Dynacord DPA 4245 User Manual

OWNER‘S MANUAL
Features
• 2 x 450 watts output power capacity DPA 4245
• 2 x 600 watts output power capacity DPA 4260
• oating 100 V / 70 V / 25 V power outputs (isolated outputs)
• low impedance outputs (direct outputs)
• bridged mode operation, switchable
• all outputs are protected against idling and short-circuit
• mains supply 230 V AC 50/60 Hz
• POWER REMOTE function
• service mains switch
• active ventilation via 2 temperature-controlled DC-fans
• electronically balanced inputs
• routing switch for parallel linked operation
• input gain controls
• integrated audio limiters
• power-on switching noise suppression
• protection circuitry: DC/HF, Back-EMF, output voltage overload limiters, initial inrush current limiter,
output peak current limiter
• 18 dB/oct. LO-cut lter at 45 Hz
• SIGNAL and LIMIT indication for optical monitoring
• thermal overload protection for the heat sink and the internal power supply, with PROTECT-function
• inputs transformers for balanced, oating operation are optionally available
• XLR-type and binding post clamping input connectors
• 19“ frame size, 3 HU
2 x 450 WATTS POWER AMPLIFIER
DPA 4245
SIGNAL
LIMIT
POWER
PROTECT
CH A
CH B
DPA 4245 / DPA 4260 POWER AMPLIFIER

Dynacord DPA 4245 Specifications

General

Brand	Dynacord
Model	DPA 4245
Category	Amplifier
Language	English

Summary

Safety and Service Information

Important Safety Instructions

Crucial guidelines to prevent electric shock, fire, and ensure safe operation.

Service Instructions

Guidelines for qualified personnel to perform maintenance safely and correctly.

Product Overview and Installation

Product Description

Overview of DPA-Series power amplifiers for PA systems and general applications.

Installation Guidelines

Recommendations for proper rack-mounting and ventilation to ensure performance.

Initial Operation

Steps to follow before the first power-on, including mains connection and remote start.

Connectivity and Audio Modes

Input Options and Routing

Details on electronically balanced inputs, XLR/binding post connectors, and input routing.

Output Configurations

Explanation of direct and isolated outputs, including 100V, 70V, 25V, and low impedance options.

Bridged Mode Operation

How to link channels for increased output power and voltage in monaural operation.

Front Panel, Protection, and Power

Controls and Indicators

Explanation of Ground Lift switch, Power On/Remote, Limit, Signal, PROTECT, and Power ON LEDs.

Protection Circuitry

Comprehensive list of protection features like thermal overload, DC/HF, and current limiters.

Technical Data and Documentation

Power, Fuses, and Extension Kits

Information on power consumption, fuses, and available extension kits for the amplifiers.

Technical Specifications

Detailed electrical and performance specifications for DPA 4245 and DPA 4260 amplifiers.

Bridged Mode Specifications

Performance data specifically for bridged mode operation of the DPA series.

Block Diagram

A functional block diagram illustrating the amplifier's internal circuitry and signal flow.

Physical Dimensions

Drawings and measurements detailing the physical size and mounting depth of the units.