Yamaha MSR250 Service Manual

SERVICE MANUAL
SPECIFICATIONS （総合仕様）..................................................................... 3
PERFORMANC GRAPH （特性図）............................................................... 4
PANEL LAYOUT （パネルレイアウト）......................................................... 4
CIRCUIT BOARD LAYOUT （ユニットレイアウト）.................................... 5
DIMENSIONS （寸法図）.............................................................................. 5
DISASSEMBLY PROCEDURES （分解手順）............................................... 6
IC BLOCK DIAGRAM （ICブロック図）...................................................... 15
CIRCUIT BOARDS （シート基板図）........................................................... 15
INSPECTIONS （検査）............................................................................... 23
PARTS LIST
BLOCK & LEVEL DIAGRAM （ブロック&レベルダイアグラム）
CIRCUIT DIAGRAM （回路図）
■ CONTENTS （目次）
PA 011901
200805-72450
Copyright (c) Yamaha Corporation. All rights reserved. 08.06
HAMAMATSU, JAPAN
MSR250

Yamaha MSR250 Specifications

General

Tweeter	Yes
Speaker type	2-way
Number of drivers	1
Speaker placement	Floor
Audio output channels	1.0 channels
Woofer diameter (imperial)	10 \
Subwoofer driver diameter (imperial)	1 \
Product color	Black
LED indicators	Power
Housing material	Polypropylene (PP)
Recommended usage	Speaker set unit
Impedance	4 Ω
Frequency range	55 - 20000 Hz
RMS rated power	250 W
Crossover frequency	4000 Hz
Total Harmonic Distortion (THD)	1 %
Microphone sensitivity	-50 dB
Connectivity technology	Wired
Power consumption (typical)	40 W

Weight and Dimensions

Depth	298 mm
Width	342 mm
Height	544.5 mm
Weight	14100 g