Inter-m RMX-1426 User manual

OPERATING MANUAL
AUDIO MIXER
4 PROGRAM
RMX-1426

11
UNPACKING AND INSTALLATION
Although it is neither complicated to install nor difficult 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 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 page.
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK.
DO NOT REMOVE COVER (OR BACK).
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
WARNING
To prevent fire or shock hazard, do not
expose the unit to rain or moisture.
This symbol is intended to alert the user to the
presence of uninsulated “dangerous voltage” within
the product’s enclosure that may be of sufficient
magnitude to constitute a risk of electric shock to
persons.
This symbol is intended to alert the user to the
presence of important operation and maintenance
(servicing) instructions in the literature accompanying
the appliance.
Caution: To prevent electric shock do not use this (polarized) plug with
an extension cord, receptacle or other outlet unless the blades
can be fully inserted to prevent blade exposure.
Attentions: Pour prévenir les chocs électriques ne pas utiliser cette fiche
polarisée avec un prolongateur, une prise de courant on une
autre sortie de courant, sauf si les lames peuvent étre
insérées à fond sans en laisser aucune partie à découvert.

22
FEATURES
• 6 MONO, 4 STEREO CHANNEL INPUT AND 4 OUTPUT
Any sound source of microphones, cassette deck, compact disc and electronic instruments can be applied
to mono input channel, especially 4 channels are designed for stereo function. 4 channel output are
provided for convenient use.
• OUTPUT ASSIGN AND OUTPUT CHANNEL ON SWITCH
Each of the all input channel provided 4 output assign and output channel ON switch.
• INPUT(PFL FUNCTION) AND OUTPUT MONITORING
You can monitor the input and output signals by headphone and monitor output with selector conveniently.
• SUB INPUT AND OUTPUT INSERT
Sub inputs and output insert are provided to connect the effect equipment.
• 1 STEREO EFX RETURN AND SEND
For the convenient use of equipment 1 EFX SEND and 1 stereo EFX RETURN are provided.
• CHANNEL EQUALIZER
The 2 band equalizer are designed for 15dB control on all input channel.
• +48V PHANTOM POWER
Phantom power is provided at each mono channel for condenser microphones.

