The MA 6200
is another fine expression of stereo engineering and craftsmanship by McIntosh.
The flexibility and high performance found in the MA 6200 are a result of
direct customer contact, continued market analysis and aggressive, advanced
research. The McIntosh reputation for excellence in performance, flexibilty,
quality and reliability comes from extensive testing leading to the careful
selection of materials and circuit components combined with dedicated
craftsmanship.
MA 6200
Features
Seven
Different Program Sources
The input
switch selects from five different sources or you can choose to listen to
either of two tape recorders at the push of a button.
Precision
Step Attenuator Volume Control
Ideal volume
control tracking accuracy and noise free performance are two of the
considerable benefits of the McIntosh Precision Step Attenuator. It is a
thirty-two step, 70 dB range control with unheard of tracking accuracy within 1
dB. The extreme accuracy is obtained through special electronically controlled
resistance element trimming. The accuracy and quiet operation are maintained
because the switch commutator touches, only the switch contact pad and not the
precision resistor elements.
True
Loudness Compensation
In the past,
loudness controls have typically used simple passive circuits connected to a
portion of the rotation range of the volume control. As a consequence, loudness
compensation accuracy was dependent on many variables such as speaker
efficiency, amplifier gain and differences in input level. The MA 6200 loudness
control is continuously variable, operates independently of the volume control,
and its contour is accurately modeled after the Fletcher Munson family of
"Equal Loudness" curves.
Five Band
Program Equalizer
Five
separate controls permit individual musical spectra shaping in two octave
segments to satisfy personal preference or program limitations. There is 12 dB
plus or munus control at center frequency of the individual segments. The
center frequency are 30, 150, 500, 1500 and 10,000 Hz.
Dual Tape
Monitor And Tape Copy Switches
Two tape
recorders can record simultaneously from the program being listened to or you
may record from one to the other without interfering with the
"Listen" program.
Power Guard
Indicator and Protection Circuit
Two red
power quard indicators indicate when the power amplifier has reached full
output. At this point the power guard circuit begins to control amplification
dynamically so that you will not hear the harsh distorted sound of square wave
clipping. In addition your speakers are protected from burnout.
Very Low
Impedance Phono Preamplifier
A new
state-of-the-art. Technology operational amplifier is arranged in a low
impedance circuit to reduce noise to the lowest achievable level. The circuit
follows the RIAA equalization curve.
Preamp
Output - Power Amp Input Connections
Back panel
connections provide the ability to insert room equalizers, reverberation units
or other signal processing devices.
Low Noise
High Performance Op-Amps
New
technology low noise operational amplifiers give lower noise and greater band
width than conventional devvices.
Electronic
Active Filter Elements
"Active
filter" technology is used to generate the equivalent of the inductors
normally used in equalizer filters. This eliminates the hum pickup of
inductance non linearity than often occurs from conventional inductors.
"LED"
Function Indicators
System
status is indicated by long life "LED " indicators
Turn-on
Transient Elimination Circuits
Speaker
outputs are connected only sfter power supplies and circuits have stabilized
eliminating turn on thumps or clicks
Harmonic
Distortion
Harmonic
distortion does not exceed 0,05% when measured from the phono input to the
speaker output from 20 Hz to 20 kHz at all power levels from 250 mW to full
rated output.
Auto Turn
On/Turn Off
Power to the
entire stereo system can be controlled from either the front panel power switch
or the turntable's power switch. A current sensing relay connected to the
turntable AC power outlets is controlled by the turntable power switch. The
relay, in turn controls the AC power to the remainder of the system.
Speaker
switches for Three Sets of Speakers
Three sets
of loudspeaker may be used one at a time, two together, or all three
simultaneously.
Speaker
Protection Circuits
Loudspeaker
are protected from burnout by the Power Guard circuit and also by other circuit
that instantaneously disconnect the speakers in he presence of DC on the output.
Specifications
Power
Output:
75watts
minimum sine wave continuously average power output per channel, both channel
operating into 4 Ω (20 Hz - 20 kHz,
THD no more than 0,05%)
100
watts minimum sine wave continuously average power output per channel, both
channel operating into 8 Ω (20 Hz -
20 kHz, THD no more than 0,05%)
Output
Load Impedance: 4 Ω , 8 Ω
Rated Power
Band: 20 Hz to 20 kHz
Total
Harmonic Distortion: 0,05% (max imum at
any power level from 250 milliwatts to rated power per channel20 Hz to 20 kHz)
Intermodulation
Distortion: 0,05% (max imum at any power level from 250
milliwatts to rated power per channel with both chanels operating for any
combination of frequencies 20 Hz to 20 kHz)
Frequency
Response: 20 Hz to 20 kHz +0, -0,5 dB at
rated power
Hum and
Noise:
Power Amp
: 105 dBA, 100 dB unweighted, below
rated output
Tape, Aux
Input : 100 dBA, 95 dB unweighted below
rated output
Phono
Input: 85 dBA, 80 dB unweighted, below
10 mV input
Damping
Factor: Greater than 30
Input
Sensitivity / Impedance:
Power
Amp : 2,5 V/22 k Ω
Tape,
Aux : 250 mV/100 k Ω
Phono
: 2 mV/47 k Ω, 100 pf
Tape Output:
Aux, Tape
: 250 mV with rated input
Phono : 250 mV with rated input
Program
Equalizer: ±12 dB at 30, 150, 500, 1500,
and 100,000 Hz
Semiconductors
Complement:
42
Transistors; 13 IC; 25 Diodes; 1 Silicon Controlled Rectifier
AC Power
Outlets:
2 Automatic
current sensing (green)
3 Switched
(black)
Power
Requirement: 120 V, 50/60 Hz; 0,5 to 4
amps (50 to 400 watts)
Dimensions:
Front Panel (W x H) : 406 x 138 mm (16" x 5-7/16")
Chassis (W x
H x D): 375 x 122 x 330 mm (14-3/4"
x 4-13/16" x 13")
Including
PANLOC shelf and back panel connectors.
Knob
clearance required is 32 mm (1-1/4") in front of the mounting panel
Weight:
Net : 13,6 kg (30 pounds)
Shipping
: 19,1 kg (42 pounds)
Finish: Front panel is anodized gold and black with
special gold/teal nomenclature illumination. Chassis is black
Mounting: Exclusive McIntosh developed professional
PANLOC