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The McIntosh Model MC-30 is a 30 watt high fidelity power amplifier designed for home en-
tertainment s y s t e m s and p r o f e s s i o n a l applications. The Model MC-30 is similar to the earlier
McIntosh Model A-116 30 watt amplifiers and includes all of the rigid electrical specifications
and features found in these earlier units plus: less than 1 / 3 % harmonic distortion at any power
output up to 30 watts and at any frequency in the audio spectrum, 20 to 20,000 cps; less than
1/2% intermodulation distortion if instantaneous peak power is below 60 watts for any combin-
ation of frequencies 20 to 20, 000 cps; and noise and hum level 90 db or more below rated o u t p u t .
The famous McIntosh high efficiency output circuit is used to obtain the high standard of per-
formance found in this amplifier.
The MC-30 maybe operated from any signal source d e l i v e r i n g 0. 5 or more volts, or d i r e c t l y
from a McIntosh Audio Compensator or Pre-Amplifier, such as the Models C-8, C-4, C-104,
or C-108. Output impedances of 4, 8 and 16 ohms are provided for direct connection to loud-
speakers. Additional outputs for 166 ohms (70.7 volts) and 600 ohms are provided for use with
multiple speaker systems, lines, etc.
Location
The MC-30 should be located in a ventilated area. If the amplifier is housed in a cabinet or
other enclosure, holes should be provided for air c i r c u l a t i o n .
Input Connections
1. When a McIntosh Audio Compensator or other McIntosh p r e - a m p l i f i e r is used with the
MC-30, plug the pre-amplifier's output-power cord into the " P r e - A m p input" receptacle on the
MC-30 and turn the "gain" control fully counter clockwise. This receptacle supplies the re-
quired plate and filament power to the p r e - a m p l i f i e r e q u i p m e n t as well as providing the neces-
sary audio connection.
For pre-amplifier installation and operation refer to the p r e - a m p l i f i e r ' s i n s t r u c t i o n manual.
2, When a signal source of 0. 5 volts or more is used to drive the amplifier, such as the
output from a tuner, tape recorder, or pre-amplifier, plug the source into the "0. 5 volt input"
pin jack receptacle or connect to the "0.5 volt" and "GND" screw terminals.
control to obtain the desired operating level.
DESCRIPTION
INSTALLATION
Use the "gain"
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