FRONT PANEL CONTROLS
33
INPUT CONTROL PART
1. PEAK INDICATOR
This indicator detects peak level after the EQ.
It will light red at 3dB before clipping to warn that clipping level has nearly been reached.
2. TRIM [GAIN CONTROL]
The gain control adjusts the gain of the input according to the relevant input sound source.
Gain adjusting range of the this gain is 44dB.
For Mic input connected to the XLR connector, the range is -16dB~-60dB.
For Line input connected to the phone connector, the range is +24dB~-20dB.
3. INPUT SELECTOR
This switch selects the input connector for the channel.
When MIC( ) is selected, the input signal will be taken MIC connector. (balanced XLR type)
When LINE( ) is selected, the input signal will be taken LINE connector. (balanced XLR type)
4. EQ CONTROL
The equalizer section provides the high and low range at the following frequencies.
HIGH : 12KHz, 15dB, shelving type
LOW : 80Hz, 15dB, shelving type
5. AUX CONTROL
The volume control the level of the signal that is output to the AUX bus.
AUX is placed before the channel fader, it will be not affected by the channel fader.
6. EFX CONTROL
The volume control the level of the signal that is output to the EFX bus.
EFX is placed after the channel fader, it will be affected by the channel fader.
LINE
LINE
LINE
LINE
LINE
LINE
LINE
LINE
LINE
LINE
4
3
2
1
PFL
PEAK
AUX
0
10
EFX
0
10
LOW
-15
+15
HIGH
-15
+15
TRIM
PAN
1.3
2.4
ST
1
2
3
4
5
6
4
3
2
1
PFL
PEAK
AUX
0
10
EFX
0
10
LOW
-15
+15
HIGH
-15
+15
1.3
2.4
ST
7/8
4
3
2
1
PFL
PEAK
AUX
0
10
EFX
0
10
LOW
-15
+15
HIGH
-15
+15
1.3
2.4
ST
9/10
4
3
2
1
PFL
PEAK
AUX
0
10
EFX
0
10
LOW
-15
+15
HIGH
-15
+15
1.3
2.4
ST
11/12
4
3
2
1
PFL
PEAK
AUX
0
10
EFX
0
10
LOW
-15
+15
HIGH
-15
+15
BAL
1.3
2.4
ST
13/14
-16
-60
+24
-20
4
3
2
1
PFL
PEAK
AUX
0
10
EFX
0
10
LOW
-15
+15
HIGH
-15
+15
TRIM
PAN
1.3
2.4
ST
-16
-60
+24
-20
4
3
2
1
PFL
PEAK
AUX
0
10
EFX
0
10
LOW
-15
+15
HIGH
-15
+15
TRIM
PAN
1.3
2.4
ST
-16
-60
+24
-20
4
3
2
1
PFL
PEAK
AUX
0
10
EFX
0
10
LOW
-15
+15
HIGH
-15
+15
TRIM
PAN
1.3
2.4
ST
-16
-60
+24
-20
4
3
2
1
PFL
PEAK
AUX
0
10
EFX
0
10
LOW
-15
+15
HIGH
-15
+15
TRIM
PAN
1.3
2.4
ST
-16
-60
+24
-20
4
3
2
1
PFL
PEAK
AUX
0
10
EFX
0
10
LOW
-15
+15
HIGH
-15
+15
TRIM
PAN
1.3
2.4
ST
-16
-60
+24
-20
TRIM
-16
-50
+14
-20
TRIM
TRIM
-16
-50
+14
-20
TRIM
MIC
MIC
MIC
MIC
MIC
MIC
MIC
MIC
MIC
MIC
-16
-50
+14
-20
BAL
BAL
BAL
20
30
40
5
0
10
O
O
15
10
20
30
40
5
0
10
O
O
15
10
20
30
40
5
0
10
O
O
15
10
20
30
40
5
0
10
O
O
15
10
20
30
40
5
0
10
O
O
15
10
20
30
40
5
0
10
O
O
15
10
20
30
40
5
0
10
O
O
15
10
20
30
40
5
0
10
O
O
15
10
20
30
40
5
0
10
O
O
15
10
20
30
40
5
0
10
O
O
15
10
-16
-50
+14
-20
9
8
7
1
10
6
5
4
2
3
11

44
7. BALANCE CONTROL
The BALANCE knob adjust balance or the L/R position of the stereo module signal.
For example if this knob is turned all the way to the left, the signal will be sent only the stereo L and PGM
1, 3 whose assign switchs are pressed.
If this knob is turned all the way to the right, the signal will be sent only the stereo R and PGM 2, 4. If the
knob is set to the center position, the same amount of signal will be sent to the stereo L and R, and PGM
1~4.
8. PAN CONTROL
This knob adjust the stereo position of the signal between the stereo L and R, and between the PGM 1,
3/PGM 2, 4.For example if this knob is turned all the way to the left, the signal will be sent only the stereo
L and PGM 1, 3 whose assign switchs are pressed.
If this knob is turned all the way to the right, the signal will be sent only the stereo R and PGM 2, 4. If the
knob is set to the center position, the same amount of signal will be sent to the stereo L and R, and PGM
1~4.
9. ASSIGN SWITCH [ST, PGM1~4]
These switchs assign the signal of the input module to the PGM 1~4 output and the STEREO output.
10. PFL SWITCH
This switch allows you to monitor the per-fader channel input signal through headphone and monitor
output.
It is convenient to use PFL when you wish to check the sound of the input signal, or when troubleshooting
a specific channel.
11. CHANNEL FADER
This fader controls the output level of the input channel signal, determining the volume balance between
channels, The channel fader should be lowered for unused channels.

