It is the Integrated Amplifier which attained high-quality sound-ization
of compact disk based on PM-84.
In PM-84D, MOS FET is carried in the
MOS FET has the outstanding switching characteristic, a distorted property,
and a heat characteristic, and has a property ideal as a power amplification
element. The parallel push pull stream composition by this MOS FET is adopted,
and MOS FET of both eight channel is adopted.
FET parallel push pull stream-composition output stage is controlled for
Quarters A and AVSS.
The quarter A operated with the pure Class-A to 1/4
(quarter) of the maximum output, and 25Wx2, by more than it, it shifted to AB
class automatically and high power has been obtained. It is reproducible,
maintaining the linearity which was excellent in the vast power area by this.
Furthermore, in AVSS, the change of a pure Class-A and AB class is
interlocked with, output supply voltage is shifted, and the power element is
driven in the ideal conditions.
The compact disk/Phono direct
switchpoint is carried.
compact-disk direct is directly linked with flat
amplifier only by passing along a volume, and a Phono direct is played in phone amplifier / volume / flat amplifier / the power amplifier shortest path.
purer amplification is enabled because digital one and an analog let a necessary
minimum stage pass.
The Phono input carries the circuit changing switch
of man month/MC(High)/MC (Low), and supports various cartridges.
power-source part is filled up with a resin in order to raise the
heat-dissipation effect, and the newly developed custom-made mass capacitor
consisting mainly of the high three-fold regulation shielding large-sized
transformer which eliminated the magnetic flux leakage, and a 76,000-micro F
electrolytic capacitor is carried in it.
In order to elaborate a final
tone quality, the tuning by the thorough listening comprehension test used
non-magnetic material for the fraction which can consider influences of an eddy
current, such as an in-use cage, a chassis, a screw, repeatedly positively, and
has adopted the copper plating chassis and the copper plating screw as it.
Furthermore, he examines the part of 100 or more points by a hearing, and
the tone quality is raised.
|Output power (20Hz - 20kHz, both channel drive)
||AB class: 100W+100W (8-ohm load intensity)
Pure Class-A: 25W+25W (8-ohm load intensity)
|Output bandwidth (8 ohms, THD 0.03%)
||5Hz - 40kHz
|THD (20Hz - 20kHz, 8ohms)
|Cross modulation distortion
||20Hz-20kHz+0 -0.2 dB
|Dumping factor (8ohms)
||Phono man month: 2.5mV/47kohm
MC: 125 microvolts/100 ohms
Phono High MC: 2.5mV/100 ohms
|SN ratio (IHF-A network)
||Phono man month, High MC (2.5mV): 90dB
Phono MC (125 microvolts): 76dB
|Phono maximum permissible input (1kHz)
||man month, High MC: 150mV
|Tone control property
||Bass: ±10dB (100Hz)
|Subsonic-Filter property (-3dB)
||16Hz, 6dB / oct
|Power consumption (Electrical Appliance and
Material Control Law)
||Width 458x height 146x depth of 410mm
Width 458x height 164x depth of 450mm (maxima)