McIntoshメーカーMC275の使用説明書/サービス説明書
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MC275 Owner ’ s Manual McIntosh Laboratory , Inc. 2 Chambers S treet Binghamton, New Y ork 13903-2699 Phone: 607-723-3512 F AX: 607-724-0549 S tereo Power Amplifier.
2 IMPOR T ANT SAFETY INSTRUCTIONS! PLEASE READ THEM BEFORE OPERA TING THIS EQUIPMENT . W ARNING - T O REDUCE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT EXPOSE THIS EQUIPMENT T O RAIN OR MOISTURE.
3 Customer Service T echnical Assist ance Please T ake A Moment Thank Y ou Copyright 2004 © by McIntosh Laboratory , Inc. The serial number , purchase date and McIntosh Dealer name are important to you for possible insurance claim or future service.
4 Performance Features Introduction and Performance Features Introduction Now you can take advantage of traditional McIntosh stan- dards of excellence in the MC275 Stereo Power Amplifier . T wo 75 watt output channels will drive any high quality Loudspeaker System to its ultimate performance.
5 MC275 Dimensions The following dimensions can assist in determining the best location for your MC275. There is additional informa- tion on page 7 pertaining to installing the MC275 into cabi- nets.
6 Inst allation of T ubes and T ube Cover Caution: T o prevent electrical shock make sure that the AC POWER CORD IS NOT CONNECTED T O THE MC275 when inserting or removing T ubes, as there are hazardous voltages present at the pins of the T ube Sockets.
7 Inst allation of T ubes, T ube Cover , Location and V entilation Small Signal T ubes: 1. Locate a 12AX7A T ube. 2. On the top left side of the amplifier , locate the T ube Socket that has the nomenclature V1 12AX7A next to it on the chassis. Refer to figure 4 and 5.
8 UNBALANCED INPUTS for audio cables from a preamplifier or control center audio outputs Left Side Panel Connections BALANCED INPUTS for audio cables from a preamplifier or control center audio output.
9 Connect the MC275 power cord to a live AC outlet. Refer to information on the back panel to deter- mine the correct volt- age Main Fuse holder , refer to information on the back panel of your MC275 .
10 How to Connect for Stereo How to Connect for Stereo 1. Connect cables from the Balanced Outputs of a McIn- tosh Preamplifier or Control Center to the MC275 Left and Right Balanced Inputs.
11 Jumper Cables Refer to page 13 for the correct switch settings How to Connect for Mono Parallel How to Connect for Mono Parallel 1. Connect cables from the Balanced Output of a McIn- tosh Preamplifier or Control Center to the MC275 Right Balanced Input.
12 Lef t Side Panel Controls and Switches MODE switch selects MONO (Parallel) or STEREO Modes of operation INPUTS switch se- lects between the BALanced or UNBALanced Inputs Power Switch turns all AC p.
13 Power On and Off Press the POWER switch to the ON position and sound will be heard from the Loudspeakers when the tubes have reached their operating temperature. The amount of time it takes is dependent upon the temperature of the T ubes. Press the POWER Switch to the Off posi- tion to stop amplifying the audio signal.
14 Specifications Specifications Power Output S tereo Minimum sine wave continuous average power output per channel, both channels operating is: 75 watts into 4, 8 or 16 ohm load Power Output Mono (Pa.
15 Packing Instructions Packing Instructions In the event it is necessary to repack the equipment for shipment, the equipment must be packed exactly as de- scribed and shown below . The MC275 V acuum T ubes must be removed from the Am- plifier T ube Sockets and placed into the inside open- ings of the four layer foam packing material.
McIntosh Part No. 04091201 McIntosh Laboratory , Inc. 2 Chambers Street Binghamton, NY 13903 The continuous improvement of its products is the policy of McIntosh Laboratory Incorporated who reserve the right to improve design without notice. Printed in the U.
デバイスMcIntosh MC275の購入後に(又は購入する前であっても)重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります:
McIntosh MC275をまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはMcIntosh MC275の技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。McIntosh MC275の取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。McIntosh MC275で得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
McIntosh MC275を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はMcIntosh MC275の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、McIntosh MC275に関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちMcIntosh MC275デバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。