Inter-M MA-212U User Manual
Operation Manual
Public Address Amplifier
MA-206U/212U/224U
PUBLIC ADDRESS 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 int ended to ale rt 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.
*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.
*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.
*
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 product’s enclosur e that ma y be of sufficient
magnitude to constitute a risk of electric shock to
persons.
This symbol is int ended to ale rt 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 inséré es à fond sans en lai sser aucune par tie à
découvert.
PUBLIC ADDRESS AMPLIFIER
Contents
Contents
Unpacking .......................................................................................................................................2
Installation
Environment....................................................................................................................................2
Important Safety Instructions.............................................................................................................2
Features............................................................................................................................................3
Accessories.....................................................................................................................................3
Operation ........................................................................................................................................3
Front Panel ......................................................................................................................................4
Rear Panel .......................................................................................................................................7
Connecting Speakers.....................................................................................................................9
Applications ..................................................................................................................................10
Block Diagram ..............................................................................................................................11
Specifications ................................................................................................................................12
Service
Procedures....................................................................................................................................14
Schematic.....................................................................................................................................14
Parts List .......................................................................................................................................14
Variations and Options ...............................................................................................................14
Warranty .......................................................................................................................................14
MA-206U/212U/224U
1
UBLIC ADDRESS AMPLIFIER
S3125A
P
Unpacking
Unpacking
Although your MA-206U/212U/224U 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
MA-206U/212U/224U
Features
Features
- A PUBLIC ADDRESS AMPLIFIER WITH RATED OUTPUT OF 60W/120W/240W
TAKE UP THE DIGITAL AMPLIFIER CIRCUIT WITH HIGH EFFICIENCY OF THE RATED
POWER 60W/120W/240W, 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 1~6.
- INPUT SIGNAL LEDS
EASY TO CHECK THE INPUTTED SIGNAL TO INPUT 1~6.
- 5 BAND GRAPHIC EQUALIZER
THIS SYSTEM IS PROVIDED THE 5 BANDS EQUALIZER.
YOU CAN CONTROL THE TONE EACH FREQUENCY BY USING THEM.
PUBLIC ADDRESS AMPLIFIER
- SPEAKER SELECTOR
6 SPEAKER SELECTOR SWITCHES ARE PROVIDED TO ENABLE YOU TO SELECT 5 SPEAKERS INDIVIDUALLY
OR TOTALLY.
- ANNOUNCEMENT CHIME AND SIREN
- VCA(VOLTAGE CONTROLLED AMPLIFIER)
- EXT MUTE, EXT CHIME AND TEL IN FUNCTION
- 10-DOT LED LEVEL METER
- USB-MP3 PLAYER & LCD DISPLAY FUNCTION
( MP3, WAV, WMA FILE FORMAT SUPPORT)
Accessories
One detachable AC power cord and Φ3.5mm audio cable are provided for use with this product.
Operation
Operation
1. Do not connect the AC power until step 4.
The AC mains POWER switch should be in the OFF position.
2. Adjust the MASTER and all INPUT 1~6 volume controls of the MIN position (turn counterclockwise).
3. Adjust the graphic equalizer so that all slides are set to the 0dB position.
4. Connect the OUTPUTS to the speaker load according to the mode of operation determined in
the previous step.
5. Depress the AC mains POWER switch to the ON position. The POWER ON indicator will illuminate.
6. The product is ready for operation, Slowly increase the LEVEL control to the desired operating level.
Avoid illuminating the PEAK indicator and do not apply too much power to the speakers.
MA-206U/212U/224U
3
UBLIC ADDRESS AMPLIFIER
13 12
123
11
5 6 7 84
10 9
P
Front Panel
Front Panel
1. INPUT 1~6 VOLUME
These knobs provide continuous control of the volume of INPUT 1~6.
※ Volumes of USB-MP3 and AUX can be adjusted through input 6 Volume.
2. INPUT SIGNAL LED
The SIGNAL LED is lighting by input signal of each channel.
3. MASTER VOLUME
This knob provides continuous control of the overall volume of amplifier's output signal.
4. PROTECTION INDICATOR
This LED indicates the state of the amplifier's protection circuitry and MUTE function.
When the protection LED is on (illuminated), the protection circuitry is active, indicating that the unit
is not operating normally.
5. CHIME SWITCH / LED
Pressing this switch will activates the four-tone chime circuitry.
6. SIREN SWITCH / LED
Pressing this switch will activates the siren circuitry.
Pressing it a second will gradually lower the siren signal, turning it off completely after apprximately 2.5 seconds
7. GRAPHIC EQUALIZER
Each slider controls the cut (decreased gain) or boost (increased gain) for its associated frequency band.
The middle position indicates flat response (no cut or boost).
Moving the slider upwards increases that frequency's gain, while moving it down decreases the level
of that frequency.
8. POWER SWITCH (PUSH TYPE)
Pressing the power switch turns the unit on. Pressing it again turns off.
※ This switch makes up that one pole be cut off when power is off.
4
MA-206U/212U/224U
Loading...