The Integrated Amplifier which can switch a pure
Class-A and AB class.
In addition to pure Class-A 20 W/ch, the change of
AB class 80 W/ch is attained. And in order to raise the quality of AB class even
to the level of a pure Class-A, the high speed high fT transistor which took
high high region cut-off frequency with 90MHz is adopted as the power stage.
Switching distortion which is a fault of AB class is banished to a limit.
In PM-5, it has a whole page perfect push pull DC amplifier stream
composition that TIM distortion should be banished from all the corners in
amplifier, and a nakedness property is improved.
Even if it does not apply a lot of NFB, the TIM and the static characteristics
order to raise the operational stability of a power transistor, a newly
developed heat-pipe scheme is adopted as a heat-dissipation organization. Since
heat is drawn out of a circuitry and it cools by a radiator, a transistor can be arranged in an ideal location and simple-izing of a circuitry and a
Low-noise-izing are raised.
Moreover, the mass capacitor developed for
audios and the powerful power transformer which was filled up with the special
resin, took heat-resistant measures and was miniaturized are adopted as a
Especially a phone amplifier block is the low
distortion and high S/N ratio design sumptuously using a transistor.
straight DC circuitry to which phone amplifier is direct connected to the power
stage is taken in, and the quality of the disk play is raised.
highly precise MC head amplifier and a subsonic-speed circuitry are built in
A subsonic speed is used only to an equalizer and is
attaining simple-ization of other functions.
A tone control carries out "the ±8dB variable" of "100Hz" which is a right-and-left standalone version which a fine balance can adjust, and the "10kHz." And adoption of a highly precise volume has realized the entire flat response at the middle point of a thumb.
The peek power meter of a window is suddenly
equipped in the center of the front panel.
It differs from the bar window, and since light emitting diode displays
power on a point in a pure Class-A and AB class, clear moreover, the Direct
reading of the exact output can be carried out.
Moreover, under meter, the dubbing circuitry in which a mutual sound
recording is possible, and two speakers hear it from the deck to the deck, it
compares, and abundant functionalities which can perform a simultaneous play,
such as a speaker multiple contact switch, are incorporated.
||Stereo Integrated Amplifier
(20Hz - 20kHz, both channel simultaneous drive)
|80W+80W (8 ohms, AB class)
ohms, pure Class-A)
||0.015% or less (at the time of an effective
output 20Hz - 20kHz, an 8-ohm load intensity)
|Cross modulation distortion
||0.015% or less (at 60Hz:70kHz=4:1, the time of an effective output 8ohms)
||+ 0, -0.2dB (20Hz - 20kHz)
5Hz - 100kHz
||100 (an 8-ohm load intensity, 1kHz) or more
||phono1 man-month: 2.2mV / 47kohm
phono2 man-month: 2.2mV / 47kohm
phono2 MC: 200 microvolts/75 ohms
TAPE, TUNER, AUX:150mV/40kohm
|An Output power/impedance
||TAPE OUT: 150mV/600 ohms
||±0.2dB (20Hz - 20kHz)
|Tone control property
||±8dB (low-pass 100Hz)
±8dB (high region
|S/N ratio (IHF-A)
TUNER, AUX: 108dB
|Phone maximum permissible input
||Electrical Appliance and Material Control
||Width 416x height 146x depth of 332mm