55
OUTPUT CONTROL PART
1. EFX RETURN CONTROL
The volume control the input levels from the effect device etc, connected to EFX RETURN.
2. EFX BALANCE CONTROL
This knob assigns the signal of effect return, determining the stereo of the sound.
3. ASSIGN SWITCH [EFX RETURN]
These switchs assign the signal of the EFX RETURN to the PGM 1~4 output and the STEREO output.
4. AUX SEND CONTROL
This adjusts the signal level of the AUX SEND output.
5. EFX SEND CONTROL
This adjusts the signal level of the EFX SEND output.
6. ASSIGN SWITCH [MONITOR AND HEADPHONE]
This switch allows you to monitor the signal of the output section.(ST, PGM 1~4, AUX, EFX)
7. HEADPHONE AND MONITOR CONTROL
This knob adjusts the level of monitor output and the volume of a set of headphones
connected to the headphone jack.
8. HEADPHONE JACK
Connect the headphone here.
You can monitor the following signal :
The input signal of the each input channel : When the PFL switch ON
The output signal of the master section : When the monitor assign switch ON
40
20
60
20
0
10
O
O
PGM 4
H.P/MON
0
10
HEADPHONS
40
20
60
20
0
10
O
O
4
3
2
1
ON
PGM 1
1.3
2.4
EFX RETURN
0
10
40
20
60
20
0
10
O
O
PGM 2
EFX SEND
0
10
AUX SEND
40
20
60
20
0
10
O
O
PGM 3
ON
ON
ON
3
2
1
4
AUX
EFX
STEREO
MONITOR
1
2
3
4
L
R
MON
AUDIO MIXER 4 PROGRAM
RMX-1426
POWER
ON
OFF
PHANTOM
ON
OFF
40
20
60
20
0
10
O
O
STEREO
ON
ST
ST
0
10
BAL
6
4
2
0
-2
-4
-7
-10
-15
-20
6
4
2
0
-2
-4
-7
-10
-15
-20
PFL
9
8
7
1
10
13
14
15
6
5
4
2
3
11
12

66
9. ON SWITCH
This switch turn the PGM 1~4, ST on/off.
The output signal is on when the switch is pressed in. When off, the output signal will be muted.
10. MASTER FADER CONTROL
This fader adjusts the signal level to the PGM 1~4, ST.
11. METER SELECT SWITCH
The meters are dual function LED meter that indicate signal levels as selected by the meter select switch.
When meter select switch is off : display of the STEREO L/R output
When meter select switch is on : display of the headphone or monitor output
12. METER DISPLAY SECTION
These meters indicate the output level to the PGM 1~4, and ST or monitor.
13. PFL INDICATOR
This indicator will light when a PFL switch is turned on.
14. PHANTOM POWER
This switch turns on/off the phantom power supply for all input channels.
Use this switch when you are using condenser microphones.
When this switch is turned on, DC +48V will be supplied to pin 2 and 3 of each input XLR connector. If you
do not need phantom power, be sure to leave this turned off.
It is safe to connect balanced dynamic microphones or line level devices even if this switch
is on, but connecting unbalanced devices or device whose transformers are center-grounded will cause
hum or malfunctions.
Indicator will be light when PHANTOM switch is on.
15. POWER SWITCH
The power switch is used to turn on and off the AC main power.
The indicator will light when POWER switch is ON.

77
REAR PANEL CONTROLS
1. MIC INPUT
These are XLR-type connector. (1:sleeve, 2:hot, 3:cold)
Nominal input level is -60dB(mono channel) and -50dB(stereo channel).
Phantom power(+48V) can be supplied to these jack. Phantom power is turned on/off using by the
phantom power switch.
2. LINE INPUT
These are phone jacks which input the signal for each input channel.
Nominal input level is -20dB.(tip:hot, ring:cold, sleeve:ground)
3. SUB IN
These are phone jacks which input the signal from sub mixer or other device. Nominal input level is
+4dB.
4. EFX RETURN [L/MONO, R]
These are unbalanced phone jacks.
The nominal input level and impedance is +4dB/10KΩ.
If only the L jack is used, the input signal will be mono and the same signal will be input to the R jack as
will.
5. AUX SEND
These are unbalanced phone jack with a nominal output level and impedance is +4dB/600Ω.
6. EFX SEND
These are unbalanced phone jack with a nominal output level and impedance is +4dB/600Ω.
7. INSERT I/O
These are phone jacks patched in front of the output fader.
The nominal input level and impedance is 0dB/600Ω, and the nominal output level and impedance is
6
5
4
3
2
1
7/8
9/10
EFX
AUX
4
3
2
1
FUSE
T315mAL/250V
4
3
2
11/12
13/14
EFX SEND
+4dB
R
L
R
L
MIC INPUT/BAL
LINE INPUT
MONITOR
PROGRAM OUTPUT
1
STEREO
AC INPUT
230V 50Hz, 36W
~
L/MONO
AUX SEND
+4dB
SUB INPUT
+4dB
R
+4dB
EFX RETURN
+4dB / BAL
+4dB
+4dB/BAL
0dB
INSERT
S/N
4
3
2
1
13
14
11
12
9
10
7
8
6
5
4
3
2
1
BAL
3
1
9
2
5
6 4
7
8
12
11
10

