McIntosh MA5100 User Manual

cision tracked throughout the listening range (0 to
—65 dB) for accurate stereo balance.
MODE SELECTOR: Connects the input program to
the loudspeaker in any of the following seven ways:
L to L & R: Connects the left input to both loud-
speakers.
R to L & R: Connects the right input to both loud-
speakers.
STEREO REV: Connects the left input to the right
loudspeaker and the right input to the left loud-
speaker.
STEREO: Connects the left input to the left loud-
speaker and the right input to the right loud-
speaker.
MONO (L + R): adds the left input and the right
input and then connects the L + R program to
both loudspeakers.
L + R to L: Connects the left plus right program
to the left loudspeaker only.
L + R to R: Connects the left plus right program
to the right loudspeaker only.
COMPensation
Use the COMP switch to correct for phono equali-
zation introduced in the recording process. All cur-
rent stereo recordings use RIAA equalization. Some
early stereo and mono recordings use LP equaliza-
tion.
TAPE: The TAPE switch makes it possible to instan-
taneously compare recorded material with the signal
source. Tape jacks on the back panel are designed
to accept a signal from a tape recorder with a moni-
tor head and preamplifier.
NORMAL . . . the program source is fed through
the power amplifiers and the loudspeakers.
MONITOR . . . the signal source becomes the re-
corded tape and is fed through the power pre-
amplifiers and loudspeakers.
When the switch is in the MONITOR position a tri-
angle is lighted above the switch. When the light is
on only the tape can be heard. To listen normally
the light must be off.
PHASE: Electronically reverses phase in the left
channel to correct "out of phase" program sources.
SPEAKER: For private listening on headphones the
loudspeakers can be turned off. When the switch is
in the OFF position a triangle is lighted above the
switch. When the light is on sound will not be heard
from the speakers. Only the headphones will be
heard.
POWER: The POWER switch controls the AC input
power. It turns the MA 5100 on and off. The switch
also controls the three black AC outlets on the back
panel.
L. F. (LOW FREQUENCY FILTER): Use the L. F. filter
switch to reduce objectionable low-frequency noise
6

McIntosh MA5100 Specifications

General

Frequency Response	20Hz to 20kHz
Input Sensitivity (MM)	2.5 mV
Signal to Noise Ratio (MM)	70 dB
Signal to Noise Ratio (Line)	80dB
Output Impedance	4, 8, 16 ohms
Input Impedance (Line)	250k ohms
Input Impedance (MM)	47k ohms
Total Harmonic Distortion	0.5%
Input Sensitivity (Line)	250 mV
Type	Solid State Integrated Amplifier
Power Output	45 watts per channel