Dynacord DPA 4120, DPA 4140 owner manual 601 602

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F 601

F 602

figure 12 printed board assemblies 86243 DPA 4120 and DPA 4140 showing the AC fuses F601 and F602

Caution Before opening the appliance, make sure to disconnect the mains and/or battery power source!

Replacing the fuses F502 and F503 (only to be carried out by the experienced service technician!)

The battery fuses F502 and F503 are located on the power supply PCBs 85270 (DPA 4120) and 85268 (DPA 4140) behind the AMP battery connectors (see also figure 10 and/or figure 11). To replace these fuses you have to remove the cover plate of the appliance and afterwards the power supply input PCB 86243 which is mounted to the rear panel of the appliance. Therefore detach the yellow/green cable from the ground-connector on the appliance's rear panel. Pressing the lock-strap of the AMP-connector together, it can be removed without applying any force. Now, you have to remove the three screws marked "A" (refer to the diagram of the appliance's rear panel on page

2)which allows you to twist the power supply input PCB 86243 up. Make sure not to damage any wires or any other parts. The fuses F502 and F503 are now accessible and can be removed. To re-install the power supply input PCB 86243, these steps have to be proceeded in the opposite order. The yellow/green cable has to be reconnected to the ground-connector on the rear panel of the appliance. By pulling the cable make sure that it sits snugly. Then you can re-attach the cover plate of the enclosure.

Caution For security reasons it is necessary to ensure that, after the installation is completed, all wiring located beneath the power supply input PCB are within a distance of at least 6 mm to the printed board assembly.

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Contents Leistungsmerkmale Power Amplifier DPA 4120 / DPA+7,*6,&+5+,76+,1,6 DPA Anzeigen, Bedienungselemente und AnschlüsseInhaltsverzeichnis Verwendung InstallationshinweiseDer Verstärker ist zu schützen vor Vor der InbetriebnahmeEingang Input Batteriebetrieb 24V DCAusgänge Leistungsausgang Power Output Steueranschluß Remote Control nur NRS Leistungsausgang Power Output für niederohmige LautsprecherKontrollausgang Monitor Anzeigen STANDBY-AnzeigeAussteuerungskontrolle und CLIP-Anzeige Ground Fault AnzeigeProtect Anzeige Remote Modul NRS Der Einbau ist wie folgt vorzunehmen siehe Bild 6 bzw. Bild Input Transformer NRS Output Transformer NRS Pilotton-Überwachung Pilotton & Erdschluß Überwachung NRSErdschluß-Überwachung Der Einbau ist wie folgt vorzunehmen siehe Bild 8 bzw. BildNRS 90 406 S 411 Prüfung der Funktion Pilotton-Überwachung Prüfung der Funktion Erdschluß-Überwachung Groundlift Schalter Circuit a to Chassis SwitchEinbau in 19-Gehäuse oder 19-Gestellschränke Sicherungen Sicherungen in DPA503 F Page Page Eigenschaften des Eingangs BatteriebetriebEigenschaften des Leistungs-Ausgangs Eigenschaften des Monitor-AusgangsNachrüstsätze für DPA 4120 und DPA Erdschluß Überwachung Performance Features 03257$176$7,16758&7,216 12 a Indicators, controls and connectionsContents Utilization InstallationAmplifier has to be protected from Before the first operationInput Battery operation 24V DCPower Output for low impedance loudspeaker systems Power Output for 100V 70V or 50V loudspeaker systemsOutputs Single Call and obligatory reception relays Override BypassIndicators Standby indicator Remote Control connector only NRSReady indicator Protect 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 Pilot tone surveillance NRS 90224 pilot tone & ground fault surveillanceGround fault surveillance NRS 90 406 S 411 Checking the pilot tone surveillance function Case and 19-rack-shelf system installation Checking the ground fault surveillance functionGround lift switch Circuit a to Chassis Switch Fuses Fuses in the DPA503 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 Lamplificateur doit être protégé contre UtilisationAvant la première utilisation Fonctionnement sur le secteurInput Entrée Fonctionnement sur batterie 24V DCSorties Câblage LF pour le couplage de deux amplificateurs DPASortie Monitor Connecteur Remote Control NRS 90225 uniquementTémoins Témoin Standby Témoin ReadyVumètre 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 Fusibles Fusibles du DPA Installation en rack 19 et en armoire rackCommutateur de mise à la masse Circuit a to Chassis Switch 503 F 503 F 601 602 Caractéristiques de lentrée Fonctionnement sur batterieCaractéristiques de la sortie de puissance Caractéristiques de la sortie MonitorKits 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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