Inter-m MA-103 User manual

Operation Manual
Digital Amplifier
MA-103
MA-103_MANUAL_141392_FOR.qxp_레이아웃 1 2017. 3. 16. 오후 2:21 페이지 표1

DIGITAL AMPLI IER
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!
ISK OF ELECT IC SHOCK
DO NOT OPEN
CAUTION
CAUTION: TO EDUCE THE ISK OF ELECT IC SHOCK.
DO NOT EMOVE COVE (O BACK).
NO USE -SE VICEABLE PA TS INSIDE.
EFE SE VICING TO QUALIFIED SE VICE PE SONNEL.
ATTENTION : ISQUE DE CHOC ELECT IQUE
NE PAS QUV I
WARNING
To prevent fire or shock hazard, do not
expose the unit to rain or moisture.
*WA NING FO YOU P OTECTION PLEASE EAD THE FOLLOWING-WATE AND MOISTU E: 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 WI ING (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 ules. 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 intended to alert the user to the pres-
ence of uninsulated “dangerous voltage” within the
product’s enclosure that may be of sufficient magni-
tude to constitute a risk of electric shock to persons.
This symbol is intended to alert the user to the pres-
ence of important operation and maintenance (ser-
vicing) 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 dé-
couvert.
Pour deconnecter completement l’appareil du reseau d’al-
imentation. deconnecter le cordon d’alimentation de la
prise murale.
La prise du reseau d’alimentation doit demeurer aisement
accessible.
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DIGITAL AMPLI IER
1
MA-103
Contents
Contents
Unpacking....................................................................................................................................... 2
Installation
Environment....................................................................................................................................2
Important Safety Instructions.............................................................................................................2
Features........................................................................................................................................... 3
Package and accessory includes.................................................................................................3
peration........................................................................................................................................ 3
Front Panel...................................................................................................................................... 4
Rear Panel....................................................................................................................................... 5
Applications.................................................................................................................................... 8
Block Diagram.............................................................................................................................. 10
Specifications................................................................................................................................ 11
Service
Procedures....................................................................................................................................13
Schematic.....................................................................................................................................13
Parts List....................................................................................................................................... 13
Variations and ptions............................................................................................................... 13
Warranty....................................................................................................................................... 13
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DIGITAL AMPLI IER
2MA-103
Installation
Unpacking
Unpacking
Although your MA-103 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
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.
IMP RTANT SAFETY INSTRUCTI NS
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. ollow 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 appa-
ratus. 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 appa-
ratus 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
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DIGITAL AMPLI IER
3
MA-103
Features
Features
- C MPACT 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 30W, High reliability, Low weight
and Low temperature.
- SUPPLY P WER BY SMPS
Take up SMPS (Switching Mode Power Supply) for Low electric power and Low weight.
- VARI US INPUT & ADDITI NAL FUNCTI NS
Configured 3 channel inputs and various reception of inputs are available by 3.5mm 3P EURO input, 6.3Φ&
3.5ΦPhone Jack, RCA cable.
More convenient use via TEL-IN and Priority function.
- T NE C NTR L FUNCTI N
Separate Bass(300Hz) and Treble(10kHz) controls to tailor your sound. Easy to control the tone due to user
frequency which is including bass and treble.
- PRI RITY BR ADCAST FUNCTI N
Adopted the Priority broadcast function that can control other input signal by TEL IN & INPUT 1 input signal.
(TEL IN >> INPUT 1 >> INPUT 2 = INPUT 3)
peration
peration
1. Before you plug the power cord to AC outlet, please set the power switch O , 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. (AC 100-240V)
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.
Package and accessory includes
Package and accessory includes
1. Euro terminal block (3.5mm pitch) 3P x 2EA
2. Euro terminal block (5.08mm pitch) 7P x 1EA
3. User manual x 1EA
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DIGITAL AMPLI IER
4MA-103
Front Panel
Front Panel
1. P WER SWITCH
This switch turns the power on and off. Green LED is on when the amplifier is active and powered.
2. LED INDICATES ACTIVE STATUS F AMPLIFIER PR TECTI N NETW RK
LED indicates the operation status of protection network inside of equipment. Once the protection circuit
is operated, LED is turned on and the output is blocked.
