Inter-m RMX-1426 User manual

RMX-1426
Multichannel Audio Mixer
Copyright 2004 Inter-M Corporation

RMX-1426 Multichannel Audio Mixer
Contents
Welcome ..................................................................................................................................... 3
Unpacking ......................................................................................................................................3
Warnings .........................................................................................................................................3
Operation .......................................................................................................................................5
Features ....................................................................................................................................... 6
Front Panel Controls.................................................................................................................... 7
Input Section ..................................................................................................................................7
Output Section ............................................................................................................................10
Rear Panel Controls .................................................................................................................. 12
Block Diagram .......................................................................................................................... 14
Specifications............................................................................................................................ 15
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RMX-1426 Multichannel Audio Mixer
Welcome
A personal welcome to you from the management and employees of Inter-M
Thank you for purchasing this fine Inter-M product. All of us here at Inter-M are dedicated
to providing you with the highest quality products and the best value.
We sincerely trust this product will provide you with years of satisfactory service, but if
anything is not to your complete satisfaction, we will endeavor to make things right.
Welcome to Inter-M, and thank you for becoming a part of our worldwide extended
family!
Unpacking
Although your RMX-1426 is neither complicated nor difficult to operate, we recommend
you take a few minutes to read this brief manual and familiarize yourself with the
important information regarding product features, setup and operation.
As with most electronic devices, we strongly recommend you retain the original
packaging. In the unlikely event the product must be returned for servicing, the original
packaging (or reasonable equivalent) is required.
Warnings
Environment
Never place this product in an environment that could alter its performance or reduce its
service life. Such environments are usually characterized by high levels of heat, dust,
moisture, or vibration.
Safety
1. Read these instructions carefully.
2. Follow all instructions.
3. Keep all warnings.
4. Do not operate this apparatus near water.
5. Clean only with a damp cloth.
6. Do not block any of the ventilation openings.
7. Install only in accordance with the instructions in this manual.
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RMX-1426 Multichannel Audio Mixer
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other
devices (including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding type plug. A polarized
plug has two blades, with one wider than the other. A grounding type plug has two
blades and a third grounding prong. The wide blade or the third prong is provided for
your safety. If the provided plug does not fit into your outlet, consult an electrician for
replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched, particularly at plugs,
convenience receptacles, and the point where it is attached to the apparatus.
11. Use only the attachments/accessories specified.
12. Use only with a cart, stand, tripod, bracket, or table specified, or sold with the
apparatus. When a cart is used, use caution when moving the cart/apparatus
combination to avoid overturning.
13. Unplug this apparatus during lightning storms or when unused for long periods of
time.
14. Refer all servicing to qualified service personnel. Servicing is required when the
apparatus has been damaged in any way, such as power supply cord or plug is
damaged, liquid has been spilled or objects have fallen into the apparatus, the
apparatus has been exposed to rain or moisture, does not operate normally, or
has been dropped.
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RMX-1426 Multichannel Audio Mixer
Operation
Make certain that speakers and input sources are properly connected before switching
on.
Keep volume levels at minimum gain before switching on.
NOTE: The system’s operation is delayed by approximately three seconds after pressing
the AC Mains power switch. This is due to the built-in protection circuitry, designed to
protect speakers and other system components.
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RMX-1426 Multichannel Audio Mixer
RMX-1426
Multichannel Audio Mixer
Features
Multiple Inputs and Outputs
• Six mono and four stereo input channels will accommodate a wide array of sound
sources including microphones, instruments, cassette and CD players. Four output
channels for routing flexibility.
Flexible Routing Architecture
• Four output assign switches on each input channel.
Input and Output Monitoring
• PFL function on input channels for convenient headphone monitoring, plus switches
for selectable output monitoring.
EFX and Aux Sends and EFX Returns
• For connecting external processing equipment, an EFX Send and AUX Send are
provided, as well as a stereo EFX Return.
Two-Band EQ
• Two band equalization on all input channels.
On-Board Phantom Power
• Built-in +48VDC phantom power for condenser microphones.
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RMX-1426 Multichannel Audio Mixer
Front Panel Controls
Input Section
1. Peak Indicators
These LED indicators light when the input signal to the associated channel is 3dB
below clipping. If the indicator is lit steadily, reduce the channel’s Trim level (1) to
avoid distortion.
2. Channel Gain Controls
These knobs control of gain level for the associated input channel.
3. Input Selector Switches
These switches select the input source for the associated channel.
When MIC is selected, the input source will be the rear-panel MIC (balanced XLR)
connector.
When LINE is selected, the input source will be the rear-panel LINE (balanced 1/4"
phone) connector.
4. EQ Controls
These knobs control the equalization for the associated input channel. Two bands
of equalization are provided:
Low: 80Hz, ±15dB, Shelving type
High 12kHz ±15dB, Shelving type
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RMX-1426 Multichannel Audio Mixer
5. Aux Send Controls
These knobs control the Aux Send level for the associated input channel. Rotating
the knob clockwise increases the amount of signal sent to the AUX buss. The Aux
Send is pre-fader, and is not affected by the channel’s fader position.
