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MC207

Owner’s Manual

McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 FAX: 607-724-0549

Seven Channel Power Amplifier

Summary of Contents for MC207

Page 1: ...MC207 Owner s Manual McIntosh Laboratory Inc 2 Chambers Street Binghamton New York 13903 2699 Phone 607 723 3512 FAX 607 724 0549 Seven Channel Power Amplifier ...

Page 2: ...A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at plugs convenience recep...

Page 3: ...u and Please Take a Moment 3 Technical Assistance and Customer Service 3 Table of Contents 3 Important Information 3 Connector Information 4 Introduction 4 Performance Features 4 Dimensions 5 Installation 6 Rear Panel Connections 7 How to Connect for Seven Channels 8 How to Connect for Five Channels 10 How to Connect for Two Channels Zone B 12 Front Panel Displays and Controls 14 How to Operate an...

Page 4: ...amplifier from being over driven into clipping with its harsh distorted sound that can also damage your valuable Loudspeakers Dynamic Power ManagerTM The MC207 s Dynamic Power Manager DPM circuitry allows for the connection of either 4 ohm or 8 ohm Loud speakers while at the same time delivering identical power output A peak output current of 25 amperes per channel ensures that it will successfull...

Page 5: ...orma tion on the next page pertaining to installing the MC207 into cabinets Dimensions 17 1 2 44 45cm 8 7 8 22 54cm Front View of the MC207 Rear View of the MC207 9 7 16 23 97cm 11 3 4 29 85cm 16 13 16 42 70cm Side View of the MC207 18 3 4 47 63cm 3 16 0 48cm 7 8 2 22cm 8 1 4 20 96cm 12 30 48cm 16 7 16 41 75cm 2 5 08cm ...

Page 6: ...un ning ventilation fan can be a definite as set in maintaining all the system com ponents at the coolest possible op erating temperature A custom cabinet installation should provide the follow ing minimum spac ing dimensions for cool operation Al low at least 6 inches 15 24cm above the top 2 inches Installation 8 5 16 21 11cm 17 1 16 43 34cm MC207 Front Panel Custom Cabinet Cutout Cutout Opening ...

Page 7: ...nel for Zone B OUPUT Connections for 4 ohm or 8 ohm Loudspeaker for Channel 5 Left Back or Left Channel for Zone B OUPUT Connections for 4 ohm or 8 ohm Loudspeaker for Channel 4 Center Front OUPUT Connections for 4 ohm or 8 ohm Loudspeaker for Chan nel 1 Left Front OUPUT Connections for 4 ohm or 8 ohm Loudspeaker for Channel 3 Right Sur round OUPUT Connections for 4 ohm or 8 ohm Loudspeaker for Ch...

Page 8: ...ds together or attach spade lug and or banana connector Spade lug or prepared wire connection Insert the spade lug connector or prepared section of the cable end into the terminal side access hole and tighten the terminal cap until the cable is firmly clamped into the terminal so the wires cannot slip out Refer to figures 4 5 6 Banana plug connection Tighten the top portion of the terminal post an...

Page 9: ...nect for Seven Channels Right Front Loudspeaker Left Front Loudspeaker Right Surround Loudspeaker Left Surround Loudspeaker Back Surround Loudspeaker Center Front Loudspeaker Back Surround Loudspeaker To AC Outlet ...

Page 10: ...or Spade lug or prepared wire connection Insert the spade lug connector or prepared section of the cable end into the terminal side access hole and tighten the terminal cap until the cable is firmly clamped into the terminal so the wires cannot slip out Refer to figures 4 5 6 Banana plug connection Tighten the top portion of the terminal post and insert the banana plug into the opening at the top ...

Page 11: ...11 Right Front Loudspeaker Left Front Loudspeaker Right Surround Loudspeaker Left Surround Loudspeaker Center Front Loudspeaker To AC Outlet How to Connect for Five Channels ...

Page 12: ...r or prepared section of the cable end into the terminal side access hole and tighten the terminal cap until the cable is firmly clamped into the terminal so the wires cannot slip out Refer to figures 4 5 6 Banana plug connection Tighten the top portion of the terminal post and insert the banana plug into the opening at the top of the ter minal Refer to figure 7 Note The use of Banana Plugs is for...

Page 13: ...13 Left Channel Zone B Right Channel Zone B To AC Outlet How to Connect for Two Channels Zone B ...

Page 14: ...when the Center Front Channel 4 POWER GUARD Circuit activates POWER GUARD LED lights when the Right Front Channel 7 POWER GUARD Circuit activates POWER OUTPUT METER indicates power output of the Center Front Channel 4 POWER OUTPUT METER indicates power output of the Right Front Channel 7 POWER OUTPUT METER indicates power output of the Left Front Channel 1 POWER GUARD LEDs light when the Left Surr...

Page 15: ...07 s Dynamic Power Manager circuitry allows for the connection of either 4 ohm or 8 ohm Loudspeakers to its output terminals while at the same time delivering the same power output Refer to figure 10 Place the IMPEDANCE Switch to the position 4 ohm or 8 ohm that matches the im pedance of the connected Loudspeak ers In the event that some of the Loudspeakers in the system are of different impedance...

Page 16: ...es to make accurate readings The MC207 can deliver the best possible perfor mance from any type of high quality Loudspeaker System Technical Description Inside View of the MC207 Creating an amplifier with this level of performance did not come easily Many months of design testing and mea suring were required Extensive controlled listening tests the ultimate form of measuring were made before the f...

Page 17: ... loudspeaker the MC207 Output Cir cuitry utilizes a multi plicity of power output transistors Refer to fig ure 14 An automatic tracking bias system completely eliminates any trace of crossover distortion Precision metal film resistors and low dielectric absorption film capacitors are used in all critical circuit loca tions Figure 13 Block Diagram of the Amplifiers and Meter Circuitry One of Seven ...

Page 18: ...ooling No fans are needed Refer to figure 16 Protection Circuits The MC207 incorporates its version of the McIntosh Sen try Monitor out put transistor protection cir cuit Refer to figure 17 There is absolutely no compromise in sonic perfor mance with this circuit and it ensures safe op eration of the amplifier under even the most extreme operat ing conditions The different types of protec tion cir...

Page 19: ...ower Guard is not limited to just the rated power output but will actually produce distortion free output well above its rated power due to the McIntosh philosophy of conservative design Figure 20 With Power Guard Power Supply Circuits To compliment the design of the MC207 there is a high current power supply for the seven power amplifier chan nels Refer to figure 21 The very large Power Transfome...

Page 20: ... Control Center When the A V Control Center is switched On a digital 1 5V signal operates the power relay in the MC207 The MC207 also has a remote Power Control input for Zone B operation two of the seven channels ...

Page 21: ...21 Notes ...

Page 22: ... 112dB below rated output Intermodulation Distortion Maximum Intermodulation Distortion if instanta neous peak output per channel does not exceed twice the rated output for any combination of fre quencies from 20Hz to 20 000Hz with all channels operating is 0 005 for 4 or 8 ohm loads Input Impedance 20 000 ohms Balanced 10 000 ohms Unbalanced Wide Band Damping Factor Greater than 60 at 4 ohms Grea...

Page 23: ...pment must be packed exactly as shown below It is very important that the four plastic feet are at tached to the bottom of the equipment Four 1 4 20 x 2 1 2 inch screws and washers must be used to fasten the unit securely to the bottom pad and shipping skid This will en sure the proper equipment location on the bottom pad Fail ure to do this will result in shipping damage Use the original shipping...

Page 24: ...cIntosh 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 S A ...

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