Operation Manual
Digital Power Amplifier
DPA-300T/300Q
DPA-300TO/300QO
* Rack mount products in the Western Hemisphere(North America, South America, and the Caribbean) do not have handles installed due to customer preference.
DIGITAL POWER AMPLIFIER
Wellcome
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!
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.
WARNING
To prevent fire or shock hazard, do not expose the unit to rain or moisture.
This symbol is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
This symbol is intended to alert the user to the presence of important operation and maintenance (servicing) 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 découvert.
*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.
DIGITAL POWER AMPLIFIER
Contents |
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Unpacking ....................................................................................................................................... |
2 |
Installation |
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Environment.................................................................................................................................... |
2 |
Important Safety Instructions............................................................................................................. |
2 |
Features............................................................................................................................................ |
3 |
Front Panel ...................................................................................................................................... |
4 |
Rear Panel ....................................................................................................................................... |
5 |
Speaker Connection....................................................................................................................... |
7 |
Applications .................................................................................................................................... |
8 |
Block Diagram ................................................................................................................................ |
9 |
Specifications ................................................................................................................................ |
13 |
Service |
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Procedures.................................................................................................................................... |
17 |
Schematic ..................................................................................................................................... |
17 |
Parts List ....................................................................................................................................... |
17 |
Variations and Options ............................................................................................................... |
17 |
Warranty ....................................................................................................................................... |
17 |
DPA-300T/300Q, DPA-300TO/300QO 1
DIGITAL POWER AMPLIFIER
Unpackiing
Although your DPA-300T/300Q, DPA-300TO/300QO 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.
IInsttallllatition
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 DPA-300T/300Q, DPA-300TO/300QO
DIGITAL POWER AMPLIFIER
Feattures
-High Performance Class-D Power PA Amplifier
High performance 3CH/4CH Class-D Power amplifiers produce 300W rated power each channel. (DPA-300T/TO : 3CH, DPA-300Q/QO : 4CH)
-Emergency Power Back Up (24VDC) capability
The unit operates on a 24VDC battery power supply for emergency back up without UPS (DPA-TO/QO models are not included with Emergency Power Back Up (24VDC)).
-Rated Output Power Via DC Backup Supply
Output power can be maintained as AC power when 24VDC power supplied.
-Advanced Power Circuitry Design
The combination Class-D type amplification circuitry combined with SMPS creates a high efficiency amplifier offering reduced power consumption and low heat dissipation and weight.
-High Quality Sound Design
The total harmonic distortion is reduced to less than 0.03% THD, with a high signal to noise S/N ratio of over 103dB
-Advanced Protection Circuitry
Advanced protection circuitry guards against overheating, shorted outputs, DC output, overloads and mismatched power
-A Variety of operation Indicators
Signal, -10dB signal level, Clip, Protection and system power (AC, DC, STBY) indicators.
-Balanced Input
This connection is used to ensure the lowest noise operation which eliminates the common noise from the cable.
-Remote Power ON/OFF
The remote power allows the amplifier to be turned on or off from a distance or other device via dry contact closure.
-PRIORITY Input
PGM is interrupted and over ridden by the Priority input, when a contact closure is received on the PRI select terminal. This is Ideal for Emergency message broadcasting applications.
Accessories
Ac Power Cord x1 6P Terminal Block x2 4P Terminal Block x2
2P Terminal Block (Ac Remote power) x1
8P Terminal Block x1 Operation Manual x1
Screws for Rack mount Bracket x4
DPA-300T/300Q, DPA-300TO/300QO 3
DIGITAL POWER AMPLIFIER
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Front Panel |
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DPA 300Q DIGITAL POWER AMPLIFIER |
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CH 1 |
CH 2 |
CH 1 |
CH 1 |
1. SYSTEM POWER INDICATORS
When Power switch is on, AC or DC LED will illuminate depending on input Power source. When Power switch is off, STBY LED will illuminte.
NOTE: During operation of DC, amplifier is keep going to work even if the switch of power is turned off.
Power SW |
Power LED |
AC LED |
STBY LED |
DC LED |
SW ON |
ON |
ON |
OFF |
OFF |
AC/DC |
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SW OFF |
OFF |
OFF |
ON |
OFF |
SW ON |
ON |
ON |
OFF |
OFF |
AC only |
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SW OFF |
OFF |
OFF |
ON |
OFF |
SW ON |
ON |
OFF |
OFF |
ON |
DC only |
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SW OFF |
ON |
OFF |
OFF |
ON |
2.SIGNAL INDICATORS (CH1, CH2, CH3, CH4[DPA-300Q/QO ONLY])
The LEDS indicate the amplifier’s output signal levels.
SIG : Green, -10dB : Green, Clip : Yellow, PROTECT : Red
3.VOLUME CONTROL (CH1, CH2, CH3, CH4[DPA-300Q/QO ONLY])
Turn the volume controls clockwise to increase gain and counterclockwise to decrease gain.
4. COOLING VENTS
Air flow is front to back. DO NOT block front or rear air vents.
5. POWER SWITCH
Push on/off switch. When Power switch is on, BLUE LED will illuminate.
4 DPA-300T/300Q, DPA-300TO/300QO
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