Dynacord DPA 4120 Utilization, Installation, Amplifier has to be protected from, Mains operation

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1.Utilization

The amplifiers DPA 4120 and DPA 4140 are specially designed for the power-consistent and reliable operation of PA-systems. The DPA 4120 and DPA 4140 are intended to be used in company intercom, alarm and background music transmission installations, offices and commercial areas, congregation and sport centers, schools, churches, hotels, hospitals, shopping malls and super markets, cruise ships, and other similar applications.

2.Installation

When installing the amplifiers, it is important to assure that for ventilation reasons the front-to-rear air circulation is guaranteed (for details on 19"-case or 19“-rack shelf installation please refer to paragraph 9).

To maintain EMC it is necessary that all input, output, and control lines – except for the power cords – are shielded. Within metal housings or closed rack shelf systems, unshielded output and control cabling is allowable. Shielding is accomplished by connecting the individual cable screens to the enclosure or rack shelf ground potential.

The amplifier has to be protected from:

-water drops or splashes

-direct sunlight

-high ambient temperatures and the direct radiation of heat sources

-high humidity and moisture

-heavy dust

-massive vibrations

Moving the amplifier from a cold into a warm environment can result in the occurrence of condensation on inner parts. Operating the appliance is only permissible after it has accommodated to the altered temperature (approximately after one hour).

Should it happen that foreign solid parts or liquids inadvertently intrude the enclosure, unplug the device from the power source and have it checked by a DYNACORD service center, before using it again.

Cleaning the appliance should not be performed using chemical solvents or sprays, as this might damage the finish and moreover could cause hazard fire.

3.Before the first operation

These power amplifiers are designed to be operated with different input modules. The general input module NRS 90225 is meant for all conventional applications. It allows to remotely start the amplifiers via control lines, monitor their operation by use of the incorporated fault relay, and monitor the transmitted audio signals through the monitor output. Using the remote control module NRS 90222, the amplifiers are connected to the PROMATRIX manager DPM 4000 via RS-485 remote interface providing complete remote operation and surveillance. The desired input module has to be inserted into the module shaft on the rear of the power amplifier. It has to be tightened using the two locking screws (B) (refer also to the paragraphs 8.1 and 8.2).

3.1Mains operation

For normal AC mains operation, the included mains cord has to be connected to a 230V or 115V 50/60Hz wall outlet. On the appliance itself, the cord has to be connected to the 3-pole mains socket (10).

Caution The appliance is factory preset to 230V AC. Switching to 115V AC is accomplished using the voltage selector (12).

DPA 4120: For 115V AC operation, the mains fuse (11) has to be replaced by a slow blowing

4ampere type, labeled "T4A" (see also paragraph 11.1).

DPA 4140: For 115V AC operation, the mains fuse (11) has to be replaced by a slow blowing

8ampere type, labeled "T8A" (see also paragraph 11.2).

