McIntosh Mac 1700, Руководство пользователя

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TECHNICAL FEATURES AND SPECIFICATIONS FOR MAC 1700
FM TUNER SECTION:
USEABLE SENSITIVITY (at 100% Modulation: 2.5 µV
[I.H.F. Standards)
SIGNAL TO NOISE AND HUM RATIO: 65db.
HARMONIC DISTORTION: Mono, less than . 5 %
Stereo, less than . 8 %
DRIFT: Less than 25KC
FREQUENCY RESPONSE: Flat from 20 cps to 20KC
with standard 75 µ second de-emphasis and 19KC
pilot frequency filter.
CAPTURE RATIO: Better than 2.0db.
IMAGE REJECTION: Better than 60db.
STEREO MULTIPLEX SEPARATION: Better than 30db
at 1KC.
SPECIAL FEATURES:
A) Automatic stereo switching.
B) M u t i n g ; IF injected circuit with at least 5 0 d b
quieting between stations.
C) Antenna inputs for 3 0 0 ohm balanced (for twin
lead) and 75 ohm unbalanced (for coaxial cable).
D) Nuvistor RF amplifier, Nuvistor mixer.
E) Four stages of IF amplification, with A G C used
to insure limiting occurs only in the limiter stages.
F) Two limiter stages used for exceptional capture
ratio and smooth muting operation.
G) Multiplex filter and SCA filter, to suppress 19KC
and 38KC signal components at least 4 0 d b be-
low program and to suppress 67KC SCA by 6 0 d b .
H) Noise rejecting logic circuit used to activate
MPX stereo light and automatic stereo switching
on 19KC stereo pilot only.
I) D'Arsonval tuning meter for accurate center of
channel tuning.
J) Flywheel tuning for ease of operation and pre-
cise tuning.
AMPLIFIER SECTION:
POWER OUTPUT:
40 watts RMS continuous per channel with both chan-
nels operating simultaneously into 4 ohm or 8 ohm
loads.
80 watts RMS continuous monophonic.
30 watts RMS continuous per channel with both chan-
nels operating simultaneously into 16 ohm loads.
60 watts RMS continuous monophonic.
HARMONIC DISTORTION: Less than 0.25% at rated
power output from 30 cps to 20KC with both chan-
nels operating.
INTERMODULATION DISTORTION: Less than 0.25%
for any combination of frequencies from 30 cps to
20KC if instantaneous peak power is 80 watts per
channel or less into 4 or 8 ohm loads and 60 watts
per channel or less into 16 ohm loads with both
channels operating.
FREQUENCY RANGE: At rated output both channels:
± 0.5db 20 cycles through 20,000 cycles.
+ 0, - 3db 10 cycles through 80,000 cycles.
OUTPUT IMPEDANCE: 4 ohms, 8 ohms, 16 ohms, no
impedance switching required.
INTERNAL IMPEDANCE DAMPING: Less than .04
ohms; damping factor greater than 100.
INPUT SENSITIVITY AND IMPEDANCE: Auxiliary,
Tape, Tuner, and Tape Monitor; 300 MV, 250K
ohms.
PHONO 1 AND PHONO 2: 2.4 MV, 47,000 ohms.
TAPE HEAD: 2.4 MV, ½ megohm.
TOTAL NOISE (Including Power Amplifier):
High Level Inputs: 75db below rated output.
Low Level Inputs: 76db below 10 MV input; equiv-
alent to less than 1.5 microvolts at input.
POWER AMPLIFIER: 90db below rated output.
TAPE OUTPUT: Tuner 1.5 volts, other inputs 300 MV at
rated sensitivity, 1.3 volts with 1 0 MV at phono input.
BASS CONTROLS: ± 1 8db at 20 cycles, with friction
clutch for independent adjustment for each channel.
TREBLE CONTROLS: ± 1 8 d b at 20,000 cycles with
friction clutch for independent adjustment of each
channel.
TAPE MONITOR SWITCH: Normal or Tape Monitor,
indicator lamp lights in "Monitor" position.
SPEAKER SWITCH: Speakers ON or OFF for head-
phone listening.
FILTER: Flat or 5,000 cycle and 60 cycle cutoff at 12db
per octave.
LOUDNESS SWITCH: Normal or compensated.
HEADPHONE JACK: For low impedance stereo head-
phones.
INPUT SELECTOR: 6 positions; AUX, TAPE, TUNER,
PHONO 1, PHONO 2, TAPE HD.
MODE SELECTOR: Two positions; Mono-Stereo
SEMICONDUCTOR COMPLEMENT:
Preamplifier 16 Silicon Transistors
Power Amplifier 1 8 Silicon Transistors
12 Diodes
FM TUNER
8 Tubes, 4 Transistors, 1 0 Diodes
Power Supply 8 Rectifiers
1 Zener Diode, 1 Transistor
POWER REQUIREMENTS: 1 1 7 volts, AC, 50/60 cycles,
70-270 watts
MECHANICAL SPECIFICATIONS:
SIZE: Front panel, 16 inches wide by 5½ inches high;
Chassis, 15 inches wide by 5
1
/
8
inches high by 14½
inches deep, including connectors. Clearance in front
of mounting panel including knobs, 1 ½ inches.
WEIGHT: 34 pounds net, 47 pounds in
shipping carton.
FINISH: Front Panel, Anodized gold and black.
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