Yamaha BR-10 Service Manual
SPEAKER SYSTEMS
BR10/BR12/BR15/BR12M/BR15M
SERVICE MANUAL
BR10 BR12 BR15
BR12M BR15M
CONTENTS
SPECIFICATIONS & DIMENSIONS .......... 3
CROSSOVER............................................................................ 4
DISASSEMBLY PROCEDURE
BR10/BR12/BR15.................................................................... 7
BR12M/BR15M ..................................................................... 10
PARTS LIST
（目次）
（
総合仕様＆寸法図
（分解手順）
）
PA
011734
BR12: 20040910-52500
BR15: 20040910-63000
BR12M: 20040910-57750
HAMAMATSU, JAPAN
Copyright (c) Y amaha Corporation. All rights r eserved. PDF-K733 '04.05
SPEAKER SYSTEMS
BR10/BR12/BR15/BR12M/BR15M
IMPORTANT NOTICE
This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed
that basic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and understood by the users, and have therefore not been restated.
WARNING : Failure to follow appropriate service and safety procedures when servicing this product may result in per-
IMPORTANT : This presentation or sale of this manual to any individual or firm does not constitute authorization certifi-
The data provided is belived to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, and
service departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable
and changes in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to
exist, please contact the distributor’s Service Division.
WARNING : Static discharges can destroy expensive components. Discharge any static electricity your body may have
IMPORTANT : Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power
sonal injury, destruction of expensive components and failure of the product to perform as specified. For
these reasons, we advise all Yamaha product owners that all service required should be performed by an
authorized Yamaha Retailer or the appointed service representative.
cation, recognition of any applicable technical capabilities, or establish a principal-agent relationship of
any form.
accumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect to
this bus.)
to the unit.
WARNING: CHEMICAL CONTENT NOTICE!
The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (Where
applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly
other entities) to cause cancer and/or birth defects or other reproductive harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT
SO EVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose
eyes to solder/flux vapor!
If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling
food.
Poly Switch
All full-range loudspeakers are fitted with a self-resetting
poly switch that protects the high-frequency driver from
damage caused by excessive power.
If a loudspeaker cabinet loses high-frequency output,
ポリスイッチ
スピーカーシステムには、自動復帰型ポリスイッチが内蔵されている
ため、過電流による故障から高音域ドライバーを保護します。スピー
カーシステムのキャビネットから高音域が出力されない場合は、すぐ
にパワーアンプ の電源を切り、ポリスイッチをリセットする（冷やす）
ために、2〜3分そのままにしてください。再度電源を入れ、高音域ド
ライバーの 出力を確認してくだ さい。
immediately remove power from the unit and wait for
two to three minutes. This should be long enough to
allow the poly switch to reset. Reapply power and check
the performance of the high-frequency driver before
continuing, with the power reduced to a level that does
not cause the poly switch to interrupt the signal.
WARNING
Components having special characteristics are marked and must be replaced with parts having specification equal to those
originally installed.
印の部品は、安全を維持するために重要な部品です。交換する場合は、安全のために必ず指定の部品をご使用ください。
2
SPEAKER SYSTEMS
*: EIA RS-426
Model BR10 BR12 BR12M BR15 BR15M
Enclosure Bass reflex type
Speaker Unit
LF 10" cone 12" cone 15" cone
HF 1" VC, Titanium
Frequency Response 65Hz-20kHz 60Hz-20kHz
Power Capacity
NOISE* 125W 150W 200W
PGM 250W 300W 400W
MAX 500W 600W 800W
Nominal Impedance 8Ω
Sensitivity
96dB SPL
(1W, 1m)
97dB SPL (1W, 1m) 98dB SPL (1W, 1m)
Input Connectors 1/4" phone jack x 2
Dimensions (WxHxD)
394mm x 537mm
x 326mm
403mm x 569mm
x 335mm
569mm x 407mm
x 334mm
485mm x 656mm
x 365mm
652mm x 487mm
x 365mm
Weight 14.4kg 16kg 21.3kg 20.9kg
BR10/BR12/BR15
H
W
D
BR12M/BR15M
W
D
H
15.6kg
BR10/BR12/BR15/BR12M/BR15M
SPECIFICATIONS & DIMENSIONS
（総合仕様＆寸法図）
Units: mm
（単位）
3
SPEAKER SYSTEMS
BR10/BR12/BR15/BR12M/BR15M
CROSSOVER
BR10
Units:inch
4
SPEAKER SYSTEMS
BR10/BR12/BR15/BR12M/BR15M
BR12/BR12M
Units:inch
5
SPEAKER SYSTEMS
BR10/BR12/BR15/BR12M/BR15M
BR15/BR15M
Units:inch
6
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