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Performance Limits and Ratings
USEABLE SENSITIVITY
2.5 microvolts at 100% modulation (±75 kHz deviation)
for less than 3% total noise and harmonic distortion
SIGNAL TO NOISE RATIO
70 dB at 100% modulation
HARMONIC DISTORTION
Mono: 0.3% at 100% modulation ±75 kHz deviation
Stereo: 0.5% at 100% modulation ±75 kHz deviation
FREQUENCY RESPONSE
±1dB from 20 Hz to 15,000 Hz with standard de-emphasis
CAPTURE RATIO
1.5 dB
SPURIOUS REJECTION
90 dB IHF
IMAGE REJECTION
95 dB; 88 to 108 MHz (IHF)
STEREO SEPARATION
35 dB at 1000 Hz
SELECTIVITY
Adjacent Channel—6 dB IHF with SELECT button in
normal; 15 dB IHF with SELECT button at the IN
position
Alternate Channel—58 dB IHF with SELECT button in
normal; 88 dB IHF with SELECT button at the IN
position
TUNING INDICATOR
D'Arsonval movement meter
STEREO INDICATOR
Stereo light activated by 19,000 Hz pilot signal only
SENSITIVITY
75 microvolts at 1,000 kHz (using external antenna
input)
SIGNAL TO NOISE RATIO
45 dB
HARMONIC DISTORTION
1% at 30% modulation
FREQUENCY RESPONSE
Down 6 dB at 3,500 Hz
Performance limits are the maximum deviation from
perfection permitted for a Mclntosh instrument. We promise
you that the MX 113 you buy must be capable of perform-
ance at or exceeding these limits or you get your money
back. Mclntosh is the only manufacturer that makes this
guarantee.
FM
AM
ADJACENT CHANNEL SELECTIVITY
35 dB with SELECT button at the OUT position
45 dB with SELECT button at the IN position
IMAGE REJECTION
65 dB; 540 kHz to 1600 kHz
FREQUENCY RESPONSE
±0.5 dB, 20 to 20,000 Hz
DISTORTION
0.1% at 2.5 volts output, 20 to 20,000 Hz
INPUT SENSITIVITY
PHONO 1 and PHONO 2: 2 millivolts for 2.5 volts output
at 1,000 Hz
AUX and TAPE: 0.25 volts for 2.5 volts output
INPUT IMPEDANCE
PHONO 1 and PHONO 2: 47,000 ohms
AUX and TAPE: 250,000 ohms
VOLTAGE AMPLIFICATION
PHONO 1, PHONO 2 to MAIN output 62 dB, to TAPE
output 42 dB
AUX andTAPEtoMAINoutput20dB;to TAPE output 0dB
HUM AND NOISE
PHONO 1 and PHONO 2: 72 dB below 10 millivolt
input; equivalent to less than 3 microvolts at the input
terminals.
AUX and TAPE; 85 dB below 2.5 volts output, un-
weighted
BASS CONTROL
-18 dB to +16 dB at 20 Hz
TREBLE CONTROL
±20 dB at 20,000 Hz
LF FILTER
Flat or roll off below 50 Hz, down 12 dB at 20 Hz
HF FILTER
Flat or roll off above 5,000Hz, down 12 dB at 20,000 Hz
OUTPUT
Main: 2.5 volts with rated input. Up to 10 volts can be
developed without increase in distortion. FM and AM
will produce 10 volts output at 100% modulation.
Tape: 0.25 volts with rated input. Phono input signal of
10
PREAMPLIFIER
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