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11

Rear Panel Connections and Switch

Connect the MC2301 

power cord to a live AC 

outlet. Refer to the rear 

panel to determine the 

correct voltage

POWER CONTROL IN receives a turn On/

Off signal from a McIntosh component and the 

POWER CONTROL OUT sends a turn On/Off 

signal to the next McIntosh Component

UNBALANCED INPUT 

for an audio cable from a 

Preamplifier or A/V Con-

trol Center audio output

INPUT MODE switch 

selects between balanced 

or unbalanced input

BALANCED INPUT 

for an audio cable 

from a Preamplifier 

or A/V Control Cen-

ter audio output

BALANCED INput

1

 / OUTput 

for an audio cable from a Pre-

amplifier

 

output or to connect an 

audio cable on to the next Power 

Amplifier input

1

 This Balanced connector may be 

used as an Input ONLY when 

connected to a McIntosh C1000 

Preamplifier. For all other con-

nections use only as an Output.

OUTPUT Connections 

for 2 ohm Loudspeaker

OUTPUT Connections 

for 4 ohm Loudspeaker

OUTPUT Connections 

for 8 ohm Loudspeaker

Main Fuse holder, 

refer to information 

on the back panel 

of your MC2301 to 

determine the cor-

rect fuse size and 

rating

Caution: The Loudspeaker       Negative Connections are above chassis 

ground. Do not combine any connections together, ground them 

or connect with another MC2301 or other Power Amplifier.

Summary of Contents for MC2301

Page 1: ...McIntosh Laboratory Inc 2 Chambers Street Binghamton New York 13903 2699 Phone 607 723 3512 www mcintoshlabs com MC2301 Tube Power Amplifier Owner s Manual...

Page 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...

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

Page 4: ...Tube Cover to the chassis on both sides of the MC2301 Refer to figure 2 Also remove the two screws securing the rear of the Tube Covers to the bracket Refer to figure 7B on the next page 3 Carefully l...

Page 5: ...on holes on the bottom of the amplifier and a means for the warm air to escape at the top Refer to figure 9 and the information on the next page for placement and installation of the MC2301 Ventilatio...

Page 6: ...art of your system If you or your Dealer wish additional help concerning a suspected problem you can receive technical assistance for all McIntosh products at McIntosh Laboratory Inc 2 Chambers Street...

Page 7: ...ry The MC2301 is fully balanced from input to output It consists of two matched Power Amplifiers operating in push pull using the famous McIntosh Patented Uni ty Coupled Circuit The circuit outputs ar...

Page 8: ...ion for your MC2301 Dimensions Front View of the MC2301 Rear View of the MC2301 Side View of the MC2301 17 3 4 45 09cm 11 27 94cm 12 5 16 31 27cm 20 50 86cm 21 54 61cm 3 16 0 48cm 10 1 2 26 70cm 15 3...

Page 9: ...per ating temperature A custom cabinet installation should provide the fol lowing minimum spacing dimensions for cool opera tion Allow at least 12 inches 30 48cm above the top 2 inches 5 08cm below th...

Page 10: ...10 Notes...

Page 11: ...en ter audio output BALANCED INput1 OUTput for an audio cable from a Pre amplifieroutput or to connect an audio cable on to the next Power Amplifier input 1 This Balanced connector may be used as an I...

Page 12: ...twisted ends can be tinned with solder to keep the strands together or attach spade lug and or banana connector Spade lug or prepared wire connection Insert the spade lug connector or prepared sec ti...

Page 13: ...13 How to Connect Loudspeaker Preamplifier Connect to AC Outlet...

Page 14: ...tion 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 wi...

Page 15: ...15 Loudspeaker How to Connect for Bi Amp Preamplifier Connect to AC Outlet Power Amplifier Two...

Page 16: ...er On and Sentry Monitor Tube Protection Activa tion Indicator Meter indicates the Power Output of the Amplifier POWER Switch Turns AC Power On Off or On Remote METER Switch selects the display modes...

Page 17: ...cIntosh A V Control Center or Preamplifier with Remote Meter Illumination Control the Meter Illumination will automatically be remotely controlled On Off with the METER Switch set to the WATTS or HOLD...

Page 18: ...udspeaker system Creating a tube amplifier with this level of perfor mance did not come easily Many months of design testing and measuring were required Extensive con trolled listening tests the ultim...

Page 19: ...re 13 The output signals of the two matched Patented Unity Coupled Circuit Power Amplifiers operate in a push pull balanced circuit and are coupled together in the unique McIntosh MC2301 Dual Core Out...

Page 20: ...in the event of an improper load mismatched impedance shorted loudspeaker cable or if a Power Output Tube should fail During normal operation there is absolutely no compromise in sonic perfor mance w...

Page 21: ...jack is delayed by a fraction of a second so that the turn on power surge of the next power ampli fier occurs at a later time This helps prevent power circuit overload that could trip circuit breaker...

Page 22: ...does not exceed twice the rated power output for any combination of frequencies from 20Hz to 20 000Hz Wide Band Damping Factor Greater than 15 Input Impedance 47 000 ohms Tube Compliment 2 12AT7 Volta...

Page 23: ...ached to the bottom of the equipment This will ensure the proper equipment location on the bottom foam pad Failure to do this will result in shipping damage To protect the tubes during shippment the t...

Page 24: ...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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