Instruction manual

ManualsBrandsMcIntosh ManualsAmplifier352

6

7

8

9

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

4

ohms

8

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 is 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.

-3-