Inter-m LM-6414 Operation Manual

Operation Manual

Mic Line Mixer

LM-6414

* Rack mount products in the Western Hemisphere(North America, South America, and the Caribbean)

do not have handles installed due to customer preference.

MIC LINE MIXER

Welcome

Welcome

A personal welcome to you from the management and employees of Inter-M

All of the co-workers here at Inter-M are dedicated to providing excellent products with inherently good value,
and we are delighted you have purchased one of our products.

We sincerely trust this product will provide 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 part of our worldwide extended family!

This symbol is intend ed to aler t the user to the

Caution

RISK OF ELECTRIC SHOCK

DO NOT OPEN

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.

Caution: To prevent electric shock do not use this (polarized) plug with

Attentions: Pour prévenir les chocs électriques ne pas utiliser cette

WaRninG

To prevent fire or shock hazard, do not
expose the unit to rain or moisture.

*WARNING FOR YOUR PROTECTION PLEASE READ THE FOLLOWING-WATER AND MOISTURE: Unit should not be used near water(e.g.

near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, etc). Care should be taken so than objects do

not fall and liquids are not spilled into the enclosure through openings.
*Do not install this equipment in a confined space such as a book case or similar unit.
*This apparatus shall not be exposed to dripping or splashing and no objects filled with liquids, such vases, shall be placed on the apparatus.
*This apparatus shall be connected to a mains socket outlet with a protective earthing connection.

It has heed to be easy to disconnect the device. To disconnect the device from power, separate AC input cable from inlet or unplug the AC Cord.

*
*

The socket-outlet shall be installed near the equipment and shall be easily accessible.

Caution

*These servicing instructions are for use by qualified service personnel only. To reduce the risk of electric shock, do not perform any servicing

other than that contained in the operating instructions unless you are qualified to do so.

notE
*This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are

designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment

generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful

interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will

be required to correct the interference at his own expense.

presence of uninsulated “dangerous voltage” within
the prod uct’s enclos ure t hat m ay be of suffi cient
magnitude to constitute a risk of electric shock to
persons.

This symbol is intend ed to aler t the user to the
presence of important operation and maintenance
(servicing) instructions in the literature accompanying
the appliance.

an extension cord, receptacle or other outlet unless the blades
can be fully inserted to prevent blade exposure.

fiche polarisée avec un prolongateur, une prise de courant
on une autre sortie de courant, sauf si les lames peuvent
étre insérées à fon d sa ns en laisser auc une par tie à
découvert.

MIC LINE MIXER

Contents

Contents

Unpacking .......................................................................................................................................2

Installation

Environment....................................................................................................................................2

Important Safety Instructions.............................................................................................................2

Features............................................................................................................................................3

Operation ........................................................................................................................................3

Front Panel ......................................................................................................................................4

Rear Panel .......................................................................................................................................7

Applications ....................................................................................................................................9

Block Diagram ..............................................................................................................................10

Specifications ................................................................................................................................11

Service

Procedures....................................................................................................................................13

Schematic.....................................................................................................................................13

Parts List .......................................................................................................................................13

Warranty .......................................................................................................................................13

LM-6414

1

MIC LINE MIXER

S3125A

Unpacking

Unpacking

Although your LM-6414 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.

Installation

Installation

Environment

Never place this product in an environment which could alter its performance or reduce its service life. Such
environments usually include high levels of heat, dust, moisture, and vibration.

IMPORTANT SAFETY INSTRUCTIONS

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with dry cloth.

7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (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 are 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 they exit from the apparatus.

11. Only use attachments/accessories specified by the manufacturer.

12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus.
When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

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.

S3125A

2

LM-6414

MIC LINE MIXER

Features

Features

- MULTIPLE INPUTS AND OUTPUTS

Fourteen channel inputs including six mono and four stereo channels to accommodate a wide array of sound
sources including microphones, instruments and CD players. Four channel outputs plus stereo output for complete
routing flexibility.

- THREE-BAND EQ

Three-band equalization on all input channels for maximum control of audio mix.

- FULL-FEATURED INPUT CHANNELS

Trim control, peak indicators and constant-level pan controls on each channel.

- INPUT AND OUTPUT MONITORING

PFL function on input channels for convenient headphone monitoring, plus switches for selectable output
monitoring.

- LED OUTPUT DISPLAY

Output display is switchable between four output busses, stereo bus, PFL or monitor level.

- ON-BOARD PHANTOM POWER

Built-in +48VDC phantom power for condenser microphones

- AC/DC OPERATION

Operates on AC or DC power for true portability.

- ACCESSORIES

One detachable AC power cord is provided for use with this product.

Operation

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.

LM-6414

3

MIC LINE MIXER

Front Panel

Front Panel

1. PHANTOM POWER INDICATOR

This LED indicator lights when phantom power is active at the microphone inputs.

2. PFL INDICATOR LED

This LED lights when any of the Input Channel PFL switches are activated.

