McIntosh C8 - SCHEMATICS Manuel d'utilisateur télécharger pdf (Page 4)

If desired, the signal source may be wired to an octal plug for insertion in the octal "Pre-Amp input" re-

ceptacle. In this case connect the input lead to pin

5 and the ground lead to pin

1. When using this con-

nection the source must not have a DC output component.

Output

Connections

The MC-30 has output impedances of

4, 8

and 16 ohms available at either the screw terminal connector

or the output socket. In addition, a 600 ohm output (balanced to ground) is available at the output socket.

See schematic diagram for socket connections.

It is important that the loudspeaker or other load be properly matched to the amplifier if best 'perform-

ance is to be obtained. Because many loudspeakers do not have voice coil impedances exactly matching

4, 8

and 16 ohms, the following table lists suggested connections for best impedance matching.

Speaker Impedance

3.2 to 6.5 ohms

6.5 to 13 ohms

13 to 32 ohms

Connect To

ohms

16 ohms

WARNING: Output plugs wired for McIntosh 20W-2 and 50W-2 amplifiers must not be used with

the MC-30 without rewiring the plug.

Power

Connections

The MC-30 operates from any 110 to 130 volt 50-60 cycles power line. (When continuous use

con-

templated on 120 to 130 line volts the transformer primary should be re-connected using the 125 volt tap.)

When the MC-30 is used with the McIntosh Pre-Amplifier equipment, tuners, or other associated equip-

ment the MC-30 power cord is plugged into the receptacle at the rear of these units. When thus connected

the power switch of these units controls the MC-30.

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McIntosh C8 - SCHEMATICS Manuel d'utilisateur Page 4