6. EFX Send Controls
These knobs control the EFX Send level for the associated input channel. Rotating
the knob clockwise increases the amount of signal sent to the EFX buss. The EFX
Send is post-fader, and is directly affected by the channel’s fader position.
7. Balance Controls
These knobs control the L/R balance position for the associated stereo input
channel. Depending on which output sources are selected with the channel’s
Assign Switches (9), the Balance Controls will pan the signal between Left and
Right on the stereo buss, and/or between PGM 1/3 and 2/4 on the Program
busses.
If the knob is rotated to the center, the channel’s signal will be sent equally to the
stereo Left and Right, PGM 1/2 and PGM 3/4 busses.
If the knob is rotated fully counter-clockwise (to the left), the channel’s signal will
be sent only to the stereo Left, PGM 1 and PGM 3 busses.
If the knob is rotated fully clockwise (to the right), the channel’s signal will be sent
only to the stereo Right, PGM 2 and PGM 4 busses.
8. Pan Controls
These knobs control the L/R balance position for the associated mono input
channel. Depending on which output sources are selected with the channel’s
Assign Switches (9), the Balance Controls will pan the signal between Left and
Right on the stereo buss, and/or between PGM 1/3 and 2/4 on the Program
busses.
If the knob is rotated to the center, the channel’s signal will be sent equally to the
stereo Left and Right, PGM 1/2 and PGM 3/4 busses.
If the knob is rotated fully counter-clockwise (to the left), the channel’s signal will
be sent only to the stereo Left, PGM 1 and PGM 3 busses.
If the knob is rotated fully clockwise (to the right), the channel’s signal will be sent
only to the stereo Right, PGM 2 and PGM 4 busses.
9. Channel Output Assign Switches
These buttons assign the channel’s input signal to the stereo output buss, or to the
PGM 1/2 or PGM 3/4 busses. Any combination of output busses may be chosen.
10. PFL Switches
These buttons are used to monitor each channel’s output status via the
headphone jack.
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RMX-1426 Multichannel Audio Mixer
When monitoring the channel’s input signal, PFL position allows you to hear the
input at a level unaffected by the position of the channel’s Output, FX Send and
Pan settings. AFL position will allow you to hear the input as it appears in the final
mix, with Output, FX Send and Pan settings as selected for the channel.
11. Channel Faders
These faders control the output level (the level sent to the output buss) for the
associated input channel. Faders on unused channels should be set to the
minimum setting.
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RMX-1426 Multichannel Audio Mixer
Output Section
1. EFX Return Level
This knob controls the EFX Return buss level. The EFX Return is the sum of all signals
from the EFX Sends of Channel Inputs (6).
2. EFX Return Balance
This knob controls the EFX Return balance, panning the EFX Return buss signal
within the stereo buss or PGM 1/2 and PGM 3/4 busses.
3. EFX Return Assign Switches
These switches assign the output of the EFX Return signal to any combination of
the Stereo buss, or PGM 1/2 and PGM 3/4 busses.
4. Aux Send Level
This knob controls the combined Aux Send output level.
5. EFX Send Level
This knob controls the combined EFX Send output level.
6. Monitor and Headphone Assign Switches
These buttons assign the master output signal to the stereo output buss, or to the
PGM 1/2 or PGM 3/4 busses. Any combination of output busses may be chosen.
7. Headphone and Monitor Level
This knob controls the signal monitoring level and headphone level. It is
independent from the master output level (10).
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RMX-1426 Multichannel Audio Mixer
8. Headphone Output Jack
This is a stereo output on balanced 1/4" phone jack, for monitoring the signal of
the master output buss. When the PFL switch is activated on an input channel, the
signal present at this jack is the input signal of the associated input channel.
9. Output Buss Switches
These switches switch on the output to the associated output buss. Separate
switches are provided for the main Stereo buss, PGM 1/2 and PGM 3/4 busses.
10. Master Output Fader
This fader controls the output level to the selected output busses.
11. Meter Select Switch
The Output Meters (12) are dual-function LED meters whose source is selected
with this switch.
When the Meter Select Switch is set to OFF, the meters display the Stereo L/R
output level.
When the Meter Select Switch is set to ON, the meters display the headphone or
monitor output level.
12. Output Level Meters
These 10-segment LED meters display the output level as selected by the Meter
Select Switch (11).
13. PFL Indicator LED
This LED lights when any of the Input Channel PFL switches are activated.
14. Phantom Power Switch and Indicator
Pressing this switch activates the +48VDC phantom power supply to all Input
Channels, for use with condenser mics requiring external power. When Phantom
Power is active, the LED indicator lights.
NOTE: It is safe to connect most modern dynamic microphones or line level
devices to the channel inputs when phantom power is activated. However, some
older ribbon microphones may be damaged by phantom power, and certain
unbalanced line level devices may malfunction or produce an audible hum
when phantom power is active.
