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14

Banana plug connection:

Insert the banana plug into the hole at the top of 

the terminal. Refer to figures A and B.

Note: Banana Plugs are for use in the United 

States and Canada only.

When making Loudspeaker Connections to the 

MC2301 refer to the Connection Diagram on the next 

page. This is an example of a typical audio system, 

your system may vary from this, however the actual 

Loudspeaker would be connected in a similar manner.

7. Connect the Loudspeaker hookup cables from a 

single Loudspeaker to the output terminals that 

match the impedance of the Loudspeaker, being 

careful to observe the correct polarities. Output 

impedance connections of 2 ohms, 4 ohms and 8 

ohms are provided. If the Loudspeaker’s imped-

ance is in-between the available connections, use 

the nearest lower impedance connection.

WARNING: Loudspeaker terminals are hazard-

ous live and present a risk of electric 

shock.

8. Connect the MC2301 Power Cord to a live AC 

outlet.

5. This McIntosh MC2301 Tube Power Amplifier 

is designed for the connection of a single Loud-

speaker with an impedance of 2 ohms, 4 ohms or 

8 ohms.

Note: The remaining Loudspeaker Terminals on the 

Amplifier should not be connected to another 

Loudspeaker.

6. Prepare the Loudspeaker Hookup Cables that 

attach to the Amplifier by choosing one of the 

methods below:

Bare wire cable ends:

Carefully remove sufficient insulation from the 

cable ends, refer to figures 1, 2 & 3. If the cable 

is stranded, 

carefully 

twist the 

strands 

together as 

tightly as possible.

Note: If desired, the 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-

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. Refer to figures 4, 5 & 6.

Caution: The supplied AC Power Cord should not 

be connected to the Rear Panel of the 

MC2301 Tube Power Amplifier until after 

the Loudspeaker Connections have been 

made. Failure to observe this could result 

in Electric Shock. For additional instruc-

tion on making Loudspeaker Connections 

contact your McIntosh Dealer or McIn-

tosh Technical Support.

1. For Remote Power Control, connect a power control 

cable from the Control Center or Preamplifier 

Power Control Out to POWER CONTROL IN on 

the McIntosh MC2301 Power Amplifier.

2. Connect a power control cable from the McIntosh 

MC2301 Power Amplifier POWER CONTROL 

Out to the Power Control In on the McIntosh Power 

Amplifier Two.

3. Connect a cable from the Balanced Output of a 

McIntosh Preamplifier or Control Center to the 

BALANCED INPUT on the McIntosh MC2301 

Power Amplifier.

4. Connect a cable from the BALANCED INPUT/

OUTPUT of the McIntosh MC2301 Power Ampli-

fier to the BALANCED INPUT on the McIntosh 

Power Amplifier Two. Place the MC2301 INPUT 

MODE Switch in the BALANCED Position.

When connecting Loudspeakers to the MC2301 it 

is very important to use cables of adequate size, so 

there is little to no power loss in the cables. The size is 

specified in Gauge Numbers or AWG (American Wire 

Gauge). The smaller the Gauge number, the larger the 

wire size:

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Loudspeaker Cable Distance vs Wire Gauge Guide

Loudspeaker 

Impedance

25 feet

(7.62 meters)

or less

50 feet

(15.24 meters)

or less

100 feet

(30.48 meters)

or less

2 Ohms

12AWG

10AWG

8AWG

4 Ohms

14AWG

12AWG

10AWG

8 Ohms

16AWG

14AWG

12AWG

How to Connect for Bi-Amp

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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