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MANUALE DI ISTRUZIONI
OPERATING MANUAL
T2.5 - T4.5 - T6.5
AMPLIFICATORI DI POTENZA
POWER AMPLIFIERS
PROFESSIONAL AUDIO

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Summarization of Contents

Safety Precautions
Servicing and Internal Work
Refer servicing to qualified personnel and disconnect power before internal work.
Introduction to Outline T Series
DIGAM Technology Overview
Explains DIGAM technology with full switching output stage for efficiency and performance.
PWM Technology Benefits
Details PWM circuitry advantages like power density, efficiency, and size reduction.
Rear Panel Overview
MAINS Power Connector
Connector for power supply connection.
Cooling Slots
Apertures for air circulation; must be kept clear.
Channel 2 Input and Output Connectors
Connectors for Channel 2 signal input and output.
Channel 1 Input and Output Connectors
Connectors for Channel 1 signal input and output.
Front Panel Overview
Status Indicators and Monitoring
Describes SHORT CIRCUIT, OVER TEMP, and READY status LEDs.
Input Sensitivity Controls
Potentiometers for adjusting input sensitivity for each channel.
Output VU Meters
LED VU meters for visualizing output power for each channel.
Cooling Slots and Power Switch
Front air intake openings and the main power ON/OFF switch.
Installation and Ventilation
Rack Mounting
Designed for 19" rack mounting; support in rear part is important.
Air Cooling Requirements
Ensuring adequate airflow (min 45 m³/h) for proper operation.
Installation Precautions
Avoid dusty/humid locations and proximity to TV/radio equipment.
Cabling and Input Connections
Input Connections
Using XLR connectors for signal input, parallel connections for mono use.
Input Connection Tips
Guidance on cable quality, routing, and ground loop prevention.
Output Connections and Power
Loudspeaker Connection Polarity
Ensure correct polarity for phase-aligned output signals.
Output Connection Warnings
Do not connect outputs together or short-circuit them.
Connection Reliability
Use stable connectors with adequate current capacity.
Mains Connection and Grounding
Connect the 3-pin cable's ground pin to the chassis ground.
Power Fuse Access
Main fuse is not externally accessible; contact service if blown.
Connection Examples
Dual Connection Example
Illustrates connecting one amplifier to two loudspeakers.
Parallel Connection Example
Illustrates connecting one amplifier to multiple loudspeakers in parallel.
Dual-Parallel Connection Example
Connecting Multiple Amplifiers
Shows connecting multiple amplifiers for dual-parallel operation.
Mounting Dimensions
Physical Dimensions
Provides detailed mechanical dimensions for rack mounting.
Technical Specifications
Output Power Ratings
Continuous rated output power for different impedance loads.
Input Impedance and Sensitivity
Details input impedance and sensitivity levels for each model.
Voltage Gain and Input Level
Specifies voltage gain and maximum input level.
Distortion and Noise Specifications
Information on THD, Signal/Noise ratio, Crosstalk, Slew Rate, Rise Time.
Damping Factor and Bandwidth
Details damping factor and frequency response bandwidth.
Amplifier and Load Protections
Lists internal amplifier and load protection features.
Cooling System
Details the cooling fan specifications.
Circuitry and Consumption
Circuitry Description
Describes the switching power supply and amplifier stage frequencies.
Power Output Devices
Number of power output devices used.
Input and Output Connections
Specifies connector types for input and output.
Power Requirements and Consumption
Details voltage requirements and power consumption.
Dimensions and Weight
Provides overall unit dimensions and weight.