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Operation Manual
DIGITAL MULTI AMPLIFIER
DPA-5075M
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DIGITAL MULTI 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.
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DIGITAL MULTI AMPLIFIER
Contents
Contents
Unpacking .......................................................................................................................................2
Installation
Environment....................................................................................................................................2
Important Safety Instructions.............................................................................................................2
Features............................................................................................................................................3
Cautions for the installation of Rack...........................................................................................4
Front Panel ......................................................................................................................................5
Rear Panel .......................................................................................................................................7
Volume Range Setting ...................................................................................................................9
Signal Mapping Function............................................................................................................10
Output Bridge Function ...............................................................................................................11
Connecting Speakers...................................................................................................................12
Communication Between DPA-5075M, And DPA-5075M and PC.......................................13
Applications ..................................................................................................................................14
Block Diagram ..............................................................................................................................15
Specifications ................................................................................................................................16
Dimensions ...................................................................................................................................17
Service............................................................................................................................................18
Variations and Options ...............................................................................................................18
Warranty .......................................................................................................................................18
DPA-5075M
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DIGITAL MULTI AMPLIFIER
Unpacking
Unpacking
Although your DPA-5075M 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 to 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.
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DPA-5075M
S3125A
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Features
Features
Features
- Module type Amplifier
- 4+1 channel, Spare-Amplifier switch function
- Low power consumption and low heat generation with Digital Amplifier and SMPS
(Switching Mode Power Spply)
- Independent power (SMPS) design for each module.
- AC 120V, 220~240V 50/60 Hz and DC 24V
- HPF (High Pass Filter) : 65Hz / 400Hz (-3dB)
- Signal mapping function.
DIGITAL MULTI AMPLIFIER
- Output bridge function.
- Input signal and status display LED for each module
- Status link communication between DPA-5075M (RS-422).
- DPA-5075M status-check functions from PC (RS-232).
- Protection circuit for over-heating, over-current and speaker short circuit.
- Socket contact point protection circuit
- Balance input.
- Volume level setup function (internal): -12dB (factory setup) / -∞
DPA-5075M
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DIGITAL MULTI AMPLIFIER
Cautions for the installation of Rack
Cautions for the installation of Rack
Following cautions should be kept when installing this device into the rack.
1. Proper ventilation inside of rack is required. Open the rear panel of rack or install the fan.
2. In case of installing several Amplifiers, install the blank panel in every five Amplifiers for proper air
ventilation.
3. Blank panel included in the DPA-5075M should be installed in the unused module among sets.
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DPA-5075M
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Front Panel
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Front Panel
DIGITAL MULTI AMPLIFIER
1. POWER SWITCH
When turning on the switch, blue light on power LED will be on, and this device is ready to operate.
However, Main power switch on the rear panel should be on.
※ When detaching the DM-75, it is recommended that turn off the DM-75 module Power Switch.
2. POWER LED
When turning on the module Power Switch, Power LED will be on, and when turning off the power switch,
LED will be off.
3. SIGNAL OUTPUT LEVEL INDICATOR
It is the indicator that displays the output level
-30 dB : Green
Clip : Yellow
※ CAUTION : DO NOT use this device when LED is on.
Reduce the signal output.
4. PROTECTION CIRCUIT INDICATOR
It is the protection circuit status indicator LED for error such as over-heating, over-current, speaker short
circuit, etc.
5. VENT
It is the air path to reduce the temperature of device. Do not block the vent. Clean the vent regularly not to
be clogged due to dust, etc.
※ Blank panel included in the DPA-5075M should be installed in the unused module among sets.
DPA-5075M
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DIGITAL MULTI AMPLIFIER
6. SPARE MODULE
n case of error in the module being used, it will be switched to the spare module automatically so that
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broadcasting can be continued.
EX1) Normal Motion
(Normal) (Normal) (Normal) (Normal) (Stand-by)
EX2) Switch to Spare in case of No.1 Amplifier Error
(Failed) (Normal) (Normal) (Normal) (Switch to spare)
EX3) Switch to Spare in Case of No.2 Amplifier after No.1 Amp is failed.
(Failed) (Failed) (Normal) (Normal) (Switch to spare)
※ In case more than one Amplifiers are Failed, First error Amplifier switch to the Spare module.
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DPA-5075M
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Rear Panel
1
678 9 10 1211
23 45
4
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4321
133.3Ω 133.3Ω 133.3Ω 133.3Ω
(100V) (100V) (100V) (100V)
Rear Panel
DIGITAL MULTI AMPLIFIER
1. SPEAKER TERMINAL
It is the speaker output terminal.
※ CAUTION : Total impedances of speaker connected per one channel should be higher than rated
impedance(100V : 133.3Ω, 70V : 65.3Ω).
