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8

WARNING: Loudspeaker terminals are hazard-

ous live and present a risk of electric 

shock. For additional instruction on 

making Loudspeaker Connections con-

tact your McIntosh Dealer or McIn-

tosh Technical Support.

13. Attach the Terminal Connections Cover to the 

MC611 Rear Panel with the previously removed 

Screws. Refer to figure 6.

14. Connect the MC611 power cord to an active AC 

outlet.

ance connection. Refer to “General Information” Note 

3 on page 2 for additional information.

WARNING: Loudspeaker terminals are hazardous 

live and present a risk of electric shock. 

For additional instruction on making 

Loudspeaker Connections contact your 

McIntosh Dealer or McIntosh Techni-

cal Support.

9. Attach the Terminal Connections Cover to the 

MC611 Rear Panel with the previously removed 

Screws. Refer to figure 5.

10. Connect the MC611 power cord to an active AC 

outlet.

Spade Lug or Wire Connections:

11. Locate the Terminal Connections Cover from the 

inside of the MC611 shipping carton. Insert the 

just prepared Loudspeaker hookup cables thru the 

cover opening on the right side. Refer to figure 6.

12. Connect the Loudspeaker hookup cables to the 

MC611 Negative Output Terminal and Positive 

Output Terminal indentified as 2Ω (ohms), 4Ω 

(ohms) or 8Ω (ohms) connection to match the 

impedance of the Loudspeaker, being careful to 

observe the correct polarities. 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 terminals so the lugs or wire cannot slip out. 

Refer to figures 7 and 8.

Note: The illustration in figure 6 is connections for 

8Ω (ohms) Loudspeakers.

If the Loudspeaker’s impedance is in-between 

the available connections, use the nearest lower 

impedance connection. Refer to “General Informa-

tion” Note 3 on page 2 for additional information.

cover opening on the left side. Refer to figure 5.

6. Attach the previously prepared bare wire cable ends 

into the banana plugs and secure the 

connections. Refer to figure F.

7. Rotate the top of the Output Terminal 

Post clockwise until it is finger tight. 

Refer to figure G. Then using the Mc

-

Intosh Wrench, rotate the top of the 

Output Terminal one quarter of a turn 

(90° ). 

Do not over tighten.

 Refer to 

figure E.

8. Referring to figure H, connect the 

Loudspeaker hookup 

cables with banana plugs 

into the hole at the top of 

the MC611 Negative and 

Positive Output Terminals. 

The terminals are indenti-

fied as 2Ω (ohms), 4Ω (ohms) or 8Ω (ohms) connec

-

tion to match the impedance of the Loudspeaker, 

being careful to observe the correct polarities.

Note: The illustration in figure 5 is connections for 

8Ω (ohms) Loudspeakers.

If the Loudspeaker’s impedance is in-between the 

available connections, use the nearest lower imped-

Output Terminals and How to Connect

Figure 7

Figure 8

Figure F

Figure H

Figure F

Figure H

Figure G

Figure 5 (Inside USA and Canada)

Cover Screws

Cover

Cover Opening

Figure 6 (Outside USA and Canada)

Cover Openings

Cover Screws

Cover

Summary of Contents for MC611

Page 1: ...McIntosh Laboratory Inc 2 Chambers Street Binghamton New York 13903 2699 Phone 607 723 3512 www mcintoshlabs com MC611 Quad Balanced Power Amplifier Owner s Manual...

Page 2: ...mportant Additional Operation Information Guide Thank You and Please Take a Moment 2 Technical Assistance and Customer Service 2 Table of Contents 2 General Information 2 Connector and Cable Informati...

Page 3: ...n the amplifier output stages and speaker loads of 2 4 and 8 ohms The Autoformers also provide perfect DC protection for your valuable loudspeakers Balanced and Unbalanced Inputs Balanced connections...

Page 4: ...cation for your MC611 Dimensions Front View of the MC611 Rear View of the MC611 Side View of the MC611 17 1 2 44 45cm 8 7 8 22 54cm 9 7 16 23 97cm 11 3 4 29 85cm 16 13 16 42 70cm 20 3 16 51 27cm 3 16...

Page 5: ...per ating temperature A custom cabinet installation should provide the fol lowing minimum spacing dimensions for cool opera tion Allow at least 6 inches 15 24cm above the top 2 inches 5 08cm below the...

Page 6: ...ced or BALanced Input BALanced INput for audio cables from a Preamplifier or A V Processor audio output BALanced OUTput for an audio cable to the next Power Amplifier Input OUTPUT Connections for a 2...

Page 7: ...tion 2 When multiple MC611s are used in a Ste reo or Multichannel System match up the Preamplifier or A V Processor Channel Output designation to each MC611 with Loudspeaker and the Loudspeaker loca t...

Page 8: ...of the cable end into the terminal side access hole and tighten the terminal cap until the cable is firmly clamped into the terminals so the lugs or wire cannot slip out Refer to figures 7 and 8 Note...

Page 9: ...from the MC611 Rear Panel and temporarily place them in a safe place Refer to figure 1 This McIntosh MC611 Quad Balanced Power Ampli fier is designed for Loudspeakers with an impedance of 2 ohms 4 ohm...

Page 10: ...he right side Refer to figure 6 14 Connect the Loudspeaker hookup cables to the MC611 Negative Output Terminal and Positive Output Terminal indentified as 2 ohms 4 ohms or 8 ohms connection to match t...

Page 11: ...11...

Page 12: ...ndicator POWER Switch Turns AC Power Off Remote AC Power On METER Switch selects the display modes of the Power Output Meter and Meter Illumination Meter indicates the Output of the amplifier LED indi...

Page 13: ...this power level until a higher power peak passes through the amplifier The meter point er will then rise to the newer higher indication If no further power peaks are reached the meter pointer will v...

Page 14: ...cIntosh MC611 Output Autoformer It provides low distortion power transfer at frequencies from below 20Hz to well beyond 20 000Hz with optimum impedance points of two ohms four ohms and eight ohms The...

Page 15: ...th an Autoformer Its frequency re sponse exceeds that of the output circuit itself and extends well beyond the audible range Its distortion level is so low it is virtually impos sible to measure exper...

Page 16: ...he possibility of ever overdriving the ampli fier into clipping Refer to figures 20 21 and 22 An overdriven amplifier can produce both audible and inaudible distortion levels exceeding 40 The audible...

Page 17: ...fuses a very important feature in a high power Home Systems employing multiple MC611 Power Amplifiers which is necessary for the wide dynamic range that Digital Audio demands Refer to figure 25 Power...

Page 18: ...pedance 22 000 ohms Balanced 22 000 ohms Unbalanced Voltage Gain 29dB 8 Ohms 26dB 4 Ohms 23dB 2 Ohms Power Guard Less than 2 Total Harmonic Distortion with up to a 14dB overdrive signal Power Control...

Page 19: ...shipping damage Use the original shipping carton and interior parts only if they are all in good serviceable condition If a shipping carton or any of the interior part s are needed please call or writ...

Page 20: ...cts is the policy of McIntosh Laboratory Incorporated who reserve the right to improve design without notice Printed in the U S A McIntosh Laboratory Inc 2 Chambers Street Binghamton NY 13903 www mcin...

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