING
1
M1224FX / M1424 / M1624FX / M1824
Introductions ...................................................................................... 2
Features .............................................................................................. 3
Front Panel ........................................................................................ 4
Input Section .......................................................................... 4
Master Section ....................................................................... 6
Input/Output Section Connectors ..................................... 8
Rear Panel ...................................................................................... 10
Point to Remember ......................................................................... 11
Connections ..................................................................................... 12
Applications ................................................................................... 13
Block Diagram ............................................................................... 15
Specifi cations ................................................................................ 16
General Specifi cations ......................................................... 16
Input/Output Specifi cations ............................................... 17
Service ............................................................................................... 18
Procedures ............................................................................. 18
Schematic .............................................................................. 18
Parts List ................................................................................. 18
Table of Contents
Table of Contents
2
M1224FX / M1424 / M1624FX / M1824
Introduction
Welcome
Thank you for purchasing M 4-Bus SERIES Mixing Console. The M 4-Bus Series provides an
excellent balance of operability, functionally and ease of use. In order to take full advantage of
the M 4-Bus Series capabilities and enjoy years of trouble - free use, please read this manual
carefully.
Unpacking
Although it is neither complicated to install nor diffi cult to operate your set, a few minutes of your
time is required to read this manual for a properly wired installation and becoming familiar with
its many features and how to use them. Please take a great care in unpacking your set and do
not discard the carton and other packing materials. They may be needed when moving your set
and are required if it ever becomes necessary to return your set for service. Never place the unit
near radiators, in front of heating vents, to direct sun light, in excessive humid or dusty location
to avoid early damage and for your years of quality entertainment. Connect your complementary
components as illustrated in the following pages.
MONOMONOMONO
AUX
RETURN
CHANNEL 1
STEREO RETURN
AUX/EFX SEND
TAPE IN PHONES/CTRL-R
CH
1
TAPE IN REC OUT
ALT 3/4 OUTPUTFOOT SWITCH
MAIN OUTPUT
CONTROL ROOM
LINE
INSERT
1
MIC
ALT 3/4
MAIN
TAPE IN
PHANTOM POWER POWER
PROGRAM
SELECT
OUT IN
TRIM
PEAK
AUX
EFX
010
5
PRE/POST
PFL
+10
5
0
5
10
15
20
30
40
CHANNEL 2
CH
2
LINE
INSERT
2
MIC
MF
2.5kHz
HF
12kHz
LF