3. PHANTOM POWER SWITCH

Pressing this switch activates the +48VDC phantom power supply to all Input Channels, for use with
condenser mics requiring external power.

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.

4. OUTPUT LEVEL METERS

These multi-segment LED meters display the output level as selected by the Output Monitor Selector Switch (17)(23).

5. CHANNEL OUTPUT ASSIGN SWITCHES

These buttons assign the channel’s input signal to the stereo output bus, or to the Bus 1/2 or Bus 3/4
outputs. Any combination of output busses may be chosen.

6. POWER SWITCH

This switch is used to switch the unit on and off.
When the unit is on, the Power Indicator LED (20) is lit.

4

LM-6414

MIC LINE MIXER

7. PEAK INDICATORS

hese LED indicators light when the input signal to the associated channel is 3dB below clipping. If the

T
indicator is lit steadily, reduce the channel’s Trim level (8) to avoid distortion.

8. CHANNEL TRIM (GAIN) CONTROLS

These knobs control the input level for the associated input channel.

9. EQ AND AUX SEND CONTROLS

These knobs control the equalization for the associated input channel. Three bands of equalization are
provided:
Low: 100Hz, ±15dB, Shelving type
Mid: 1kHz, ±15dB, Shelving type
High: 10kHz ±15dB, Shelving type
Below the EQ Controls are Aux 1 and Aux 2 Send Controls. These knobs control the amount of signal sent to
the Aux busses.

10. PAN CONTROLS

These knobs control the L/R balance position for the associated input channel. Depending on which output
sources are selected with the channel’s Assign Switches (5), the Pan Controls will adjust the signal between
Left and Right on the stereo bus, and/or between Bus 1/3 and 2/4 on the Output busses 1-4
If the knob is rotated to the center, the channel’s signal will be sent equally to the stereo Left and Right, Bus
1/2 and Bus 3/4 outputs.
If the knob is rotated fully counter-clockwise (to the left), the channel’s signal will be sent only to the s tereo
Left, Bus 1 and Bus 3 outputs.
If the knob is rotated fully clockwise (to the right), the channel’s signal will be sent only to the stereo Right,
Bus 2 and Bus 4 outputs.

11. PFL SWITCHES

These buttons are used to monitor each channel’s output status via the headphone jack.
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.

12. CHANNEL OUTPUT LEVELS

These knobs control the output level (the level sent to the output bus) for the associated input channel. Levels
of unused channels should be set to the minimum setting.

13. BUS 1 AND 3 MASTER FADERS

These faders adjust the output level of signals routed to Bus 1 and Bus 3.

14. BUS 2 AND 4 MASTER FADERS

These faders adjust the output level of signals routed to Bus 2 and Bus 4.

15. STEREO MASTER FADER

This fader adjusts the output level of signals routed to the Master Bus.

LM-6414

5

MIC LINE MIXER

16. CUE SWITCHES

hese buttons are used to select the associated output bus as active, sending signals routed to that bus to the

T
rear-panel output connector.

17. OUTPUT MONITOR SELECTOR

These buttons are used to select the output source for monitoring and headphones output.

18. HEADPHONE OUTPUT

This is a balanced 1/4” stereo jack for connection of headphones for monitoring the outputs of the busses as
selected by the Output Monitor Selector (17), or to monitor input channels where PFL switches (11) are
selected.

19. HEADPHONE GAIN

This knob controls the output level of the headphone jack.

20. POWER INDICATOR

This LED is lit when the power is switched on to the unit.

21. AUX1/2 RETURN GAIN CONTROLLER

This is a gain controller for the returned signal of AUX1/2 RETURN from external device such as reverb
processor.

22. AUX1/2 RETURN PAN CONTROLLER

This is a PAN level controller for the returned signal of AUX1/2 RETURN from external device such as reverb
processor.

23. OUTPUT LEVEL DISPLAY SELECTOR

ON : STEREO L/R, PFL, MON, Level
OFF : BUS 1, 2, 3, 4

24. AUX1/2 SEND GAIN CONTROLLER

These are gain controller for each input channel audio to send AUX1/2 SEND for external device such as
effector.

6

LM-6414

Rear Panel

Rear Panel

MIC LINE MIXER

1. AC INPUT POWER

Connect a standard three-pin AC cable to this connector. As shown in the illustration below, if you are
connecting a 110-120VAC power source, remove the fuse over (1) and change the voltage selector tap (2)
from the 230V to 115V setting.

2. 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, as shown below.

Voltage 100VAC-120VAC 230VAC-240VAC

Fuse Rating 0.5A/250A 0.3A/250V

If the fuse continues to blow, refer servicing to a qualified service technician.

3. LINE INPUTS 7-14

Line-level inputs on unbalanced 1/4” phone and RCA connectors. These are provided for input of signal
from line-level sources such as keyboards, guitar preamps, tuner, cassette or CD players, or line outputs
from an external mixer.

