McIntosh MC601 Owner's Manual page 17

Block Diagram
of the
Power Supply
BACKUP
POWER SUPPLY
AC Power
Figure 23
power supply. Refer to figures 22 and 25. The very
large Power Transfomer can supply over 13 amps of
current. Refer to figure 23 (golf ball is for size com-
parsion).
It is enclosed in the legendary McIntosh Potted En-
closures and weighs 28 lbs. The two super size main
filter capacitors can store over 140 Joules of energy
which is necessary for the wide dynamic range that
"Digital Audio" demands. Refer to figure 24.
POWER
CONTROL
LIGHTING
CONTROL
CONTROL
LOGIC
INRUSH
CURRENT
MAIN RELAYS
LIMITER
Figure 22
The power amplifier draws high current from the AC
power line. Therefore, it is important that they plug
directly into the wall outlet.
Also, most owners desire one power switch for the
whole audio system. The MC601 is equipped with
Figure 24
Technical Description, con't
a circuit that provides remote Power Control from
a McIntosh A/V Control Center. Refer to figure 25.
Figure 25
When the A/V Control Center is switched On, a (+5V)
signal operates the power relay in the MC601. The
MC601 also has two remote Power Control Out Jacks.
The Power Control signal from these jacks are delayed
by a fraction of a second so that the turn on power
surge of the next power amplifier occurs at a later
time. This helps prevent power circuit overload that
could trip circuit breakers or blow fuses, a very impor-
tant feature in a high power Home Systems employing
multiple MC601 Power Amplifiers.
17