80Hz
PFL
+10
5
0
5
10
15
20
30
40
CHANNEL 3
CH
3
LINE
INSERT
3
MIC
PFL
+10
5
0
5
10
15
20
30
40
CHANNEL 4
CH
4
LINE
INSERT
4
MIC
PFL
+10
5
0
5
10
15
20
30
40
CHANNEL 5/6
CH
5/6
LINE 5
LINE 6
5/6
MIC
PFL
+10
5
0
5
10
15
20
30
40
CHANNEL 7/8
CH
7/8
LINE 7
LINE 8
7/8
LINE 9
LINE 10
LINE 9
LINE 10
LINE 11
LINE 12
9/10
MIC
LINE 11
LINE 12
11/12
PFL
+10
5
0
5
10
15
20
30
40
CHANNEL 9/10
CH
9/10
PFL
+10
5
0
5
10
15
20
30
40
CHANNEL 11/12
CH
11/12
PFL
+10
5
0
5
10
15
20
30
40
EFX RTN
EFX
PFL
+10
5
0
5
10
15
20
30
40
ALT 3/4
TO MAIN L/R
+10
5
0
5
10
15
20
30
40
+10
5
0
5
10
15
20
30
40
ON
OFF
-20
-10
-7
-4
-2
0
+2
+4
+7
CLIP
AUX
EFX
HEADPHONE
-30+14
-6 -50
30
-15 +15
0
-12 +12
0
-15 +15
0
010
5
PAN
LR
TRIM
PEAK
AUX
EFX
010
5
PRE/POST
MF
2.5kHz
HF
12kHz
LF
80Hz
-30+14
-6 -50
30
-15 +15
0
-12 +12
0
-15 +15
0
010
5
PAN
LR
TRIM
PEAK
AUX
EFX
010
5
PRE/POST
MF
2.5kHz
HF
12kHz
LF
80Hz
-30+14
-6 -50
30
-15 +15
0
-12 +12
0
-15 +15
0
010
5
PAN
LR
TRIM
PEAK
AUX
EFX
010
5
PRE/POST
MF
2.5kHz
HF
12kHz
LF
80Hz
-30+14
-6 -50
30
-15 +15
0
-12 +12
0
-15 +15
0
010
5
PAN
LR
TRIM
PEAK
AUX
EFX
010
5
PRE/POST
MF
2.5kHz
HF
12kHz
LF
80Hz
-20+20
-10 -50
30
-15 +15
0
-12 +12
0
-15 +15
0
010
5
BALANCE
LR
TRIM
PEAK
AUX
EFX
010
5
PRE/POST
MF
2.5kHz
HF
12kHz
LF
80Hz
-20+20
-10 -50
30
-15 +15
0
-12 +12
0
-15 +15
0
010
5
BALANCE
LR
AUX
EFX
010
5
PRE/POST
MF
2.5kHz
HF
12kHz
LF
80Hz
-15 +15
0
-12 +12
0
-15 +15
0
010
5
BALANCE
LR
AUX
EFX
010
5
PRE/POST
MF
2.5kHz
HF
12kHz
LF
80Hz
-15 +15
0
-12 +12
0
-15 +15
0
010
5
AUX
010
5
AUX
010
5
MAIN
010
5
EFX
010
5
LEVEL
010
5
LEVEL
010
5
AUX
010
5
BALANCE
LR
PERFORMANCE
HALL REVERB
PLATE REVERB
SPRING REVERB
ECHO
FLANGE+VERB
CHORUS+VERB
ECHO+VERB
CHORUS
FLANGE
PFL
12 CH MIXING CONSOLE
M1224FX
HPA
75Hz 75Hz 75Hz 75Hz 75Hz 75Hz
L/ALT3 R/ALT4
MAIN L/R
MUTE
ALT 3/4
MUTE
ALT 3/4
MUTE
ALT 3/4
MUTE
ALT 3/4
MUTE
ALT 3/4
MUTE
ALT 3/4
MUTE
ALT 3/4
MUTE
ALT 3/4
ON
M1224FX/M1424/M1624FX/M1824
Professional Stereo Compact Mixer
Introductions
3
M1224FX / M1424 / M1624FX / M1824
Features
Features
-4 MONO(M1224FX/M1424),8 MONO(M1624FX/M1824) INPUT AND 4 STEREO(M1224FX/
M1624FX), 5STEREO(M1424/1824)INPUT
Any sound source of microphones, cassette decks, electronic guitars, organs can be applied to
the channel input.
- 4 MONO(M1224FX/M1424),8 MONO(M1624FX/M1824) CHANNEL INSERT
- MAIN L/R AND ALT 3/4 OUTPUT
Main L/R and ALT 3/4 are provided for convenient use.
- AUX RETURN AND 2 AUX SEND
For convenient use of external equipment, AUX SEND and AUX RETURN function are provided.
- CHANNEL EQUALIZER
The 3 band equalizer are designed for ±15dB(HF,LF), ±12dB(MF) control on input channel.
- PFL FUNCTION OF ALL CHs
The PFL function allows you to monitor any input channel before the channel fader through
headphone outputs and control room outputs .
- DSP FUNCTION : 100 SELECTABLE PRESETS (ONLY M1224FX/M1624FX)
A built-in 24bit DSP(Digital Signal Processor ) with 100 selectable presets including Reverb,
Delay and Chorus, offers dazzling studio quality effects..
- FOOT SWITCH (ONLY M1224FX/M1624FX)
- PHANTOM POWER(+48V)
Phantom power is provided for easy connection of condenser microphones requiring an external
power supply.
- RACK MOUNTING
Detachable rack ears for mounting in a standard 19” rack enclosure.
