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4

Unpacking the MC75

Caution

To prevent damage to the MC75 

Tubes during shipping, there is a 

special foam insert surrounding the 

Tubes of the Power Amplifier.

The Foam Insert must be 

removed from the MC75 be-

fore connecting the AC Pow-

er Supply Cord to the power 

amplifier.

Failure to do so has the po-

tential of a Fire Hazard, 

resulting in damage to the 

MC75 and the surrounding 

environment. 

Follow these instructions for 

removal of the packing foam 

before connecting the AC 

Power Supply Cord to the 

MC75.

In order to remove the foam insert sur-

rounding the tubes on the MC75, it is necessary 

to temporarily remove the Tube Cover. After 

the foam insert is removed, the Tube Cover is 

re-installed and should not be removed. The 

cover provides protection from the hazardous 

voltages inside the MC75. The MC75 has no 

Figure 2

Tube Cover

user serviceable parts, including the tubes. If 

repairs are needed they must be performed by 

an authorized McIntosh Service Agency.

1. Orient the MC75 so the Front is facing you and 

remove the Warning Sheet. Refer to figure 1.

2. Using a Philips Head #2 screw driver, remove the 

Tube Cover Screw securing the Tube Cover to the 

chassis on each side of the MC75. Refer to figure 

2. Carefully lift up and remove the Tube Cover 

from the MC75. Refer to figure 3.

3. Place the Tube Cover and the previously removed 

chassis screws in a safe location, as the Tube 

Cover will be reinstalled.

Figure 1

Tube Cover

Remove Foam 

Insert located 

under the Tube 

Cover

4. Carefully lift up and remove the Foam Insert from 

the MC75 exposing the Tubes. Refer to figures 4 

and 5.

5. Carefully reinstall the previously removed Tube 

Cover using a Tube Cover Screw on each side of 

the MC75. Refer to figures 6, 7A, 7B and 8.

Note: Only use the chassis screws supplied with the 

MC75. If you can not find the chassis screws, 

contact the McIntosh Parts Department for 

replacements.

6. Save the Foam Insert and Warning Sheet with the 

MC75 Shipping Carton for possible future use.

Remove the 

Warning Sheet

Tube Cover 

Screw

Tube Cover

Tube Cover 

Screw

TO AVOID A FIRE HAZARD, THE FOAM INSERT 

OVER THE VACUUM TUBES MUST BE REMOVED 

PRIOR TO CONNECTING THE A.C. MAINS POWER 

SUPPLY CORD AND OPERATING THIS PRODUCT.

WARNING

REFER TO PAGE 3 IN THE MC75 OWNER’S 

MANUAL FOR INSTRUCTIONS.

Содержание 60TH ANNIVERSARY SYSTEM - annexe 1

Страница 1: ...McIntosh Laboratory Inc 2 Chambers Street Binghamton New York 13903 2699 Phone 607 723 3512 www mcintoshlabs com MC75 60th Anniversary Tube Power Amplifier Owner s Manual...

Страница 2: ...d 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 particularl...

Страница 3: ...3 IMPORTANT INSTRUCTIONS FOR REMOVAL OF FOAM INSERT OVER THE VACUUM TUBES PRIOR TO CONNECTING THE A C POWER SUPPLY CORD START ON THE NEXT PAGE...

Страница 4: ...Sheet Refer to figure 1 2 Using a Philips Head 2 screw driver remove the Tube Cover Screw securing the Tube Cover to the chassis on each side of the MC75 Refer to figure 2 Carefully lift up and remov...

Страница 5: ...e at the top Refer to figure 9 Allow at least 12 inches 30 48cm above the top 4 inches 10 16cm for the Front Rear and Sides and 1 2 inches 1 27cm below the Power Amplifier so the airflow is not obstuc...

Страница 6: ...oncerning a suspected problem you can receive technical assistance for all McIntosh products at McIntosh Laboratory Inc 2 Chambers Street Binghamton New York 13903 Phone 607 723 1545 Fax 607 724 0549...

Страница 7: ...an 0 5 distortion Unity Coupled Circuitry The MC75 Power Amplifier uses the famous McIn tosh Patented Unity Coupled Circuit which provides low distortion extended frequency response and cool operating...

Страница 8: ...location for your MC75 16 1 2 41 91cm Front View of the MC75 Top View of the MC75 Left Side View of the MC75 Right Side View of the MC75 7 7 8 20 00cm 8 1 2 21 59cm 13 5 8 34 61cm 1 3 4 4 45cm 1 3 4 4...

Страница 9: ...xt Power Amplifier input OUTPUT Connections for a 2 4 or 8 ohm Loudspeaker Fuse holder refer to information on the side panel of your MC75 to determine the correct fuse size and rating 1 This Balanced...

Страница 10: ...Center to the MC75 BALANCED INPUT Place the INPUT MODE Switch in the BALANCED Position Note An optional hookup is to use an unbalanced cable and place the INPUT MODE Switch in the UNBALANCED Position...

Страница 11: ...11 How to Connect Preamplifier Connect to AC Outlet COM 2 4 8...

Страница 12: ...by Power On and Sentry Monitor Tube Protection Activation Indicator POWER Switch Turns AC Power ON or OFF STBY Standby INPUT MODE switch selects between balanced or unbalanced input INPUT SENSITIVITY...

Страница 13: ...r On To have the MC75 automatically turn On or Off when a Preamplifier or A V Control Center turns on or off place the Power Switch to OFF STBY Standby posi tion For manual operation place the Power S...

Страница 14: ...not exceed twice the rated power output for any combination of frequencies from 20Hz to 20 000Hz Wide Band Damping Factor Greater than 18 Input Impedance 20 000 ohms Unbalanced 15 000 ohms Balanced Tu...

Страница 15: ...location on the bottom foam pad Failure to do this will result in shipping damage To protect the tubes during shippment the Foam Insert removed from the MC75 needs to be re insert ed Follow the unpack...

Страница 16: ...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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