23
music demands and guarantees an excellent signal to noise
ratio. Refer to figure 27.
The MC2KW Output Module contains the low voltage
regulated power supplies for each of the MC2KW Power
Modules and for the Input Audio circuitry located inside the
MC2KW Output Module. Refer to figure 28. The special
“R” core transformer supplies the necessary voltage/current
for the low voltage regulated circuitry and is housed in a
shielded enclosure. Refer to figure 29.
Most
owners de-
sire one
power
switch for
the whole
audio sys-
tem. The
MC2KW
Power Am-
plifier is
equipped
with a cir-
Technical Description, con’t
Figure 27
Figure 28
Figure 30
cuit that provides remote Power Control from a McIntosh
Preamplifier or A/V Control Center. When the Preamplifier
or A/V Control Center is switched On a digital “1” (+5V)
signal changes the operational state of digital control cir-
cuitry and a DC voltage is sent to each MC2KW Power
Module to activate the power relay. The two MC2KW
Power Modules return an acknowledgment signal to the
digital control circuitry and the MC2KW Output Module is
then allowed to switch On. Refer to figure 30.
The MC2KW Power Amplifier also has a remote Power
Control Out Jack. The Power Control signal from this jack
is 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 important feature
when mutiple MC2KW Power Amplifiers are used.
Figure 29