3. MASTER V LUME C NTR L
Control equipment that control overall volume of audio signals adjusted by each input audio volume con-
trol equipment. Clockwise turning will increase the audio volume.
4. T NE C NTR L
These control the bass(300Hz) and treble(10kHz) of the main output signal by ±10dB.
5. AUX 3.5ΦPH NE JACK INPUT TERMINAL
The unbalance input terminal to connect with external devices capable to connect with devices such as
mobile phones, MP3 etc.
6. INPUT V LUME C NTR L
The input volume control by which volume can be adjusted fit to each channel of INPUT 1, 2, 3.
POWER
INPUT1 INPUT2 INPUT3 AUX BASS TREBLE
VOLUME
PROTECT
MA 103
MIXING AMPLIFIER
6
5 2
43 1
3.5mm
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DIGITAL AMPLI IER
5
MA-103
Rear Panel
Rear Panel
1. SPEAKER UTPUT TERMINAL
This is the terminal for speakers. 8, 70V(166), 100V(333) cannot be used at the same time. It may
cause overload and malfunction.
※Connecting Speakers
Before connecting speakers to MA-103 unit, be sure to disconnect the AC power cable.
LINE LINE
HIGH LOW
IMPEDANCE
8
1 2 8 7 4
9 6 3 5
8
8Ω
8Ω SPEAKER 사용 시
HIGH LOW
IMPEDANCE
or100V TERMINAL
or 8 TERMINAL
or 70V TERMINAL
8
HIGH LOW
IMPEDANCE
8
HIGH LOW
IMPEDANCE
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DIGITAL AMPLI IER
6MA-103
※NOTE: 1. Make certain that the total impedance is not less than the rated impedance indicated. (LOW-
8, 70V-166, 100V-333)
2. Please make sure not to use 8, 70V, 100V terminals simultaneously.
3. Upon using 100V(333),70V(166), please set impedance selection switch to HIGH, and for
8  speaker, set impedance selection switch to LOW.
※No sound is output upon the impedance selection switch is not set properly, thus please be careful
upon install or using it.
2. IMPEDANCE SELECTI N SWITCH
This is LOW impedance or HIGH impedance selection switch. In case to use 8Ω speaker select LOW,
and for 166Ω or 333Ω speaker, please select HIGH. (there will be no speaker output if the setting is not
proper)
3. INPUT 1 MIC INPUT TERMINAL (6.3Φ, PH NE JACK, BALANCED)
Phone Jack terminal that inputs Mic signal to INPUT 1.
<6.3Φ, Phone Jack>
4. INPUT 1 TERMINAL (3P EUR )
This is the balance input terminal of INPUT 1. It can use Mic and line input.
<EURO Terminal>
(Balanced Cable)
Use 3.5mm 3P Euro terminal.
5. LINE / MIC INPUT TERMINAL & INPUT SELECTI N SWITCH (INPUT 1)
Switch for selecting Mic and line signal input. The usage of input terminal differs from respective input
selection switch.
- LINE: Use for line input.
- MIC: Use for ordinary Dynamic or 6.3ΦPhone Jack mic input.
6.3mm
LINE LINE
H
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DIGITAL AMPLI IER
7
MA-103
6. INPUT 2 TERMINAL (3P EUR )
Balance input terminal of INPUT 2. Mic and line input can be used.
<EURO Terminal>
(Balanced Cable)
Use 3.5mm 3P Euro terminal.
7. LINE / MIC INPUT TERMINAL & INPUT SELECTI N SWITCH (INPUT 2)
Switch for selecting Mic and line signal input. The usage of input terminal differs from respective input
selection switch.
-LINE: Use for LINE input
-MIC : Use for ordinary Dynamic MIC input
8. INPUT 3 (RCA INPUT)
The unbalance input terminal that connects external devices. It can be connected source devices such as
computer, CD, DVD etc.
(Unbalanced Cable)
Use stereo audio pin cable.
‘Y’ cable is needed when connecting to computers.
(Unbalanced Cable)
Use stereo audio pin Y.
9. TEL IN TERMINAL
This is the audio signal input terminal of the Switch Board. Once a signal is input to terminal the output
of other input signal is to be reduced in accordance with priority, and TEL IN input signal is to be output.
