Dynacord DPA 4140 Monitor output, Remote Control connector only NRS, Indicators Standby indicator

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5.5MONITOR output

The MONITOR output (16) on the NRS 90225 allows the connection of an additional power amplifier for monitoring purposes. The low impedance output is electronically balanced, which offers the possibility to achieve cable lengths of up to 200 m. Connection is performed via the REMOTE CONTROL pin-connector strip (see also figure 4). For the remote control module NRS 90222, the MONITOR output is located on the REMOTE CONTROL connector (22). The PROMATRIX manager DPM 4000 switches the signal to the according the monitor channel. In case a floating output is required, the monitor output is prepared for retrofitting an output transformer; provided through the optional extension NRS 90227 (please also refer to paragraph 8.4).

Note: Functioning changes in the models DPA 4120 (starting with serial numbers: 100 11) and DPA 4140 (starting with serial numbers: 100 11) in association with the input module NRS 90225: To achieve reliable attenuation of switching noise (knacks), the monitor output stays muted as long as the READY-relay is not pulled. Because of circuit design reasons this causes that the monitor output is also muted even when a ground-fault appears at the main output.

5.6REMOTE CONTROL connector (only NRS 90225)

The 15-pole sub-D REMOTE CONTROL pin-connector strip (16) provides several different control in-/outputs:

- Ground of the stand-by power supply

- negative pole grounded

- POWER REMOTE

- via contact to ground potential

- BATTERY REMOTE

- via contact to ground potential

- MONITOR output

- electronically balanced

- READY-message

- with floating contact

- Obligatory reception relay D-RELAY

- via contact to ground potential

- Single call E-RELAY

- via contact to ground potential

2A STANDBY GROUND

3POWER REMOTE

4BATTERY REMOTE

5

D - RELAY

REMOTE CONTROL

6

E - RELAY

 

7

 

 

8READY

9+ MONITOR

10- MONITOR

figure 4 connections on the REMOTE CONTROL pin-connector strip

6.Indicators

6.1STANDBY indicator

When the appliance is correctly connected and mains and/or battery power is present, the green STANDBY indicator (4) will light.

6.2READY indicator

Both amplifiers, the DPA 4120 and the DPA 4140, employ power-on switching delays of approximately 3 sec. to effectively eliminate power-on switching noise. After this time, the green READY indicator (7) lights and the READY fault message relay picks up when no error is being detected. When the power amplifier's mains transformer exceeds a certain value or, when – with installed NRS 90224 extension – the pilot tone falls below the threshold (see also paragraph 8.5.1), the green READY indicator (7) is not lit and the READY fault message relay drops.

6.3PROTECT indicator

When thermal overload of the mains transformer or the power amplification stage is encountered, the red PROTECT indicator (5) will light and the READY fault message relay drops. After the amplifier regained normal temperature, the red PROTECT indicator (5) is automatically dimmed and the appliance returns to normal operation. High temperature can be caused by overload, extreme ambient temperatures or faulty functioning of the system's ventilation.

6.4GROUND FAULT indicator

If, with the NRS 90224 extension installed, a ground fault is being detected at the power output, the red GROUND FAULT indicator (6) will light and the READY fault message relay will drop. During the occurrence of this error normal operation is maintained. After eliminating the cause for the ground fault, pressing the TEST button (3) resets the GROUND FAULT indicator (6) (see also paragraph 8.5.2).

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Contents Power Amplifier DPA 4120 / DPA Leistungsmerkmale+7,*6,&+5+,76+,1,6 Anzeigen, Bedienungselemente und Anschlüsse DPAInhaltsverzeichnis Der Verstärker ist zu schützen vor InstallationshinweiseVerwendung Vor der InbetriebnahmeBatteriebetrieb 24V DC Eingang InputAusgänge Leistungsausgang Power Output Kontrollausgang Monitor Leistungsausgang Power Output für niederohmige LautsprecherSteueranschluß Remote Control nur NRS Anzeigen STANDBY-AnzeigeGround 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 Erdschluß-Überwachung Pilotton & Erdschluß Überwachung NRSPilotton-Überwachung Der Einbau ist wie folgt vorzunehmen siehe Bild 8 bzw. BildNRS 90 406 S 411 Prüfung der Funktion Pilotton-Überwachung Einbau in 19-Gehäuse oder 19-Gestellschränke Groundlift Schalter Circuit a to Chassis SwitchPrüfung der Funktion Erdschluß-Überwachung Sicherungen Sicherungen in DPA503 F Page Page Eigenschaften des Leistungs-Ausgangs BatteriebetriebEigenschaften des Eingangs Eigenschaften des Monitor-AusgangsNachrüstsätze für DPA 4120 und DPA Erdschluß Überwachung Performance Features 03257$176$7,16758&7,216 Indicators, controls and connections 12 aContents Amplifier has to be protected from InstallationUtilization Before the first operationBattery operation 24V DC InputOutputs Power Output for 100V 70V or 50V loudspeaker systemsPower Output for low impedance loudspeaker systems Single Call and obligatory reception relays Override BypassReady indicator Remote Control connector only NRSIndicators Standby indicator Protect indicatorLevel meter and Clip indicator Enhanced application field Standard input module NRS Remote 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 Ground lift switch Circuit a to Chassis Switch Checking the ground fault surveillance functionCase and 19-rack-shelf system installation Fuses Fuses in the DPA503 F 503 F 601 602 Battery operation Features of the input nominal input levelDPA 4140 power amplifier 400 W power supply Mains operation Extension kits for the DPA 4120 and DPANRS 90208 input transformer for floating, balanced input Amplificateur DE Puissance DPA 4120 / DPA Caractéristiques techniques16758&7,2166e&85,7e,03257$176 Témoins, contrôles et connexions NRS 90225 module dentrée général Avant la première utilisation UtilisationLamplificateur doit être protégé contre Fonctionnement sur le secteurFonctionnement sur batterie 24V DC Input EntréeCâblage LF pour le couplage de deux amplificateurs DPA SortiesTémoins Témoin Standby Connecteur Remote Control NRS 90225 uniquementSortie Monitor Témoin ReadyTémoin Ground Fault Vumètre et témoin ClipModule de télécommande NRS Champs dapplications avancées Module dentrée standard NRSPage Input Transformer NRS Output Transformer NRS Surveillance de la fréquence pilote Surveillance de défaut de masseNRS 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 de puissance Fonctionnement sur batterieCaractéristiques de lentrée 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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