|89,800yen(around the 1986 time)
audio-video surround center which carries a digital
The digital delay is carried and the extensive modification of a
property is realized by carrying out the A/D conversion of the analog signal
once, and digitizing and controlling it.
A 16-bit linear-line
successive-approximation-type analog-to-digital converter, 16 KbitS-RAM, and an
IC for an address control are consisted of by this circuitry, and the delay time
of 15/20/30msec can be set to it.
As surround mode, the three modes,
Dolby surround, hole surround, and matrix surround, are carried.
surround has acquired the surround intelligence by applying a delicate time
delay to the difference signal added to 2usual ch signals (L-R). Moreover, in
hole surround, the front speaker is being reproduced from the usual stereophonic
reproduction and a back surround speaker, applying an echo to the composite
signaling supposing a concert hall of reflective sound (L+R).
In matrix surround, 2ch signals which mixed a little signal on either side
are reproduced from a front. From rear , the signal which added the negative
phase component of opposite ch conversely is reproduced.
The surround indicator which can
check at a glance what has happened to the present surround control status is
It is also possible to turn OFF when unnecessary.
time of a hole surround play, it is possible to adjust the amount of echoes of surround according to liking.
the full mute switchpoint is carried and
all the sound is stopped at a stretch -- things can be carried out.
4 mode balance volume in which, as for the master volume which can control
the volume of all the channels simultaneously, the 2ch/rear 2 ch/R side
can control 2ch, and the 2 ch/L side can control a front is carried. Moreover,
three kinds of volumes of each channel independent volume are carried.
The synthesizer tick stereo functionality is carried and a monophonic signal
can be done in a stereo in false by letting a digital-signal-processing
The it1 position is carried. (to sake when surround is unnecessary)
The tone control which can adjust a front and each rear tone quality is
The image enhancer which rectifies the outline of an indistinct image and reproduces a clearer image is built in.
The change of a two-step of 3dB
and 6dB is possible for the amount of enhancing.
amplifier is carried 4 ch.
The using as 2ch amplifier is also possible for
this amplifier by the BTL interconnection.
The wireless remote control
in which the change of each surround, a delay time selection, and a volume
coordination of each ch are possible is attached.
With this remote control, a surround position, a volume, delay time, etc. are memorizable to three kinds
with a memory functionality.
||audio-video surround center
|Effective output (1kHz, 5%, 6ohm)
100W+100W (at the time of BTL)
||0.03% (at the time of 20W output)
||Voice: Mono-[ three stereos, / two ]
Image: Four lines
||Voice input: 150mV / 47kohm
Video input: 1 Vp-p/75ohm
||16-bit linear-line quatization (digital)
||15, 20, 30msec
|The maximum Dimensions
||Width 430x height 110x depth of 340mm
Width 430x height 122x depth of 359mm (maxima)
||Wireless remote control AR-301