(TEL IN >> INPUT 1 >> INPUT 2 = INPUT 3)
LINE LINE
H
3.5ø
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DIGITAL AMPLI IER
8MA-103
LINE LINE
HIGH LOW
IMPEDANCE
8
PC
or
PHONE
8
SPEAKER
CD PLAYER
POWER
INPUT1 INPUT2 INPUT3 AUX BASS TREBLE
VOLUME
PROTECT
MA 103
MIXING AMPLIFIER
TELEPHONE
INTERFACE MIC
MIC
MIC
Using LOW IMPEDANCE SPEAKER
Applications
Applications
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DIGITAL AMPLI IER
9
MA-103
LINE LINE
HIGH LOW
IMPEDANCE
8
PC
or
PHONE
100V/333
SPEAKER
70V/166
SPEAKER
CD PLAYER
TELEPHONE
INTERFACE MIC
MIC
MIC
POWER
INPUT1 INPUT2 INPUT3 AUX BASS TREBLE
VOLUME
PROTECT
MA 103
MIXING AMPLIFIER
Using HIGH IMPEDANCE SPEAKER
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DIGITAL AMPLI IER
10 MA-103
MIC1/AUX1TEL INMUTE(6.3φ)gain selectorgain selectorPROTECT LEDSELECTORIMPEDENCEMUTE(3.54φ)-15dBu/2kΩPHONE JACK HATEL IN0dBu/5kΩ COMG-+-15dBu/2kΩ-60dBu/2kΩMIC1/AUX1LIMITERBABPF±8dBSABAHAHAHAPOWER LED-60dBu/2kΩMIC1G-+MASTER VOLVOL 3VOL 2VOL 1G-+PA-15dBu/20kΩAUX-15dBu/2kΩ-60dBu/2kΩMIC2/AUX2POWER S/WAC INPUTTONE CONTROLCOM8ohm70V100VSMPS+26VSLVTRTS FUSE
Block Diagram
Block Diagram
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DIGITAL AMPLI IER
11
MA-103
Specifications
Specifications
※Design and specification are subject to be changed for the improvement of product
quality without pre notice.
MA - 103
Rated Output Power 30W
Speaker Output Power / Impedance 15.5V/8Ω, 70V/166Ω, 100V/333Ω
Input Sensitivity
/ Impedance
MIC (BALANCE) -60dBu/2kΩ
LINE (BALANCE) -15dBu/2kΩ
RCA (UNBALANCE) -15dBu/20kΩ
3.5ΦPHONE JACK (UNBALANCED) -15dBu/2kΩ
TEL IN 0dBu/5kΩ
LOW IMPEDANCE (8Ω) LINE,RCA,TEL IN
requency Response (1W,±3dB) 200Hz ~ 18kHz
LOW IMPEDANCE (8Ω)
MIC requency Response (1W,±3dB) 200Hz ~ 13kHz
T.H.D - 1/3Pwr Less than 0.5%
S/N
MIC Better than 55dB
LINE, TEL IN, Better than 75dB
RCA, 3.5ΦPHONE JACK Better than 75dB
Tone Control BASS(300Hz) ±10dB
TREBLE (10kHz) ±10dB
Operating Temperature -10℃~ +40℃
Power Source AC 100 ~ 240V, 50/60Hz
Power Consumption 10.5W(1/8W)
Weight (SET) 1.5kg/3.3lb
Dimensions (SET) 210(W) x 44(H) x 180(D)mm/
8.27(W) x 1.73(H) x 7.09(D)in
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DIGITAL AMPLI IER
12 MA-103
※DIMENSI NS
210
209.6
44 180
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DIGITAL AMPLI IER
13
MA-103
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.
Variations and ptions
Variations and ptions
Variations
Products supplied through legitimate sources are compatible with local AC power requirements.
ptions
No optional items are available for this product.
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.
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MADE IN KOREA
February 2017 141392
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.
5666 CORPORATE AVE. CYPRESS, CA 90630
TEL : [phone], AX : [phone]
Home Page : http://www.inter-m.net, E-mail : [email protected]
Inter-M Corporation
SEOUL O ICE : 719, DOBONG-RO, DOBONG-GU, SEOUL, KOREA
TEL : [phone]~8, AX : [phone]
Home Page : http://www.inter-m.com, E-mail : [email protected]
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