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Sansui AU-919 Service Manual

Sansui AU-919
14 pages
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Sansui AU-919 Specifications

General IconGeneral
Power Output100 watts per channel into 8Ω (stereo)
Damping Factor100
Speaker Load Impedance8Ω to 16Ω
TypeIntegrated Amplifier
Total Harmonic Distortion0.008%
Input Sensitivity2.5mV (MM)
Signal to Noise Ratio110 dB (line)

Summary

Specifications

Power Output

Details RMS power output and THD.

Total Harmonic Distortion

Specifies THD levels for power amp input.

Intermodulation Distortion

Details IM distortion using SMPTE method.

RIAA Curve Deviation

Details RIAA curve deviation for phono input.

Input Sensitivity and Impedance

Lists input sensitivity and impedance for various inputs.

Hum and Noise

Details hum and noise levels for different inputs.

Block Diagram

Circuit Description

2-1. MC Head Amp and Phono Equalization Circuit

Detailed description of MC Head Amp and Phono EQ circuit.

2-2. Operation and Features of Diamond Differential DC(DD/DC) Circuit

Details the DD/DC circuit's operation and features.

Adjustments

3-1. MC Head Amp (F-2833) Adjustment

Procedures for adjusting the MC Head Amp circuit.

3-2. Equalizer (F-2835) Adjustment

Procedures for adjusting the Equalizer Amp circuit.

3-3. Flat Amp (F-2841) Adjustment

Procedures for adjusting the Flat Amp circuit.

3-4. Driver Circuit (F-2839) Adjustment

Procedures for adjusting the Driver Circuit.

Replacements & Repair Notes

6-1. Power Supply Circuit Board, F-2844 for pre-amp section

Notes for replacing the pre-amp power supply board.

6-1. Power Supply Circuit Board, F-2845 for power amp section

Notes for replacing the power amp power supply board.

6-2. Repair notes

General repair notes and precautions for transistors and boards.

Schematic Diagram

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