Listening to Your Stereo
Performance Limits
LISTENING TO A STEREO RECORD
Turn the INPUT SELECTOR to PHONO 1 and
PHONO 2, whichever is connected to the record
player you wish to hear.
Make certain the MODE SELECTOR is in the
STEREO or STEREO REVERSE position.
Adjust the VOLUME control to desired volume.
LISTENING TO A MONOPHONIC RECORD
Turn the INPUT SELECTOR to PHONO 1 or
PHONO 2, whichever is connected to the record
player you wish to hear.
Turn the MODE SELECTOR to MONO (L + R).
Adjust the VOLUME control to desired volume
LISTENING TO A STEREO TAPE RECORDER
Turn the INPUT SELECTOR to TAPE.
Set the MODE SELECTOR to STEREO or MONO,
depending on the program on the tape.
Adjust the VOLUME control to desired volume.
TO RECORD ON A STEREO TAPE RECORDER
All program sources are available at the TAPE
OUTPUT jacks. The program material is unaffected
by all front panel controls except the INPUT SELEC-
TOR.
To monitor while recording, the tape recorder must
have separate record and playback or monitor heads.
The TAPE switch permits monitoring the tape re-
cordings while in the process of recording. When
the TAPE switch is at at the MONITOR position it
will play the sound from the tape as it passes the
playback head, a moment after it is recorded. The
recording process continues as usual. When the
TAPE switch is at the NORMAL position the program
being recorded is heard.
LISTENING TO TAPE DECKS
To listen to tape from a tape deck, proceed as
follows:
Turn the INPUT SELECTOR to TAPE HD.
Turn the MODE SELECTOR to MONO (L + R) or
STEREO, depending on the program on the tape.
Adjust the VOLUME control to the desired volume.
LISTENING TO HEADPHONES
The HEADPHONE jacks have been designed to
feed low impedance dynamic headphones. Electro-
static headphones generally require higher power
than dynamic headphones. They must be connected
to the LEFT and RIGHT OUTPUT barrier strips on
the back of the MA 5100.
Performance Limits are the maximum deviation
from perfection permitted for a Mclntosh instrument.
We promise you that your MA 5100 must be capable
of performance at or exceeding these limits or you
get your money back. Mclntosh is the only manufac-
turer that makes this guarantee.
POWER OUTPUT
45 RMS watts continuous per channel into 4 or 8
ohms both channels operating 20 Hz to 20,000 Hz.
30 RMS watts continuous per channel into 16 ohms
both channels operating 20 Hz to 20,000 Hz.
HARMONIC DISTORTION
Does not exceed 0.25% at rated power output
from 20 Hz to 20,000 Hz with both channels oper-
ating. Typical performance is less than 0.1% at
rated power. Distortion decreases as output power
is reduced.
INTERMODULATION DISTORTION
Does not exceed 0.25% if instantaneous peak
power output is twice rated power or less per
channel with both channels operating for any
combination of frequencies 20 Hz to 20,000 Hz.
OUTPUT IMPEDANCE
4, 8, or 16 ohms
DAMPING FACTOR
50 with 4 ohms load, 100 with 8 ohms load, 200
with 16 ohms load
FREQUENCY RESPONSE
10 Hz to 20,000 Hz +0 —0.5 db at rated power
8 Hz to 50,000 Hz +0 —3.0 dB at rated power
INPUT IMPEDANCE
Auxiliary, TAPE, TUNER, and TAPE MONITOR:
250,000 ohms
PHONO 1 and PHONO 2: 47.000 ohms
TAPE HEAD: 500,000 ohms
INPUT SENSITIVITY
Auxiliary, TAPE, TUNER, and TAPE MONITOR:
0.3 volts
PHONO 1 and PHONO 2: 2 mV
TAPE HEAD: 2 mV
TOTAL NOISE
TOTAL NOISE (INCLUDING POWER AMPLIFIER)
Auxiliary, TAPE, TUNER, and TAPE MONITOR: 75
dB below rated output
PHONO 1, PHONO 2 and TAPE HEAD: 70 dB be-
8
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