15. Power Switch
This switch is used to switch the unit on and off. When the unit is on, the adjacent
Power Indicator LED is lit.
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RMX-1426 Multichannel Audio Mixer
Rear Panel Controls
1. Mic Inputs 1-14
Mic-level inputs on balanced three-pin XLR connectors.
Channels 1-6 are provided at nominal input level of –60dB (mono).
Channels 7-10 are provided at nominal input level of –50dB (stereo).
2. Line Inputs 1-14
Line-level inputs.
Channels 1-6 are provided on balanced 1/4" phone connectors.
Channels 7-14 are provided on unbalanced RCA connectors.
3. Sub Inputs 1-6
Line-level inputs on unbalanced 1/4" phone connectors. These are provided for
input of signal from a sub-mixer or other external device.
4. EFX Return (L/MONO, R)
Line-level inputs on unbalanced 1/4" phone connectors. These are provided as
stereo inputs. If only the L jack is used, the input signal will be seen as mono and
sent equally to both L and R channels of the master buss.
5. Aux Send
Line-level outputs on unbalanced 1/4" phone connectors. These are provided for
connection to an external processor or other line-level input.
6. EFX Send
Line-level outputs on unbalanced 1/4" phone connectors. These are provided for
connection to an external processor or other line-level input.
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RMX-1426 Multichannel Audio Mixer
7. Insert I/O
These unbalanced 1/4" TRS jacks are provided for input and output of an audio
source before the master fader. The Insert signal is unaffected by the Channel
Input levels.
8. PGM Outputs 1-4
Line-level outputs on unbalanced 1/4" phone connectors. These are provided for
output of signal routed to the PGM output busses.
9. Stereo Outputs L/R
Line-level outputs on unbalanced 1/4" phone connectors. These are provided for
output of signal routed to the Stereo L/R output busses.
10. Monitor Outputs
Line-level outputs on unbalanced 1/4" phone connectors. These are provided for
output of signal routed to the Monitor output busses.
11. AC Fuse Holder
This holder contains the AC overload protection fuse. If the fuse has blown out,
replace it with a fuse of the same type and rating. If the fuse continues to blow,
refer servicing to a qualified service technician.
12. AC Connector
Plug this cable into an active AC power supply.
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RMX-1426 Multichannel Audio Mixer
Block Diagram
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RMX-1426 Multichannel Audio Mixer
Specifications
ELECTRICAL
Input Sensitivity/Impedance
Mic Input 1-6 -60dB/600Balanced
Mic Input 7-14 -50dB/600Balanced
Line Input 1-6 -20dB/10kBalanced
Line Inputs 7-14 -20dB/10kUnbalanced
EFX Returns +4dB/10kUnbalanced
Sub Inputs (PGM 1-4, Aux, EFX) +4dB/10kUnbalanced
Output/Impedance
Stereo, PGM 1-4 Output +4dB/600Balanced
AUX, EFX Send +4dB/600Unbalanced
Monitor Output +4dB/600Unbalanced
Headphone Output 100mW/40k
Frequency Response (+1/-2dB) 20Hz-30kHz
T.H.D (20Hz – 20kHz) Lessthan0.1%
Equalization
High ±15db, 12kHz
Low ±15db, 80Hz
Buss Noise Less than –78dB
EIN Less than –128dB
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
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RMX-1426 Multichannel Audio Mixer
GENERAL
PowerSource 100 –240VAC, 50/60Hz
Power Consumption 36W
Weight 735 Kg (16.5 lbs)
Dimensions 482(W) x 104(H) x 310(D) mm
19(W) x 4(H) x 12.2(D) in.
Specifications and design subject to change without notice for improvements.
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RMX-1426 Multichannel Audio Mixer
Inter-M, Ltd. (Korea) began operations in 1983.
Since then, Inter-M has grown to become one of the largest manufacturers
of professional audio and commercial sound electronics equipment in the world.
Inter-M has gained worldwide recognition for its own branded products,
as well as private label manufacturing of electronics sold under other names (OEM).
The company is no longer just a Korean company, but rather a global company
that is truly international in scope, with factories and offices in Korea and China,
and sales and marketing operations located in Japan, Europe, and the U.S.A.
With more than 850 employees around the globe, Inter-M is well-poised for further growth and
expansion.
INTER-M AMERICAS, INC.
1 EAST BEACON LIGHT LANE, CHESTER, PA, USA 19013-4409
TEL: [phone], FAX: [phone]
Home Page:http://www.inter-m.net, E-mail: [email protected]
INTER-M Corporation
SEOUL OFFICE: 653-5 BANGHAK-DONG, DOBONG-KU, SEOUL, KOREA
TEL: [phone]~8, FAX: [phone]
Home Page:http://www.inter-m.com, E-mail: [email protected]
0704RMX1426 PRINTED IN KOREA
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