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McIntosh Laboratory, Inc. 2 Chambers Street, Binghamton, New York 13903-2699
Tel (607) 723-3512 • US Toll-Free (800) 538-6576 • Fax: (607) 724-0549• www.mcintoshlabs.com
For the Consumer’s Protection: In order to ensure the highest level of customer satisfaction, “new” McIntosh
products may only be purchased over-the-counter or delivered and installed by an Authorized McIntosh Dealer.
McIntosh products that are purchased over the Internet, by phone or mail order are presumed to be “used” and
do not qualify for any McIntosh Warranty. McIntosh does not warrant, in any way, products that are purchased
from anyone who is not an Authorized Dealer or products that have had their serial number altered or defaced.
MR85
AM/FM Tuner
Dual-Tuner Operation
As an expansion option, a
McIntosh Dealer may add an
additional tuner module. This
is ideal for multizone systems,
because it creates two tuners
that can be used simultaneously.
Weighted Flywheel
For Manual Tuning
An optically encoded
weighted flywheel for “dialing
in” stations, reminiscent of the
smooth-acting flywheel found
in classic McIntosh tuners.
Custom Naming
All station presets for each
tuner may be labeled with a
name containing as many as
8 characters. For example,
FM preset 1 could be re-
named “JAZZ 1” or “WHRW.”
Spatializer Enhancement
This circuit can expand
the sound field for FM stations
that have poor separation, or
it can provide a pseudo-stereo
effect for AM stations.
DMOS-FET RF Amplifier
This circuit provides very
high sensitivity with
ultra-low distortion.
Linear Phase,
Piezoelectric If Filters
Never requiring adjustment,
these filters – together with the
associated IF amplifier – provide
more than 120dB of gain and
selectivity greater than 90dB.
FM TUNER SPECIFICATIONS
USEABLE SENSITIVITY
14dBf (1.4uV across 75 ohms)
50dB QUIETING SENSITIVITY
Mono: 19dBf
(2.4uV across 75 ohms)
Stereo: 35dBf
(15uV across 75 ohms)
SIGNAL-TO-NOISE RATIO
Mono: 75dB
Stereo: 70dB
FREQUENCY RESPONSE
Mono: 20Hz to 15kHz, +0/-1dB
Stereo: 20Hz to 15kHz, +0/-1dB
HARMONIC DISTORTION
Mono: 0.3% at 100Hz,
1kHz and 10kHz
Stereo: 0.45% at 100Hz and 1kHz;
0.65% at 10kHz
INTERMODULATION DISTORTION
Mono: 0.25%
Stereo: 0.45%
CAPTURE RATIO
1.2dB
ALTERNATE CHANNEL SELECTIVITY
75dB
SPURIOUS RESPONSE
100dB
IMAGE RESPONSE
75dB
RF INTERMODULATION
65dB
STEREO SEPARATION
45dB at 100Hz and 1kHz
35dB at 10kHz
SCA REJECTION
65dB
10.03.MR85.20k.JCP 35003700.RevA
AM TUNER SPECIFICATIONS
SENSITIVITY
20uV (external antenna input)
SIGNAL-TO-NOISE RATIO
48dB at 30% modulation
58dB at 100% modulation
FREQUENCY RESPONSE
Mono: 20Hz to 15kHz, +0/-1dB
Stereo: 20Hz to 15kHz, +0/-1dB
HARMONIC DISTORTION
0.5% max at 50% modulation
FREQUENCY RESPONSE
50Hz to 6kHz NRSC
ADJACENT CHANNEL SELECTIVITY
45dB minimum IHF
IMAGE REJECTION
65dB min, 540 kHz to 1600kHz
IF REJECTION
80dB minimum
GENERAL
RATED OUTPUT
1.2V Fixed
0-1.2V Variable
OUTPUT IMPEDANCE
Less than 100 ohms
POWER REQUIREMENTS
120V 50/60Hz, 20W
OVERALL DIMENSIONS (H X W X D)
5 3/8" (13.8 cm) x 17 1/2"
(44.5 cm) x 17 1/2" (44.5 cm)
WEIGHT
25.5 lbs. (11.6 kg) net
43 lbs. (19.5 kg) boxed