Majorcom DPS-240S, DPS-360S, DPS-720S, DPS-480S User Manual

USER
MANUAL

DPS-240S/360S/480S/720S

Manual to download in PDF format on

www.majorcom.fr

2

Welcome

Welcome

DPS-240S/360S/480S/720S DPS-240S/360S/480S/720S

3

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 intended to alert 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.

ATTENTION : RISQUE DE CHOC ELECTRIQUE

NE PAS QUVRIR

WARNING

To prevent fire or shock hazard, do not
expose the unit to rain or moisture.

Caution: To prevent electric shock do not use this (polarized) plug with

Attentions: Pour prévenir les chocs électriques ne pas utiliser cette

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.

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 fond sans en laisser aucune partie à
découvert.
Pour deconnecter completement 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.

Contents

Contents

Unpacking .......................................................................................................................................4

Installation

Environment....................................................................................................................................4

Important Safety Instructions.............................................................................................................4

Features ...........................................................................................................................................5

Contents and Accessories .............................................................................................................5

Front Panel ......................................................................................................................................6

Rear Panel .......................................................................................................................................8

Applications ...................................................................................................................................11

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

Specifications ................................................................................................................................13

Service

Procedures....................................................................................................................................15

Schematic.....................................................................................................................................15

Parts List .......................................................................................................................................15

Variations and Options...............................................................................................................15

Warranty .......................................................................................................................................15

*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.

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4

Unpacking

Unpacking

Although your PN-106/112/224/236/248/260 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

DPS-240S/360S/480S/720S DPS-240S/360S/480S/720S

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.

Features

Features

- HIGH-POWERED, HIGH-CAPACITY 1-CHANNEL CLASS-D POWER AMPLIFIER

High-Power, high performance Class-D Professional Amplifier has up to 240W/360W/480W/720W 1CH
power output.
* DPS-240S: 240W, DPS-360S: 360W, DPS-480S: 480W, DPS-720S: 720W

- EMERGENCY POWER BACK UP (DC 24V) CAPABILITY

The unit operates on a DC 24V battery power supply for emergency back up without UPS.

- SMPS (SWITCHING MODE POWER SUPPLY) POWER SCHEME

High efficient, light weight SMPS power system is utilized.

- RATED OUTPUT POWER VIA DC BACKUP SUPPLY

Output power can be maintained as AC power when DC 24V power supplied.

- POWERFUL AND DETAILED SOUND QUALITY

High S/N ratio and Low THD reproduces powerful and detailed sound.

- COMPLETE PROTECTION CIRCUITS

Complete circuit protection is activated in case of amplifier overheating, output shorting, overload, over power
and DC output.

5

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

- OPERATION INDICATOR LED

LED display to check the operating status (AC, STBY, DC, POWER, SIG, -10dB, CLIP, PRT)

- 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 Priority input
terminal. This is Ideal for Emergency message broadcasting applications.

Contents and Accessories

Contents and Accessories

1. AC power cord x 1EA

2. 3P Terminal Block x 1EA

3. 2P Terminal Block (AC Remote power) x 1EA

4. 8P Terminal Block x 1EA

5. Screw for Rack Mount x 4EA

6. Washer x 4EA

7. Operation manual x 1EA

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6

DPS-240S/360S/480S/720S DPS-240S/360S/480S/720S

7

Front Panel

Front Panel

1. AC, STBY, DC LED

When Power switch is on, AC or DC LED will illuminate depending on input Power source. When Power
switch is off, STBY LED will turned on. During operation of DC, amplifier is keep going to work even if the
switch of power is turned off.

4. AIR VENTS

The air circulation passage to prevent overheating of the device, please do not obstruct the flow as air flows
from front to back.

5. POWER SWITCH

Push on/off switch. When Power switch is on, BLUE LED will illuminate.

720S

STBYAC DC

MAX

VOL

MIN

POWER

Power SW Power LED AC LED STBY LED DC LED

SW ON ON ON OFF OFF

AC/DC

SW OFF OFF OFF ON OFF

SW ON ON ON OFF OFF

AC only

SW OFF OFF OFF ON OFF

SW ON ON OFF OFF ON

DC only

SW OFF ON OFF OFF ON

2. OUTPUT LEVEL INDICATOR (1CH, 2CH, 3CH, 4CH)

Indicator display of unit’s output level status.
SIG(-30dB) LED: Green, -10dB LED: Green, CLIP LED: Orange, PRT LED: Red

※ Note: If CLIP LED is lit, sound output is distorted. Reduce the volume level.
※ Note: For the DPS-720S, if the protection circuit is activated and PRT LED is turned on, turn off the power

and turn it on again.

3. VOLUME CONTROL

Volume adjustments are made. Turn clockwise to increase the volume level.

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8

984321

657

G

INPUT

}

DPS-240S/360S/480S/720S DPS-240S/360S/480S/720S

9

Rear Panel

Rear Panel

1. AC INPUT

Connect the power cable which is supplied with the unit. Do not bend, pull, twist, heat and cut by force. It
may cause electric shock.

AC POWER

REMOTE

OUTPUT

N.C

6. PRIORITY VOLUME CONTROL

It is a volume control of PRIORITY INPUT signal. This control can adjust PRIORITY INPUT signal used as
emergency broadcasting. Turn clockwise to turn the signal level and counterclockwise to lower the signal
level.
※ It is mainly for priority broadcasting so, don’t make the VOLUME level too low.

7. OUTPUT TERMINAL

PRIORITY

PRIORITY

VOLUME

SW INPUT

+

-

G1

N.C

COM

MIN MAX

CH 1

OUTPUT

PGM INPUT

VOLTAGE

+

-

G

70V100V

Speaker Output Terminal. Before connecting speakers to the unit, be sure to disconnect the AC power cable.
Make certain that the total impedance is not less than the rated impedance indicated.

