Revox B250-S Service Manual

Revox B250-S
Serviceanleitung
Service
Instructions
Instructions
de
service

Revox B250-S Specifications

General

Total Harmonic Distortion	< 0.05%
Input Sensitivity	150 mV (line)
Damping Factor	> 100
Power Output	2 x 100 W at 8 Ohm
Frequency Response	20 Hz - 20 kHz
Signal-to-Noise Ratio	96 dB (line)
Weight	9.8 kg
Output	Speaker outputs
Input Impedance	47 kOhms (line)

Summary

2. Disassembly Procedures

2.1 General Disassembly Information

2.3 Fuse Replacement

Information on locating and replacing fuses in the device.

2.4 Disassembling the Chassis

2.5 Disassembling the Front Panel

3. Circuit Description

3.1 Audio Block Diagram Explanation

3.2 Microcomputer System Block Diagram

Explanation of the microcomputer system architecture and function.

3.3 Power Transformer Description

4. Electrical Measurements and Adjustments

4.1 Measuring Instruments and Tools

4.3 Operating Voltages

Table of operating voltages for the power amplifier stages.

4.4 Quiescent Current Adjustment

Procedure for measuring and adjusting quiescent current.

4.5 VF Display Brightness Control

Guide to adjusting the brightness of the vacuum fluorescent display.

7. Technical Data B250/B250-S

Continuous Power Output Specifications

Specifications for continuous power output at different impedances.

Harmonic Distortion Levels

Input Sensitivity and Impedance

Electrical specifications for all input types.

Signal-to-Noise Ratio Specs

Frequency Response Characteristics

7. Technical Data B150

Continuous Power Output Specs B150

Specifications for continuous power output at different impedances.

Harmonic Distortion Levels B150

Input Sensitivity and Impedance B150

Electrical specifications for all input types.

Signal-to-Noise Ratio Specs B150

Frequency Response Characteristics B150