Dynacord PAA 460 User Manual

Specifies minimum air gaps and creeping distances for electrical safety.

Emphasizes using original parts and avoiding unauthorized circuit modifications.

Stresses adherence to workplace safety regulations for proper handling.

Lists rated output power for different impedance loads (8 Ohm, 4 Ohm).

Details frequency response with LO-HI-CUT filter in/out.

Specifies the total harmonic distortion (Kges) at nominal power.

Indicates crosstalk attenuation between channels.

Presents noise voltage measurements for audio channels.

Details the adjustment procedure for LED indicators on output and input.

Describes DC protection circuit behavior based on LO-HI-CUT filter settings.

Outlines the short circuit test method using a 1 Ohm load and oscilloscope.

Details indirect idle current adjustment via voltage drop across a resistor.

Provides power consumption values for no-load and full-load operation.

Specifies the idle current trimmer component R 027.

Details adjusting zero volts using the external offset trimmer R 011.

Notes the approximate peak-to-peak voltage during full overload.

Explains setting input attenuators and signal generator for LED half-brightness.

Details testing the DC protection circuit by disconnecting speakers and using a signal generator.

Specifies channel usage for bridged mode operation.

Indicates the amplifier is for professional applications, not home use.

Specifies voltage measurement conditions: after delay and relative to ground.

Notes the use of a VTVM for logarithmic AC measurements.

Details input level specifications for XLR and jack connections.

Lists music and rated power output for stereo and bridged modes.

Specifies frequency response with LO-HI-CUT filter enabled or disabled.

Provides specifications for distortion, crosstalk, signal-to-noise ratio, and slew rate.

Lists maximum power consumption and required operating voltage.

Includes physical dimensions, weight, safety class, and turn-on delay.

Specifies measurement conditions: voltage, frequency, input voltage, and load impedance.

Details the settings for the function selector switch.

Presents rated output power measurements for various load impedances.

Defines the frequency response range with LO-HI-CUT filter settings.

Provides harmonic distortion and crosstalk attenuation values.

Lists noise voltage measurements for channels A and B.

Details adjustment of LED brightness for input and output indicators.

Explains DC protection circuit activation based on LO-HI-CUT filter state.

Describes short circuit testing by terminating with a 1 Ohm load and measuring output voltage.

Details indirect idle current adjustment by measuring voltage drop across a resistor.

States power consumption when the unit is not under load.

Provides power consumption when output power is delivered to load.

Identifies the idle current adjustment trimmer R 027.

Specifies adjusting zero volts with the external offset trimmer R 011.

Notes the approximate peak-to-peak voltage during overload.

Explains idle current adjustment using a fuse replaced by a resistor.

Describes setting input attenuators and signal generator for LED level adjustment.

Details testing the DC protection circuit with signal generator and filter settings.

Specifies channel usage or switch setting for bridged mode.

States the amplifier is for professional use, not household.

Defines voltage measurement conditions: after delay and relative to ground.

Notes logarithmic AC measurements using a VTVM.

Specifies input levels for XLR and jack, and input impedance.

Details channel programming and bridged mode configurations.

Lists rated output power for various loads and minimum load impedance.

Provides frequency response data with LO-HI-CUT filter settings.

Specifies distortion, noise, slew rate, and damping factor.

Lists power consumption, weight, and physical dimensions.

States operating voltage, safety class, and turn-on delay.

Identifies key components and notes for Channel A.

Identifies key components and notes for Channel B.

Graph showing frequency response from 2 Hz to 2 kHz with filter settings.

Graph showing frequency response from 20 Hz to 20 kHz with filter settings.

Frequency response graph for LO-HI-CUT filter in 'OUT' position.

Graph detailing frequency response with LO-HI-CUT filter in 'IN' position.

Schematic for input stages and protection circuits.

Circuit diagram for signal processing and output stages.

Key notes and symbols used in the circuit diagrams.

Wiring diagram for the power supply and distribution.

Wiring details for the audio signal paths.

Shows component placement on the input display board.

Illustrates component placement on the output display board.

Depicts component placement on the relay module board.

Shows component placement on the power amplifier module.

Lists spare parts for front panel, handles, and connectors.

Details spare parts for switches, terminals, and sockets.

Lists electronic components like rectifiers, transformers, and accessories.

Lists spare diodes, including Zener diodes and LEDs.

Details spare integrated circuits and transistors.

Lists spare potentiometers and print plates.

Lists spare potentiometers and electrolytic capacitors.

Details spare diodes and relays.

Lists spare ICs, transistors, and wire wound resistors.

Details spare switches and safety resistors.

Lists spare Zener diodes and filter coils.

Details various spare transistor types.

Lists spare trimpot components.

Lists spare resistors and thermal switches.

Provides manufacturer contact information and revision date.