2. RS-422 LINK IN/OUT TERMINAL
It is the terminal that transmits the status between devices when using more than two devices, and maximum
200ea can be connected.
3. RS-232 TERMINAL
It is the RS-232 terminal communicating with PC when using the monitoring program.
4. VOLUME ADJUSTER
It is the volume that adjusts the signal input level.
5. INPUT TERMINAL
It is the signal input terminal.
Balance input, + (signal plus), -(signal minus), GND(ground).
6. POWER INPUT TERMINAL
It is the power code connecting terminal.
DPA-5075M
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DIGITAL MULTI AMPLIFIER
. MAIN POWER SWITCH
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It is the MAIN SET power ON /OFF switch.
8. DC TERMINAL
It is the spare battery (24VDC) connecting terminal. In case of blackout of AC power, back-up battery will
supply the power.
9. FAN
It is the fan used to decrease the device inside temperature. Caution not to block the air vent of fan. Clean the
vent regularly not to be clogged due to dust, etc.
10. ID SETUP SWITCH
It is the switch that sets up the ID of each device when broadcasting. Refer to (page 13) for detail information.
11. HIGH PASS FILTER SWITCH
If selecting 400Hz for high pass filter switch, high pass filter will be operated with 400Hz / -3dB.
If selecting 65Hz for high pass filter switch, high pass filter will be operated with 65Hz / -3dB.
※ CAUTION : when using the horn speaker, high pass filter switch should be selected to 400Hz. If not,
speaker connected may fail.
12. SIGNAL MAPPING SWITCH
It is the switch that converts the input signal to desire output, and refer to (page 10) for detail information.
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DPA-5075M
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DIGITAL MULTI AMPLIFIER
VR Board
VR Board
Volume Range Setting
Volume Range Setting
Volume can be adjusted to 0dB~-12dB or 0dB~Minimum ranges using volume adjustment level jumper in the
device.
1. Volume Adjustment Range: 0dB~-12dB (Factory Setting)
When you want to change the volume adjustment range to 0dB~-12dB, connect the jumper connector of
CN351, CN352, CN353, and CN354 to No.2~3.
2. Volume Adjustment Range: 0dB~Minimum
When you want to change the volume adjustment range to 0dB~minimum, connect the jumper connector of
CN351, CN352, CN353, and CN354 to No.1~2.
DPA-5075M
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DIGITAL MULTI AMPLIFIER
Signal Mapping Function
Signal Mapping Function
You can change the input signal to desire outputs.
Please select the desire input to corresponding output.
EX1) No. 1 input->No. 1 output, No. 2 input->No. 2 output, No. 3 input-> No.3 output, No. 4 input-> No. 4
output (Factory Setting)
EX2) No. 1 input -> No. 1 and 2 output, No. 2 input -> No. 3 and 4 output
※ CAUTION : Overlapping setup of signal mapping switch is unavailable.
(X) (O)
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DPA-5075M
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Output Bridge Function
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4321
133.3Ω 133.3Ω 133.3Ω 133.3Ω
(
100V) (100V) (100V) (100V)
H
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C
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4321
133.3Ω 133.3Ω 133.3Ω 133.3Ω
(100V) (100V) (100V) (100V)
Output Bridge Function
Maximum 300W can be used as the bridge by using output bridge function.
When using the bridge, please unify the input of amp to be bridged into one input.
EX1) Setup for using input No. 1/ 300W output
After setting up the signal mapping switch to No.1input in all channel, bridge all channel.
1) Signal mapping switch
2) Method to set up the output terminal bridge
DIGITAL MULTI AMPLIFIER
300W(100V : 33.3Ω / 70V: 16.3Ω)
EX2) Method to set up for using input No.1/ 150W output, input No.2/ 150W output
Set up the signal mapping switch of channel No.1 and 2 to No.1 input, and signal mapping switch of
channel No.3 and 4 to No.2 input, and then bridge the output No.1 and 2, and then bridge the output
No.3 and 4.
1) Signal mapping switch
2) Method for output terminal bridge
150W(100V : 66.6Ω / 70V: 32.6Ω)
150W(100V : 66.6Ω / 70V: 32.6Ω)
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DIGITAL MULTI AMPLIFIER
1
0W 10W
....
1
0W 10W
H
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4321
133.3Ω 133.3Ω 133.3Ω 133.3Ω
(100V) (100V) (100V) (100V)
Connecting Speakers
Connecting Speakers
- Installation of Speaker
When you connect the speaker, after separating the power code from the socket, connect the speakers
according to speaker type and connecting method to the rear panel.
