
Marantz PM-95 |
319,000yen(1988 release) |
Digital integrated amplifier which carries a digital
analog converter.
It was selected carefully from device"A version" of
the Philips Marantz group by the D-A-conversion part, TDA1541 A-S1 LSI on which
the crown multiple asynchronously communicating hosts proving the best was
stamped is adopted as it, and the tone quality excellent in especially the
reproductivity in a low is realized.
The power amplifier part has the
simple composition that an input signal is direct fed from a volume, and the
first rank is a differential amplification of a cascode interconnection, and has
secured sufficient gain (gain) with the combination of FET and a bipolar
transistor.
The output stage has adopted Power-MOS FET which is a triple
push pull stream composition and is an element of the power amplification for
audios. Moreover, two kinds of operation methods, a pure Class-A operation and
AB class operation, can be chosen by switchpoint switching.
The
large-sized toroidal transformer and the mass LowESR type capacitor are carried
in the power-source part. Moreover, in order to drive a speaker powerfully,
oxygen free high conductivity copper 1.53mm in diameter is used for product-line
material.
Moreover, in order to prevent the wraparound to the analog circuit
of a digital noise, the power-source part which became independent, respectively
is adopted, and the high speed power source which made full use of
high-integrated IC of a low-noise wide band is carried in the analog system.
Furthermore, consideration which thought as important a tone quality, such
as using the copper plate of non-magnetic material also for capacitor fixing
metal, is carried out.
it is hard to produce a mechanical distortion by adopting as a chassis
the die-casting chassis which gave the copper plating, and also adopting
a die-casting side panel high rigid structure is realized. Moreover, a
heat sink uses high-intensity aluminum material with a right-and-left independent
structure, and is performing the efficient air cooling without blower by
the absent resonance.
in addition, aluminum
shaving appearance is carried out to a volume knob, and it finishes, it puts
into practice adopting the Copper-foil pattern of 70-micrometer thickness as the
printed circuit board based on a polyesters etc., and no vibrating and an absent
resonance are investigated.
Furthermore, a highly efficient relay (25
pieces) is adopted as the shielding which intercepts a digital part and an
analog part completely, and a function change. A pattern product line is also
combined by the shortest distance, and the improvement in a separation is aimed
at.
A digital-analog-converter output can be directly fed into a master
volume with a digital direct switchpoint.
As an option, there is remote controller rc-95PM with command memory (learning
function), and a remote control operation of the audio-visual apparatus
of PM-95 or others is possible from a listening position.
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Form |
Digital integrated amplifier
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<Overall characteristic>
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Output power
(at the time of 20Hz - 20kHz, and both channel operation) |
At the time of a first class operation :
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50W+50W (4ohms)
40W+40W (6ohms)
30W+30W (8ohms) |
At the time of AB class operation :
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190W+190W (4ohms)
155W+155W (6ohms)
120W+120W (8ohms) |
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Dynamic power
(at the time of AB class operation) |
460W+460W (2ohms)
300W+300W (4ohms)
230W+230W (6ohms) |
THD |
0.008% (20Hz - 20kHz, 8-ohm load intensity)
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Cross modulation distortion |
0.008%(SMPTE) |
Output bandwidth (an 8-ohm load intensity,
THD0.04%) |
10Hz - 40kHz |
Frequency characteristic |
10Hz-150kHz+0 -3 dB |
Dumping factor |
200 (an 8-ohm load intensity, 1kHz)
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Input sensitivity/impedance |
150mV/33kohm (1kHz) |
SN ratio |
106dB (A network) |
<Digital-analog-converter
part> |
Digital sampling frequency |
32kHz, 44.1kHz, 48kHz |
SN ratio |
106dB(EIAJ) |
Distortion |
0.003%(EIAJ) |
Dynamic range |
98dB |
Digital input |
Coaxial: 0.5 Vp-p/75ohms
Optical:
-15dBm--25dBm |
Digital output |
Coaxial: 0.5 Vp-p/75ohms |
<Others> |
Supply voltage |
AC100V, 50Hz/60Hz |
Power dissipation |
330W (Electrical Appliance and Material
Control Law) |
The maximum Dimensions |
Width 454x height 170x depth of 457mm
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Weight |
27.2kg |
Option: Command master rc-95PM
(\40,000) |
The maximum Dimensions |
Width 260x height 31x depth of 126mm
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Option |
730g (battery included) |
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