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DIGITAL POWER 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!

RISK OF ELECTRIC SHOCK

DO NOT OPEN 

CAutION

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.

*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. 

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.

Summary of Contents for DPA-1200S

Page 1: ...al Power Amplifier DPA 300S 600S 900S 1200S DPA 300SO 600SO 900SO 1200SO Rack mount products in the Western Hemisphere North America South America and the Caribbean do not have handles installed due t...

Page 2: ...ction 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 q...

Page 3: ...ntents Contents Unpacking 2 Installation Environment 2 Important Safety Instructions 2 Features 3 Front Panel 4 Rear Panel 5 Speaker Connection 7 Applications 8 Block Diagram 9 Specifications 13 Servi...

Page 4: ...urces 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...

Page 5: ...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 mi...

Page 6: ...LEDS indicate the amplifier s output signal levels SIG Green 10dB Green Clip Yellow PROTECT Red 3 VOLUME CONTROL Turn the volume controls clockwise to increase gain and counterclockwise to decrease g...

Page 7: ...distance or other device 4 COOLING VENTS Air flow is front to back DO NOT block front or rear air vents 5 PRIORITY INPUT AND CONTACT CLOSURE Each amplifier module has 2 audio inputs The Primary progr...

Page 8: ...0S 600S 900S 1200S DPA 300SO 600SO 900SO 1200SO 8 OUTPUT VOLTAGE SELECTOR This two position switch is used to select a output voltage 100V or 70V 9 PGM INPUT CONNECTOR Balanced 3 pin terminal block co...

Page 9: ...the rated impedance indicated Caution 1 Make sure that the total impedance does not equal or less than the rated impedance 2 Do not connects a speaker has lower impedance than rated impedance It may...

Page 10: ...DIGITAL POWER AMPLIFIER 8 DPA 300S 600S 900S 1200S DPA 300SO 600SO 900SO 1200SO Applications Applications...

Page 11: ...DIGITAL POWER AMPLIFIER 9 DPA 300S 600S 900S 1200S DPA 300SO 600SO 900SO 1200SO Block Diagram Block Diagram DPA 300S 600S...

Page 12: ...DIGITAL POWER AMPLIFIER 10 DPA 300S 600S 900S 1200S DPA 300SO 600SO 900SO 1200SO DPA 900S 1200S...

Page 13: ...C LPF 35kHz GAIN 0 3dB 100 70 Vrms PROTECTION OCP OTP CLIP RED SIG GRN 10dB GRN PFC VA VA HV HV ST BY MAIN RECTIFIER AC SMPS 100 70V SWITCH PGM PRI TOGGLE 2nd ORDER LPF FAN FAN CONTROL FAN START 65 PR...

Page 14: ...ME PRI PRI GND PRI COM 1 PRI SELECT 10dB GRN SIG GRN 4th ORDER LPF SPEAKER RELAY PROTECTION SPEAKER OUTPUT 0dB 0dB 12dB 12dB P C PGM PRI TOGGLE LPF 25kHz GAIN 0 3dB OCP OTP 100 70 Vrms CLIP RED PRI VO...

Page 15: ...0V 4 1 49V 8 70V 8 85V 8 100V 8 Input Sensitivity 1V 10k T H D Max Output Power Less than 0 1 AES17 Rated Power 1 3 Power Less than 0 03 S N 20kHz LPF More than 103dB Frequency Response 1W 3dB 50Hz 20...

Page 16: ...70V 5 4 70V 4 1 49V 8 70V 8 85V 8 100V 8 Input Sensitivity 1V 10k T H D Max Output Power Less than 0 1 AES17 Rated Power 1 3 Power Less than 0 03 S N 20kHz LPF More than 103dB Frequency Response 1W 3...

Page 17: ...DIGITAL POWER AMPLIFIER 15 DPA 300S 600S 900S 1200S DPA 300SO 600SO 900SO 1200SO DIMENSIONS DPA 300S 600S DPA 300SO 600SO 900SO 1200SO...

Page 18: ...DIGITAL POWER AMPLIFIER 16 DPA 300S 600S 900S 1200S DPA 300SO 600SO 900SO 1200SO DPA 900S 1200S 440 420 482 88...

Page 19: ...t A Parts List is available by contacting your warranty provider Variations and Options Variations and Options Variations Products supplied through legitimate sources are compatible with local AC powe...

Page 20: ...any 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 th...

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