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Arcam Delta 290 Service Manual

Arcam Delta 290
15 pages
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Arcam Delta 290 Specifications

General IconGeneral
TypeIntegrated Amplifier
Power Output75W per channel into 8Ω
Frequency Response20Hz - 20kHz
Total Harmonic Distortion0.02%
Signal to Noise Ratio>100dB
Input Sensitivity150mV (line)
Damping Factor>100
Dimensions430 x 100 x 360 mm

Summary

Circuit Description

Input/Output Selection

Describes the selection of 6 line level inputs using a motorised listen switch.

Tone Control & Preamp Out/Power Amp In

Details the tone control stage, balance control, and preamp out buffer.

Power Amplifier

Explains the signal path into the power amp stage and its output stage components.

Power Supplies

Outlines the toroidal transformer and its secondary windings for power supply generation.

Protection/Mute circuit

Details the functions of IC501 for turn on delay, DC offset, and thermal cutout.

Disc Stage (optional)

Describes the optional phono stage for MC/MM cartridges and RIAA equalization.

Change of Mains Voltage

Service Notes

D290 Service Note 1

Circuit Diagrams

Input Selection

Diagram illustrating input selection circuitry and connections.

Remote Receive & Control Circuit

Diagram for the remote control receiver and associated circuitry.

Tone Controls & Preamp Out

Circuit diagram detailing tone controls and preamp output stages.

Power Amplifier Issue 7

Circuit diagram for the power amplifier stage, specifically for Issue 7 PCBs.

Protection & Mains Input

Diagram showing protection circuits and mains input connections.

MM/MC Phono Stage

Circuit diagram for the optional MM/MC phono amplifier stage.

Power Amplifier < Issue 7

Circuit diagram for the power amplifier stage for PCBs prior to Issue 7.

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