Audio Database

The

Marantz PM-95 319,000yen(1988 release)

Description
 
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.


Internal
Rear
Option
Large-sized
Die-casting
TDA1541A-S1

Rating of a mode
Form Digital integrated amplifier
<Overall characteristic>
Output power
(at the time of 20Hz - 20kHz, and both channel operation)
At the time of a first class operation : 50W+50W (4ohms)
40W+40W (6ohms)
30W+30W (8ohms)
At the time of AB class operation : 190W+190W (4ohms)
155W+155W (6ohms)
120W+120W (8ohms)
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)
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)
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
Weight 27.2kg
Option: Command master rc-95PM (\40,000)
The maximum Dimensions Width 260x height 31x depth of 126mm
Option 730g (battery included)