- EXTERNAL AC POWER
4
M1224FX / M1424 / M1624FX / M1824 Front Panels
CHANNEL 8
CH
8
PFL
+10
5
0
5
10
15
20
30
40
CHANNEL 11/12
CH
11/12
PFL
+10
5
0
5
10
15
20
30
40
CHANNEL 13/14
CH
13/14
PFL
+10
5
0
5
10
15
20
30
40
TRIM
PEAK
AUX
EFX
010
5
PRE/POST
MF
2.5kHz
HF
12kHz
LF
80Hz
-30+14
-6 -50
30
-15 +15
0
-12 +12
0
-15 +15
0
010
5
PAN
LR
TRIM
PEAK
AUX
EFX
010
5
PRE/POST
MF
2.5kHz
HF
12kHz
LF
80Hz
-20+20
-10 -50
30
-15 +15
0
-12 +12
0
-15 +15
0
010
5
BALANCE
LR
AUX
EFX
010
5
PRE/POST
MF
2.5kHz
HF
12kHz
LF
80Hz
-15 +15
0
-12 +12
0
-15 +15
0
010
5
BALANCE
LR
75Hz 75Hz
MUTE
ALT 3/4
MUTE
ALT 3/4
MUTE
ALT 3/4
Front Panels Controls
(1). PEAK LED INDICATOR
This LED indicators let you check the level of the
signal input to the channel. The peak indicator
lights when the input signal reaches 5dB below
the channel’s clipping point. This indicator show
the level of the Post-EQ/ pre-fader signal. If the
PEAK indicator lights more than briefl y on high-
level transients, you should use the TRIM control
to decrease the input sensitivity of the channel. If
this dose not work, reduce the output level of the
connected source.
(2). TRIM CONTROL
According to the level of the input signal, use this
knob to adjust the input to an appropriate level.
The best balance of S/N and dynamic range will
be achieved if you adjust the TRIM control so
that the peak indicator lights occasionally. This
control adjusts the channel’s mic input sensitivity between -50dB and -6dB and the line input
sensitivity between -30dB and +14dB.
The mono/stereo combination input channel have
a sensitivity of +20dB to-20dB
(3). HPF(High-Pass Filter)
This switch toggles the HPF on or off. To turn the
HPF on, press the switch In ( ). The HPF cut
frequencies below 75Hz
(4). 3BAND EQUALIZER CONTROLS
This is a 3-band equalizer with center frequencies, range and type as shown below. The
frequency response is fl at when the knob is in the
“0”position.
MONO MONO STEREO
STEREO
COMBINATION
1.CHANNEL CONTROL SECTION
(5). AUX CONTROLS
This knobs control the level of the signals sent to
AUX bus.
(6). PRE/POST SWITCH
This button determines whether the AUX signal
is Pre or Post fader. Pre means not affected by
the position of the channel fader. Post means is
affected by the position of the channel fader.
CONTROL
MAX.
BOOST/CUT
FREQUENCY TYPE
HIGH ±15dB 12kHz Shelving
MID ±12dB 2.5kHz Peaking
LOW ±15dB 80Hz Shelving
2
3
4
5
6
7
8
9
10
11
12
1
5
M1224FX / M1424 / M1624FX / M1824
(7). EFX CONTROLS
This knobs control the level of the signals sent
to EFX bus. The channel signals mixed by this
bus have their overall level set by the EFX SEND
Control to the EFX SEND jack on the front panel.
The EFX bus signal is also fed into the internal
digital signal processor(only M1224FX/1624FX).
Since this control is placed after the channel
fader, the signal level will be affected by the
channel fader setting.
(8). PAN /BAL CONTROL
PAN (Mono Channel)
This control pans the channel signal across the
master L and R buses, thus determining the perceived position of the sound from that channel in
the output stereo sound fi eld. If a PAN control is
set all the way to the left,for example, the sound
from that channel will be heard from the left
speaker system only.
If it is set all the way to the right, the sound will
be heard from the right speaker system only.
Intermediate settings will cause the sound to
appear at corresponding locations in the stereo
sound fi eld.
BALANCE (Stereo Channel)
This control adjusts the balance or the L/R position of the stereo input signal.
Turning the BALANCE control to the left of center
moves the apparent source toward the MAIN
MIX L bus,turning it to the right moves the source
toward the MAIN MIX R bus.
(9). MUTE/ALT 3-4 SWITCH
When the Mute/ALT 3-4 switch is depressed, a
channel output will be routed to the ALT 3-4 output instead of the main L/R out.
ALT 3-4 bus offers you a second independent
stereo sub mix with its own sub master stereo
fader.
(10). PFL SWITCH
When these switch is depressed, the channel
input signal can be routed to the PFL bus.
This switch allows you to monitor the pre-fader
channel input signal through headphone outputs
and control room outputs.
(11). PFL INDICATOR
This indicator lights when the PFL switch is turned on.
(12). CHANNEL FADER
This is the channels main level control. It determines the level of the signal that is sent from the
channel to the master mixing and effect buses.
It is the settings of the input channel faders that
determine the mix, or the balance of sound levels
between the instruments or other sources connected to the inputs. When a channel is not being
used, its fader should be set at the minimum position to prevent the addition of unwanted noise
to the main program signal.
Front Panels Controls
Front Panels
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