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Contents Leistungsmerkmale Power Amplifier DPA 4120 / DPA+7,*6,&+5+,76+,1,6 DPA Anzeigen, Bedienungselemente und AnschlüsseInhaltsverzeichnis Vor der Inbetriebnahme InstallationshinweiseVerwendung Der Verstärker ist zu schützen vorEingang Input Batteriebetrieb 24V DCAusgänge Leistungsausgang Power Output Anzeigen STANDBY-Anzeige Leistungsausgang Power Output für niederohmige LautsprecherSteueranschluß Remote Control nur NRS Kontrollausgang MonitorGround Fault Anzeige Protect AnzeigeAussteuerungskontrolle und CLIP-Anzeige Remote Modul NRS Der Einbau ist wie folgt vorzunehmen siehe Bild 6 bzw. Bild Input Transformer NRS Output Transformer NRS Der Einbau ist wie folgt vorzunehmen siehe Bild 8 bzw. Bild Pilotton & Erdschluß Überwachung NRSPilotton-Überwachung Erdschluß-ÜberwachungNRS 90 406 S 411 Prüfung der Funktion Pilotton-Überwachung Sicherungen Sicherungen in DPA Groundlift Schalter Circuit a to Chassis SwitchPrüfung der Funktion Erdschluß-Überwachung Einbau in 19-Gehäuse oder 19-Gestellschränke503 F Page Page Eigenschaften des Monitor-Ausgangs BatteriebetriebEigenschaften des Eingangs Eigenschaften des Leistungs-AusgangsNachrüstsätze für DPA 4120 und DPA Erdschluß Überwachung Performance Features 03257$176$7,16758&7,216 12 a Indicators, controls and connectionsContents Before the first operation InstallationUtilization Amplifier has to be protected fromInput Battery operation 24V DCSingle Call and obligatory reception relays Override Bypass Power Output for 100V 70V or 50V loudspeaker systemsPower Output for low impedance loudspeaker systems OutputsProtect indicator Remote Control connector only NRSIndicators Standby indicator Ready indicatorLevel meter and Clip indicator Remote module NRS Enhanced application field Standard input module NRSNRS 90208 input transformer for the floating, balanced input Input Transformer NRS Output Transformer NRS NRS 90224 pilot tone & ground fault surveillance Ground fault surveillancePilot tone surveillance NRS 90 406 S 411 Checking the pilot tone surveillance function Fuses Fuses in the DPA Checking the ground fault surveillance functionCase and 19-rack-shelf system installation Ground lift switch Circuit a to Chassis Switch503 F 503 F 601 602 Features of the input nominal input level Battery operationExtension kits for the DPA 4120 and DPA DPA 4140 power amplifier 400 W power supply Mains operationNRS 90208 input transformer for floating, balanced input Caractéristiques techniques Amplificateur DE Puissance DPA 4120 / DPA16758&7,2166e&85,7e,03257$176 Témoins, contrôles et connexions NRS 90225 module dentrée général Fonctionnement sur le secteur UtilisationLamplificateur doit être protégé contre Avant la première utilisationInput Entrée Fonctionnement sur batterie 24V DCSorties Câblage LF pour le couplage de deux amplificateurs DPATémoin Ready Connecteur Remote Control NRS 90225 uniquementSortie Monitor Témoins Témoin StandbyVumètre et témoin Clip Témoin Ground FaultChamps dapplications avancées Module dentrée standard NRS Module de télécommande NRSPage Input Transformer NRS Output Transformer NRS Surveillance de défaut de masse Surveillance de la fréquence piloteNRS 90 406 S 411 NRS 90 406 S 411 Installation en rack 19 et en armoire rack Commutateur de mise à la masse Circuit a to Chassis SwitchFusibles Fusibles du DPA 503 F 503 F 601 602 Caractéristiques de la sortie Monitor Fonctionnement sur batterieCaractéristiques de lentrée Caractéristiques de la sortie de puissanceKits dextension pour les DPA 4120 et DPA Surveillance du défaut de masse entrée ligne haut-parleur Page Blockdiagram Page Page Page Bosch Communications Systems
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DPA 4120, DPA 4140 specifications

The Dynacord DPA 4120 and DPA 4140 are powerful amplifier solutions designed for professional audio applications. These models are ideal for live sound reinforcement, permanent installations, and various audio distribution requirements.

Both DPA 4120 and DPA 4140 are part of the Dynacord DPA series, which is renowned for delivering high-quality sound and reliability in demanding environments. The DPA 4120 provides a robust 1200 watts of power per channel at 4 ohms, while the DPA 4140 ups the ante with an impressive 1400 watts per channel at the same impedance, making them suitable for driving a wide range of speaker systems.

One of the standout features of both amplifiers is the incorporation of advanced DSP (Digital Signal Processing) technology. This technology offers precise control over sound performance, allowing users to tailor settings to meet specific venue acoustics or personal preferences. The DSP includes functions such as equalization, crossover adjustments, delay, and limiting, ensuring optimal sound delivery in any setting.

Durability is another hallmark of the Dynacord DPA series. The amplifiers feature a rugged, lightweight design, ideally suited for touring and rental companies. The internal architecture includes a sophisticated cooling system that allows for extended operation under high-demand conditions without overheating.

Both models are equipped with a range of connectivity options, including XLR inputs and Speakon outputs, facilitating seamless integration with various audio systems. The amplifiers support both analog and digital input sources, ensuring compatibility with modern audio setups.

In terms of sound quality, the DPA 4120 and DPA 4140 are engineered with low distortion levels and high efficiency, achieving high-performance audio output while maintaining clarity and detail across all frequencies. The amplifiers also feature a robust power supply that delivers consistent performance, even during peak use scenarios.

User-friendly controls and monitoring options are also inherent in the design of these amplifiers. An intuitive front panel interface allows for easy adjustment of settings, while LED indicators provide real-time feedback on performance and operational status.

In summary, the Dynacord DPA 4120 and DPA 4140 offer exceptional power, sound quality, and advanced features, making them excellent choices for audio professionals seeking reliable and powerful amplification solutions. Their combination of performance, durability, and versatility serves to meet the needs of various professional audio applications, solidifying their place in the competitive landscape of audio amplifiers.
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