The Mclntosh MR 75
AM-FM Stereo Tuner is a superb tuner using the latest high technology circuits.
This fine tuner will discover more FM stations with good quality than ever
before.
FM AUTOMATIC
FREQUENCY LOCK
The Automatic
Frequency Lock (AFL) is a patented Mclntosh circuit that activates when you
tune to the center frequency of an FM station. When the center ON-STATION
vertical LED indicator lights, there will be no drift from accurate tuning,
insuring minimum distortion and best performance.
AUTOMATIC STEREO
NOISE SUPPRESSION
When listening to
weak or distant FM stations, optimum stereo separation and signal to noise
ratio is automatically provided by a third generation phase locked loop stereo
decoder.
UNIQUE AM TUNER
SECTION
The AM tuner's
design is unique for a superheterodyne receiver. It has constant selectivity,
constant sensitivity and high image rejection across the band. There is no loss
of frequency response at the low end of the band, the only AM circuit with all
these performance features.
PERFORMANCE LIMITS
AND RATINGS FM SECTION
TUNING: 88 to 108 MHz
ANTENNA INPUTS: One 300W balanced and one 75W unbalanced.
INTERMEDIATE
FREQUENCY: 10.7 MHz
USABLE
SENSITIVITY: 2mV (11.2 dBf) IHF
QUIETING
SENSITIVITY:
5mV (19.1 dBf) IHF
-50 dB (Mono)
50mV (39.5 dBf) IHF
-50 dB (Stereo)
SIGNAL TO NOISE
RATIO: 70 dB IHF minimum both Mono and
Stereo
HARMONIC DISTORTION:
0.18% (Mono) IHF
maximum
0.38% (Stereo) IHF
maximum
ALTERNATE CHANNEL
SELECTIVITY: 75 dB IHF minimum
IMAGE
REJECTION: 100 dB IHF minimum
STEREO
SEPARATION: 45 dB minimum at 1 kHz
AUDIO FREQUENCY
RESPONSE: 20 Hz to 15 kHz +0, -1 dB
CAPTURE RATIO: 1.8 dB
SELECTIVITY: 75 dB IHF minimum
SPURIOUS
REJECTION: 100 dB IHF minimum
SCA REJECTION: 60 dB minimum
AM SECTION
SENSITIVITY: 75mV IHF with external antenna
SIGNAL TO NOISE
RATIO: 45 dB minimum IHF or 55 dB at
100% modulation
FREQUENCY
RESPONSE: + 0 -6 dB from 20 Hz to 3500
Hz
HARMONIC
DISTORTION: 0.8% maximum at 30%
modulation
ADJACENT CHANNEL
SELECTIVITY: 30 dB minimum IHF
IMAGE
REJECTION: 65 dB minimum from 550 kHz to
1600 kHz
GENERAL INFORMATION
AUDIO OUTPUT:
Variable: 2.5V into 47kW
Fixed: 1V into 47kW
AUDIO HUM: 75 dB down from 100% modulation
POWER
REQUIREMENT: 120 Volts 50/60 Hz, 20
Watts
SEMI CONDUCTOR
COMPLEMENT:
22 Bipolar
Transistors
4 Field Effect
Transistors
23 Silicon Diodes
15 Integrated
Circuits
19 LED's
2 Bridge Rectifiers
MECHANICAL
INFORMATION
SIZE:
Front panel measures
16 inches wide (40.6 cm) by 5 7/16 inches high (13.8 cm). Chassis measures 14
3/4 inches wide
(37.5 cm) by 4 13/16 inches high (12.2 cm) by 13 inches deep (33 cm), including
connectors.
Knob clearance
required is 1 1/4 inches (3.2 cm) in front of mounting panel.
FINISH: Front panel is anodized gold and black with
special gold/teal nomenclature illumination. Chassis is black.
MOUNTING: Exclusive Mclntosh developed professional
PANLOC
WEIGHT (net): 10,43 kg (23 pounds)
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