McIntoshメーカーMC-2000の使用説明書/サービス説明書
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MC2000 T ube P ower Amplifier New Millennium Edition MC2000 T ube P ower Amplifier New Millennium Edition 50th Anniversar y 1949 - 1999 50th Anniversar y 1949 - 1999 MC2000 OWNER S MANU AL.
2 For Fifty Y ears 1999 is the 50 th year of business for McIntosh Laboratory of Binghamton, New Y ork. It all started when Frank H. McIntosh or ganized a small electronic en- gineering consulting firm in the W ashington, DC area. One of the many goals his firm ad- dressed was the need for a high quality audio power amplifier .
3 The MC2000 was Designed by Sidney A. Corderman McIntosh C22 Preamplifier McIntosh MR71 FM T uner McIntosh MCD7000 CD Player Sidney A. Corderman In 1951, Sidney A. Corderman joined the Company as Chief Engineer . He was directly in- volved with the designs of all the successful McIntosh prod- ucts from that time on.
4 Thank you for your decision to own this McIntosh MC2000 T ube Power Amplifier . Y ou now have The Best. The McIntosh dedication to Quality , is as- surance that you will receive many years of musical enjoyment from this unit. Please take the time to read the information in this Owners Manual.
5 IMPOR T ANT SAFETY INSTRUCTIONS! PLEASE READ THEM BEFORE OPERA TING THIS EQUIPMENT . General: 1. Read all the safety and operating instructions contained in this owner s manual, before operat- ing this equipment. 2. Retain this owner s manual for future reference about safety and operating instructions.
6 Care of Equipment: 18. Clean the instrument by using the supplied spe- cial fabric cloth. Unplug this equipment from the wall outlet and clean the front panel with a regu- lar cloth moistened with a window cleaner . Do not apply liquid or aerosol cleaners directly on the equipment.
7 Inst allation The installation of the MC2000 T ube Power Am pli- fier in your system consists of three main steps: 1. Unpacking the MC2000 along with accessories from their shipping cartons. 2. Installation of the vacuum tubes and the protec- tive tube cover .
8 Installation of T ubes and Cover Y our MC2000 has gone through an extensive series of performance tests during the manufacturing pro- cess. The actual tubes that were used to test and con- firm the performance of this amplifier are included in the McIntosh MC2000 T ube Set Box, refer to figure 3.
9 Inst allation, cont Figure 6 T ube Cover Fastening Scr ew Locations T ube Cover Wide Side Opening After all the tubes have been inserted into the correct sockets, the tube cover must to be installed before op- erating the MC2000.
10 MC2000 Rear Panel Connections LEFT BALANCED INPUT for audio cables from a Preampli- fier or Control Center Audio Outputs RIGHT CHANNEL BALANCED INPUT for audio cables from a Preamplifier or Control.
11 McIntosh C100 Controller 1. For Remote Power Control, connect a power con- trol cable from the Control Center or Preamplifier Power Control Out to the MC2000 Power Con- trol In. Note: The Power Contr ol Connecting Cable is available from the McIntosh Parts Department: Data and Power Control Cable Part No.
12 McIntosh C100 Preamplifier Spade lug or prepared wire connection: Insert the spade lug connector or prepared sec- tion of the cable end into the terminal side ac- cess hole, and tighten the terminal cap until the cable is firmly clamped into the terminal so the wires cannot slip out.
13 MC2000 Front Panel Controls and Displays POWER Switch turns AC Power, ON/OFF , or ON/REMOTE modes METER indicates the Left Channel Power Output, switchable to indicate bias readings of each pair of.
14 Power On T o have the MC2000 automatically turn On or Off when a Control Center turns On or Off, rotate the POWER Switch to the REMOTE position. For manual operation, rotate the power switch to the ON or OFF position as desired.
15 MC2000. After the amplifier has been on for about 2 minutes make an initial adjustment (as outlined below). This should then be followed by a final adjustment after the MC2000 has been on for about 30 minutes.
16 T echnical Description In the late 1940 s Frank McIntosh and Gordon Gow invented and patented a new output circuit arrange- ment for audio power amplifiers, the McIntosh Unity Coupled Output Circuit. Refer to figure 19. This cir- cuit has two very impor - tant features that differen- tiate it from other de- signs.
17 T echnical Description - - Figure 20 Block Diagram of the Amplifier Section.
18 The driver stage is fed by the 12AX7A input/ phase inverter stage. A resistance-capacitance step network couples this stage to the driver . This arrange- ment controls low frequency phase shift. The phase inverter uses no coupling capacitors so no low fre- quency phase shift is introduced.
19 T echnical Description, cont Block Diagram of the Power Supply Section Figure 21 .
20 Note: These Performance Charts are examples of typical performance of the MC2000. -100 +0 20 20k 50 100 200 500 1k 2k 5k 10k Hz (Hertz) dB (Decibel) Signal to Noise Ratio FFT S pectrum Analysis ref. full power -25 +0 -20 -15 -10 -5 10 100k 20 50 100 200 50 0 1k 2k 5k 10k 20k 50k dB (Decibel) Hz (Hertz) Frequency Response @ 1 W att THD % 0.
21 Performance Chart s Note: These Performance Charts are examples of typical performance of the MC2000. -0 4 1 2 3 300m 200 500m 1 2 5 10 20 50 100 Power in W atts T o t al Harmonic Distortion vs. Power Output @ 20Hz THD % -0 4 1 2 3 300m 200 500m 1 2 5 10 20 50 100 Power in W atts T otal Harmonic Distortion vs.
22 Power Output 130 watts into 8, 4 or 2 ohm loads is the minimum sine wave continuous average power output per chan- nel from 20Hz to 20,000Hz with both channels oper- ating.
23 Packing Instructions Packing Instructions In the event it is necessary to repack the MC2000 Amplifier for shipment, the equipment must be packed exactly as shown below . It is very important that the four metal feet are attached to the bottom of the equipment.
McINTOSH LABORA T OR Y , INC. 2 CHAMBERS STREET , BINGHAMTON, NEW YORK 13903-2699 The continuous impr o vement of its products is the policy of McIntosh Laborator y Incor porated who reser ve the right to improv e design without notice. Printed in the U .
デバイスMcIntosh MC-2000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 MC-2000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 MC-2000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 MC-2000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 MC-2000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 MC-2000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 MC-2000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 MC-2000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 MC-2000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。
