Inter-m MA-110, MA-110N Operation Manuals

Operation Manual

Digital Amplifier

MA-110/110N

DIGITAL AMPLIFIER

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

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.

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK.

DO NOT REMOVE COVER (OR BACK).

O USER-SERVICEABLE PARTS INSIDE.

N

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

ATTENTION : RISQUE DE CHOC ELECTRIQUE

NE PAS QUVRIR

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.

*CLASS 2 WIRING (Adjacent to speaker terminal): The speaker output of this apparatus can exceed 10 Watts and could be a shock injury.

Connection to speakers should be performed by a skilled person.
*Do not install this equipment in a confined space such as a book case or similar unit.
*Warning : To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture and objects filled with liquids, such as vases,

should not be placed on this apparatus.
*This apparatus shall be connected to a mains socket outlet with a protective earthing connection.

To completely disconnect this apparatus from the AC mains, disconnect the power supply cord plug from the AC receptacle.

*
*

The mains plug of the power supply cord shall remain readily 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.

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.
Pour deco nnecter comp let ement l ’appareil du reseau
d’alimentation. deconnecter le cordon d’alimentation de la
prise murale.
La prise du reseau d’alimentation doit demeurer aisement
accessible.

DIGITAL AMPLIFIER

Contents

Contents

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

Installation

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

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

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

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

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

Rear Panel .......................................................................................................................................5

Connecting Speakers.....................................................................................................................7

Applications ....................................................................................................................................8

Block Diagram ..............................................................................................................................12

Specifications ................................................................................................................................14

Service

Procedures....................................................................................................................................16

Schematic.....................................................................................................................................16

Parts List .......................................................................................................................................16

Variations and Options ...............................................................................................................16

Warranty .......................................................................................................................................16

MA-110/110N

1

DIGITAL AMPLIFIER

S3125A

Unpacking

Unpacking

Although your MA-110/110N 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

MA-110/110N

2

DIGITAL AMPLIFIER

Features

Features

Features

- COMPACT DESIGN

Easy to install and operate with compact design of 1U size and functions.

- DIGITAL AMPLIFIER CIRCUIT

Take up the Digital Amplifier Circuit with High efficiency of the rated power 100W, High reliability, Low weight
and Low temperature.

- SUPPLY POWER BY SMPS

Take up SMPS (Switching Mode Power Supply) for Low electric power and Low weight.

- VARIOUS INPUT CONTROL FUNCTION

Control the each input channel level using the sound control volume of INPUT 1~3.

- INPUT SIGNAL LEDS

Easy to check the inputted signal to INPUT 1~3.

- TONE CONTROL FUNCTION

Separate Bass(100Hz) and Treble(10kHz) controls to tailor your sound.
Easy to control the tone due to user frequency which is including bass and treble.

- ADDITIONAL FUNCTIONS

Easy to use with the various additional functions including power of phantom MIC, TEL IN.

- PRIORITY MUTING

Adopted the priority muting function which control the other input signal, by TEL IN and INPUT 1 signal and
external MUTE.

- EXTERNAL MUTE FUNCTION

Be able to use external mute when you want to cut off the unit’s output signal from the external equipment.

Operation

Operation

1. Before you plug the power cord to AC outlet, please set the power switch OFF, Tone Control center, and

volume level minimum.

2. Please make sure the speakers and input jacks are properly connected before turn the power switch on.

3. Be sure the AC power is correct voltage before you plug into the power cord.

4. Please push the power switch, then the power input LED is on and the unit will be operated.

5. Please use your own with adjustment the volume using each input volume and master volume, the tone using

the tone control.

MA-110/110N

3

DIGITAL AMPLIFIER

Front Panel

Front Panel

1. MIC INPUT JACK FOR INPUT 1 (6.3ø Phone Jack, Balanced)

This is a 6.3ø jack on the front channel that is very useful for connecting dynamic microphone. When
microphone plugged to the jack, it overrides all the input signals.

2. INPUT SIGNAL LED

These green LEDs flash when signal is present and the input level control to input 1~3 is turned up.

3. INPUT VOLUME

These adjust the Mixing level of input signal of 1~3.

4. TONE CONTROL

These control the bass(100Hz) and treble(10kHz) of the main output signal by ±10dB.

5. MASTER VOLUME

This controls the main output level.

6. POWER SWITCH

This switch turns the power on and off.

7. POWER LED

This LED is on when the amplifier is active and powered.

MA-110/110N

4

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IGITAL AMPLIFIER

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SPEAKER

MIC

AUX

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Rear Panel

MA-110

MA-110N

DIGITAL AMPLIFIER

1. INPUT 1 TERMINAL

This terminal is for microphone. When connecting to balanced signal, be sure to use balanced cable and
please refer to the following picture when using unbalanced cable.

XLR JACK

※ Locate “Phantom microphone” switch to MIC when using unbalanced cable.

MA-110/110N

5