OUTPUT

CH 1

N.C

....

10W 10W 10W 10W

2. DC INPUT

This is emergency DC terminal (DC 24V). When something happens to AC power, DC power automatically
operates. Input provides power to the device regardless of power switch.
※ Please check voltage and +, - polarity.

3. AC POWER REMOTE

This terminal allows the amplifier to be turned on or off from a distance or other device.

4. AIR VENTS

Air circulation vents to prevent the device from overheating. Please be careful not to block the front/back of
the vents.

5. PRIORITY INPUT AND CONTACT CLOSURE

Each amplifier module has 2 audio inputs. The PGM input and PRIORITY input. PGM input 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. Please refer to the following picture about the suitable
cables.

PRIORITY

SW INPUT

N.C

COM

+

-

G1

­+

COM
1

SW

}

※ Caution:

1. Make sure that the total impedance does not equal or less than the rated impedance.

Speaker Output Speaker Impedance

240W

360W

480W

720W

100V / 41.7Ω

70V / 20.4Ω

100V / 27.8Ω

70V / 13.6Ω

100V / 20.8Ω

70V / 10.2Ω

100V / 13.9Ω

70V / 6.8Ω

2. Do not connects a speaker has lower impedance than rated impedance, it may cause the problem to unit.

3. Do not put the speaker cable close to input signal cable.

8. OUTPUT VOLTAGE SELECTOR SWITCH

This two-position switch is used to select a output voltage. (100V / 70V)

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10

+

DPS-S SERIES

SPEAKER

DPS-240S/360S/480S/720S DPS-240S/360S/480S/720S

9. PGM INPUT TERMINAL

Terminal block connector accepts the source input. Please refer to the following picture about the suitable
cables.

PGM INPUT

+

-

G

G

-

Applications

Applications

11

IMX-416

AC POWER

REMOTE

PRIORITY SOURCE

DRY CONTACT

OUTPUT

CH 1

N.C

PRIORITY

SW INPUT

N.C

OUTPUT

VOLTAGE

PRIORITY

VOLUME

+

-

G1

COM

MIN MAX

PGM INPUT

+

-

G

70V100V

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DPS-240S/360S/480S/720S DPS-240S/360S/480S/720S

13

Block Diagram

Block Diagram

DPS-240S/360S/480S DPS-720S

100/70 Vrms

SPEAKER OUTP UT

2nd ORDER LPF

+HV

PWM

Specifications

Specifications

DPS-240S DPS-360S DPS-480S DPS-720S

Rated Output Power 240W 360W 480W 720W

100/70 Vrms

SPEAKER OUTP UT

Output Level/Impedance

100V/41.7Ω 100V/27.8Ω 100V/20.8Ω 100V/13.9Ω

70V/20.4Ω 70V/13.6Ω 70V/10.2Ω 70V/6.8Ω

Input Sensitivity 1V/10kΩ

-HV

+HV

-VA

+VA

MAIN

ST-B Y

PFC

SMPS

DC-DC

RECTIFIER

DC

AC

-HV

SPEAKER RELAY

OCP, OTP

PROTECTION

4th ORDER LPF

+HV

-HV

-HV

+HV

-VA

+VA

THD (AES17, 1/8 Power) Less than 0.5%

S/N (20kHz LPF) Better than 100dB

MAIN

ST-B Y

SMPS

DC-DC

RECTIFIER

DC

AC

Frequency Response (1W, ±3dB) 60Hz~20kHz

Operating Temperature

-10℃~40℃

Power Source AC 120V, 60Hz, 220-240V, 50/60Hz, DC 24V

Power Consumption 130W 250W

Weight (Set) 6.9kg/15.2lb 7.9kg/17.4lb

PROTECT M ORE THAN 85℃

FAN START 65℃

FAN CONTROL

TEMPERATURE DETECTION

FAN

OCP, OTP

PROTECTION

PWM

PROTECT M ORE THAN 85℃

FAN START 65℃

FAN CONTROL

TEMPERATURE DETECTION

FAN

Dimensions (Set)

* Design and specification are subject to be changed for the improvement of product quality without pre notice.

482(W) × 88(H) × 371(D)mm

18.9(W) x 3.4(H) x 14.6(D)in

482(W) × 88(H) × 424(D)mm

18.9(W) x 3.4(H) x 16.7(D)in

GAIN=0/-3dB

LPF 35kHz

+12dB

100V/70V SWITCH

SIG(GRN)

CLIP(YEL)

-10dB(GRN)

PGM/PRI TOGGLE

+12dB

PGM VOLUME

0dB

GND

PGM-

PGM+

PGM INPUT

0dB

PRI VOLUM E

P/C

1

COM

GND

PRI-

PRI+

PRI

PRI SELECT

GAIN=0/-3dB

HPF 60Hz

LPF 35kHz

+12dB

100V/70V SWITCH

SIG(GRN)

CLIP(YEL)

-10dB(GRN)

PGM/PRI TOGGLE

+12dB

PGM VOLUME

0dB

GND

PGM-

PGM+

PGM INPUT

0dB

PRI VOLUM E

P/C

1

COM

GND

PRI-

PRI+

PRI

PRI SELECT

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DPS-240S/360S/480S/720S DPS-240S/360S/480S/720S

15

※ DIMENSIONS

DPS-240S/360S/480S

440

482

371

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

405

A Schematic is available by contacting your warranty provider.

Parts List

A Parts List is available by contacting your warranty provider.

Variations and Options

Variations and Options

88

DPS-720S

440

482

424

Variations

Products supplied through legitimate sources are compatible with local AC power requirements.

Options

No optional items are available for this product.

Warranty

458

88

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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DPS-240S/360S/480S/720S

User manual V1.1

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