||* Build-to-order article
450,000yen (December, 1992 release)
Stereo power amplifier which adopted the newly
developed MOS class AA circuitry
The MOS class AA circuitry is carried.
In the class AA circuitry, high power and perfect Class-A voltage control
are realized by performing the current supply source which makes a voltage amplification and speaker of the music signal inputted from the source drive
with respectively different amplifier. In the MOS class AA circuitry, this class
AA amplifier is used as the base, and MOS FET which is the amplification element
the input impedance excelled [ element ] in the RF property very highly as a new
element is adopted as voltage control amplifier. This is raising the linearity
of signal control further.
And speaker drive power has been improved by the
powerful current supply source by a bipolar transistor, and stable high output
Ten total numbers and the total capacity of 75,000 micro F
carry the mass electrolysis aluminum capacitor of the newly developed MASTER
series in the capacitor.
This capacitor has improved the mechanical property
by using the newly developed special vibration suppression aluminum for a case.
Three power transformers are carried and are used one set for the
voltage control amplifier of one set and both channels for the
current-supply-source amplifier of a right-and-left channel, respectively.
While using an oxygen-free-high-conductivity-copper line for these
transformers, the regulation which was excellent with the high-density efficient
technology is realized. Furthermore, by enclosing in three-fold magnetic
shielding case which enclosed the special resin, an equipment oscillation and
leakage flux are stopped and electrical noise is reduced sharply.
sub- wood of 3mm thickness heavy weight class top plate, high-rigidity chassis,
large-sized insulator, and real wood specular surface finish etc. is adopted, and the magnetic radiation and the equipment oscillation are reduced sharply.
The balance input terminal is carried.
This termination has realized
the transmit stabilized by giving a severe shielding so that influence of the
transformer scheme of the balance volume which stopped the degree of unbalance, and an external magnetism may not be received in DL type permalloy core.
The high-order-accuracy large-sized power meter in which the bronze
glass of 10mm thickness was inserted is carried.
This meter can carry out
the Direct reading of 0.0001W-300W.
The OFC bus bar and the LC-OFC
internal wiring are adopted.
The electronic formula speaker selector is
adopted. The reliable golden cladding contact is adopted as a switchover of a
Moreover, the gilding large-sized termination mounted on the aluminum base is adopted as a speaker termination.
The internal construction made the right-and-left channel the twin monophonic
structure where it became independent, respectively, and has improved the
noise and crosstalk which are generated among both channels.
newly developed non-inductive resistance object is adopted.
This resistor is
raising the content of the alumina of the insulator which is a base material.
With the Joule's heat emitted itself, it prevents barring signal regeneration
and the high region response is raised.
The PC-OCC power cord with a
polar window is adopted.
|The speaker termination and input county of a real panel
Newly developed unguided high-quality sound low antibody
|The high-quality sound aluminum electrolytic capacitor for L channels
||Stereo power amplifier
||240W+240W (4 ohms, 20Hz - 20kHz, 0.005%)
200W+200W (6 ohms, 20Hz - 20kHz, 0.005%)
170W+170W (8 ohms, 20Hz -
||20Hz-20kHz+0 -0.1 dB
|Meter indicating range
||Width 483x height 208x depth of 473mm