88
0dB/10KΩ.
These are unbalanced TRS jacks, with tip=out, ring=in and sleeve=ground.
8. PGM OUT 1~4
These are unbalanced phone jack which output the signal of the PGM bus.
The nominal output level impedance is +4dB/600Ω
9. STEREO OUT
These are unbalanced phone jack which output the signal of the STEREO bus.
The nominal output level impedance is +4dB/600Ω
10 . MONITOR OUT
These are unbalanced phone jack which output the signal of the MONITOR bus.
The nominal output level impedance is +4dB/600Ω
11 . FUSE HOLDER
These fuse are provided to product this unit from undesirable overload.
When fuse are blown out, these should be replaced with the same type fuse.
12 . AC POWER CORD
Plug this AC input cord into AC outlet.

99
SPECIFICATIONS
ELECTRICAL
• Rated Output
Stereo, PGM 1~4 Output...................................................................................................+4dB/600Ω, BAL
AUX, EFX Send............................................................................................................+4dB/600Ω, UNBAL
Monitor Out...................................................................................................................+4dB/600Ω, UNBAL
Headphone Out........................................................................................................................100mW/40Ω
• Input sensitivity/Impedance
Mic(CH1~CH6).................................................................................................................-60dB/600Ω, BAL
Mic(CH7~CH14)...............................................................................................................-50dB/600Ω, BAL
Line(CH1~CH6) ...............................................................................................................-20dB/10KΩ, BAL
Line(CH7~CH14)........................................................................................................-20dB/10KΩ, UNBAL
EFX Return..................................................................................................................+4dB/10KΩ, UNBAL
SUB In(PGM1~4, AUX, EFX) ......................................................................................+4dB/10KΩ, UNBAL
• T.H.D(20Hz~20KHz)............................................................................................................Less than 0.1%
• Frequency Response(+1/-2dB)...............................................................................................20Hz~20KHz
• Tone Control
High, Low(12KHz, 80Hz).................................................................................................................. 15dB
• EIN...................................................................................................................................Less than -128dB
• Buss Noise.........................................................................................................................Less than -78dB
• Crosstalk............................................................................................................................Less than -70dB
• Maximum Voltage Gain
Mic(Mono CH) to ST/PGM1~4.............................................................................................................84dB
Mic(Mono CH) to AUX..........................................................................................................................76dB
Mic(Mono CH) to EFX..........................................................................................................................86dB
Mic(Mono CH) to Monitor.....................................................................................................................70dB
Mic(St CH) to ST/PGM1~4...................................................................................................................74dB
Mic(St CH) to AUX ...............................................................................................................................66dB
Mic(St CH) to EFX................................................................................................................................76dB
Mic(St CH) to Monitor...........................................................................................................................60dB
EFX Return(St CH) to ST/PGM1~4......................................................................................................16dB
SUB In(St CH) to PGM1~4...................................................................................................................10dB
• Phantom Power ...................................................................................................................................+48V
GENERAL
• Power Source............................................................................................................AC 110V~240V, 60Hz
• Power Consumption..............................................................................................................................36W
• Weight.................................................................................................................................................7.5Kg
• Dimensions....................................................................................................482(W) 104(H) 310(D)mm
*Specifications and design subject to change without notice for improvements.

MADE IN KOREA