4. MIC INPUTS 1-6

Mic-level inputs on balanced three-pin XLR connectors.

LM-6414

7

MIC LINE MIXER

5. STEREO CHANNEL INSERT I/O

hese unbalanced 1/4” TRS jacks are provided for input and output of an external processor on the

T
individual stereo channel. The Insert signal is unaffected by the Channel Input levels.

6. STEREO OUTPUTS L/R

Line-level outputs on balanced 1/4” phone connectors. These are provided for output of signal routed to the
Stereo L/R output busses.

7. MONITOR OUTPUTS

Line-level outputs on balanced 1/4” phone connectors. These are provided for output of signal routed to the
Monitor output busses.

8. BUS OUTPUTS 1-4

Line-level outputs on balanced 1/4” phone connectors. These are provided for output of signal routed to the
Bus 1-4 output busses.

9. DC INPUT TERMINALS

These terminals are provided for the connection of DC battery power. Connect a 24VDC battery source to
these terminals. Make certain the red terminal is connected to the battery’s positive (+) side, and the black
terminal to the battery’s negative (–) side.

10. EFX SEND AND RETURN

Line-level inputs on unbalanced 1/4” phone connectors. These are provided for the connection of external
effects processors on the master buss.

11. CHANNEL INSERT I/O

These unbalanced 1/4” TRS jacks are provided for input and output of an external processor on the
individual channel. The Insert signal is unaffected by the Channel Input levels.

12. LINE INPUTS 1-6

Line-level inputs on balanced 1/4” phone connectors.

8

LM-6414

Applications

TU

COUNTER

RESET

AB

LRdB

2

R

ECMEMORELAYBLANK DUBBING

NORHIGHPLAYSKIP

063

LEVEL

11

PHONES

POWER

ON

OFF

d

D

ECK BDECKA

MINM

AX

R

EC LEVEL

MINM

AX

OUTPUT LEVEL

DUBBINGNOR HIGH

ONEPONEP

AMS AMS AMS AMS

;<-:-7,7=*4-+);;-<<-,-+3

PC

6335

SKIP/B RECPAUSE

REC
MUTE

R/PLAYMEMO

MODE

DECKA

AUTO REVERSE

PLAY LOGIC DECK

DECK B

AUTO REVERSE

RECORDING PLAY LOGIC DECK

TUNER

CDP

DECK

Applications

MIC LINE MIXER

LM-6414

9

MIC LINE MIXER

Block Diagram

Block Diagram

10

LM-6414

Specifications

Specifications

MIC LINE MIXER

LM-6414

Input Sensitivity/Impedance

Maximum Voltage Gin

Output/Impedance

Frequency
Response (+1/-2dB)

T.H.D
(20Hz - 20kHz)

Mic Input -60dB/600Ω Balanced

Line Input -30dB/47kΩ Balanced

Mic Bus 1~4, ST Out 84dBm

Mic to Monitor 74dBm (PFL: 64dBm)

Mic to AUX 84dBm

Line to Bus 1~4, ST Out 54dBm

Line to Monitor 44dBm (PFL: 34dBm)

Line to AUX 44dBm

Stereo, Bus 1-4 Output +4dB/600Ω Balanced

Monitor Output +4dB/600Ω Balanced

Headphone Output 1.0V/33kΩ before clipping

20Hz~30kHz

Less than 0.05%

High ±12dB, 10kHz

Equalization

Phantom Power +24VDC

Power Source

Power Consumption 25W

Weight 7.5kg/16.5lb

Dimensions 482(W) x 177(H) x280(D) mm/19(W) x 6.7(H) x 11(D) in

* Specifications and design are subject to change without notice.

(Supplied AC mains transformer depends on country requirements)

Mid ±12dB, 1kHz

Low ±12dB, 100Hz

100–120VAC or 220–240VAC; 50/60Hz, 24VDC

LM-6414

11

MIC LINE MIXER

4

40

482

280

1

77

DIMENSIONS

12

LM-6414

MIC LINE MIXER

Service

Service

Procedures

Take steps to insure the problem is not related to operator error or other products within the system. Information
provided in the troubleshooting portion of this manual may help with this process. Once it is certain that the
problem is related to the product contact your warranty provider as described in the warranty section of this
manual.

Schematic

A Schematic is available by contacting your warranty provider.

Parts List

A Parts List is available by contacting your warranty provider.

Warranty

Warranty

Warranty terms and conditions vary by country and may not be the same for all products. Terms and conditions
of warranty for a given product may be determined first by locating the appropriate country which the product
was purchased in, then by locating the product type.

To obtain specific warranty information and available service locations contact Inter-M directly or the
authorized Inter-M Distributor for your specific country or region.

LM-6414

13

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.

13875 ARTESIA BLVD. CERRITOS, CA 90703 USA
TEL : [phone], FAX : [phone]
Home Page : http://www.inter-m.net, E-mail : [e-mail]

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 : [e-mail]

MaDE in KoREa

July 2013 133293