Installation of High Impedance Speaker
- If High Impedance speaker is connected to each zone in parallel, up to 75W of speaker output for
each channel can be used.
※ CAUTION : 1. Do not excess total 75W for speakers connected in each channel.
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DPA-5075M
2. Do not connect the speaker with low impedance, such as 4Ω, 8Ω.
It may cause the failure of device.
3. Do not put speaker output cables together with signal input cables.
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DIGITAL MULTI AMPLIFIER
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H
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321
4321
133.3Ω 133.3Ω 133.3Ω 133.3Ω
(100V) (100V) (100V) (100V)
4
H
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C
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D
321
4321
133.3Ω 133.3Ω 133.3Ω 133.3Ω
(100V) (100V) (100V) (100V)
4
H
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C
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D
321
4321
133.3Ω 133.3Ω 133.3Ω 133.3Ω
(100V) (100V) (100V) (100V)
4
H
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D
321
4321
133.3Ω 133.3Ω 133.3Ω 133.3Ω
(100V) (100V) (100V) (100V)
LINK IN
LINK IN LINK OUT
LINK IN LINK OUT
Communication Between DPA-5075M, And DPA-5075M and PC
Communication Between DPA-5075M, And DPA-5075M and PC
DPA-5075M can link communicate up to 200 devices by using RS-422 DIRECT CABLE.
1) Setup the device ID
ID can be setup by using 8-pin address setting located on the rear panel as follows.
ID can setup up to ( 1 (MASTER) ~ 200 ). ID is decided as exponential of 2.
Ex)In case of setting by MASTER device Ex) In case of setting by No. 15 device
2) Amplifier status check function (RS-232).
DPA-5075M can monitor the operation and error status of devices by using RS-232 serial communication.
2-1) Connecting PC to DPA-5075M
Connect between RS-232 terminal on the rear panel of DPA-5075M and RS-232 terminal of PC
2-2) Connecting between DPA-5075M
EX) Multiply-connected method
DPA-5075M
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DIGITAL MULTI AMPLIFIER
Applications
Applications
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DPA-5075M
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Block Diagram
Block Diagram
DIGITAL MULTI AMPLIFIER
DPA-5075M
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DIGITAL MULTI AMPLIFIER
Specifications
Specifications
DPA-5075M
Rated Output
(1KHz, THD 1% (AES17))
Speak Out / Impedance 70V / 65.3 Ω, 100V / 133.3 Ω
Input Seneitivity 1V / 10KΩ Balance
THD (AES17)
Rated Output (75W, 1kHz) Less than 1 %
1/3 Rated Output (25W, 1kHz) Less than 0.1%
Signal to Noise Ratio (20kHz LPF, A-WTD) More than 90 dB
High Frequency Characteristics (1W,0dB+1/-3dB)
Low Frequency Characteristics (1W,-3dB±2dB)
Select 65Hz High Pass Filter 65 Hz
Select 400Hz High Pass Filter 400 Hz
Operating Temperature -10°C ~ +40°C
Power Source AC120V, 220–240V, 50/60Hz, DC24V
Power Consumption (1/8 Prated) DPA-5075M+DM-75 5EA : 130W
Weight MAIN SET + AMP MODULE 2EA 10.8 Kg/24lb
100V : more than 20kHz / 70V : more than 18kHz
DPA-5075M+DM-75 2EA : 50W
MAIN SET + AMP MODULE 5EA 16.5 Kg/36.4lb
75W x 4 Chnnel
Dimensions
* Specifications and design subject to change without notice.
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DPA-5075M
AMP MODULE 1.9 Kg/4.2lb
482(W) x 88(H) x 420(D)mm
19(W) x 3.4(H) x 16.5(D)in
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※ DIMENSIONS
DIGITAL MULTI AMPLIFIER
DPA-5075M
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DIGITAL MULTI AMPLIFIER
Service
Service
Procedures
Take steps to insure the problem is not related to operator error or other products within the system. 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.
Variations and Options
Variations and Options
Variations
Variations of this product exist to reflect the variations in AC power requirements throughout the world. Product
supplied through local sources are compatible with local AC power requirements.
Options
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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DPA-5075M
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NOTE
MA-106
DPA-430H
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NOTE
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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 : +1-562-921-0313, FAX : +1-562-921-0370
Home Page : http://www.inter-m.net, E-mail : info@inter-m.net
Inter-M Corporation
Seoul OFFICE:653-5 BANGHAK-DONG, DOBONG-KU, SEOUL, KOREA
TEL : +82-2-2289-8140~8, FAX : +82-2-2289-8149
Home Page : http://www.inter-m.com, E-mail : overseas@inter-m.com
MADE IN KOREA
June 2011 128213
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