|ONKYO Integra A-929
|170,000yen(around the 1998 time)
The Integrated Amplifier of the upper model which
performed high-definition-ization further based on Integra A-927.
was eliminated from the power amplification stage of the power amplifier part, and low-distortion-ization is realized over all the bands, without depending on
Moreover, the heat stability is also improved by the review of the
temperature-compensation circuitry, the necessity also of the small resistor
usually inserted in the output side of amplifier in series was lost, and the
reduction of the Output load impedance of power amplifier is also attained.
The double core laser transformer to which the acknowledged laser
transformer was further evolved from the former is carried in the power-source
By this transformer, magnetic leakage is further reduced by combining
two cores of the shape of a coil which continued in the fewest rolling
orientation of magnetic reluctance. Moreover, by having cut a part of core, form
of a coil can be used as a cylinder type and it is possible to also coil
very-thick copper wire reasonable. Powering capacity improved by this and the
power-source part strong also against a continuous large current is realized
also to the momentary transition.
Furthermore, a special resin is filled up
with A-929, and it fixes mechanically and firmly in it so that it may shield
severely to this double core laser transformer and may not be influenced to the
oscillation from the interior and the outside.
Moreover, the blue capacitor
is adopted as a block capacitor.
Midbass Presence other than conventional Bass/Treble is added to the tone control.
In Midbass Presence, while being unable to rectify by the conventional tone control, a low-pass (200Hz - 300Hz) coordination is possible. It is filled with the room by this, and a complement of admiration or a feeling of actual existence of vocal is possible.
Furthermore, an effective coordination is possible, when birth control
is boosted, and it is simultaneously boosted to inside low-pass and is
hard to hear it.
right-and-left independency was achieved and the Treble control has adopted the
double axis type which can be adjusted.
The direct selector which
bypasses a tone circuitry is carried and the power amplifier direct position
which can be direct inputted into power amplifier only through a volume from an
exclusive termination in addition to a tone position and a direct position is
In A-929, in order to realize a more nearly high-definition
power amplifier direct, the top in terminal is adopted. The pin terminal could
be prepared in the volume latest by this, and shortest-ization of an internal
wiring is realized.
Moreover, the work is carried out so that a terminal
cover can be used also as a cable clamper with the prevention from loss.
The 4-unit Detent volume which can constitute a dedicated communication
circuit into a tone position and each direct position is adopted as a volume.
Supposing the real busy condition in a house, this volume makes the riser of
a damping curve loose, and is also performing the review of Input sensitivity so
that a minimum feeling of an operation may be obtained.
The WIMA film
capacitor and the high precision carbon resistor are supplied to the main parts
in connection with a tone quality.
Moreover, the 70-micron thickness which becomes twice usual is used for
the Copper foil of the printed circuit board which constitutes main circuitries,
and it is attaining quality improvement.
The speaker terminal by German WBT is adopted as a speaker
A structure is a vice type, a positive interconnection is possible for
it, without damaging a cable, and also it can also insert a banana plug.
The 2mm2OFC (non-oxygen drum) cabtire cable is attached to
the power cable, and the inlet scheme (power-source input connector) based on
IEC specification is adopted.
Consideration is carried out so that the
internal structure can constitute a rational powering line with shortest-ization
of the signal path from an input to an output.
Each block considers it as a
structure with firm TAP-box form, and the intensity of the whole chassis is
raised by making it combine with each other. Furthermore, with emphasis also on
vibration analysis, an infinite form rib is prepared everywhere and strong
reservation and a variance of the vibration are aimed at.
In order to
correspond also to an analog player, the man month/MC phone equalizer is
The step type balance control, the Rec selector, and the
Subsonic Filter are carried.
MDF is used for the bonnet which protects
the side and the upper surface.
||160W+160W (4 ohm, 20Hz - 20kHz)
170W+170W (6 ohms, 1kHz)
||0.04% (at the time of an Output power 8 ohm, 20Hz - 20kHz)
|Cross modulation distortion (70Hz:7kHz=4:1)
||0.04% (at the time of an Output power 8ohm)
||160 (8 ohm, 20Hz - 20kHz)
disk, Tuner, Line, Tape: 105dB
Direct, Power Amp Direct: 117dB
||Phono man month: 3.0mV / 47kohm
MC: 300 microvolts/100ohm, 50ohm
compact disk, Tuner, Line, Tape:300mV /,
Direct and Power Amp Direct:500mV /, 25kohm
(Electrical Appliance and Material Control Law)
||Width 445x height 167x depth of 438mm