Denon DRM-650S - Dimmer Adjustment; Music Search System; Dolby Noise Reduction Systems; Dolby HX PRO Headroom Extension System

4 LE] Sicy 5 |
DIMMER ADJUSTMENT
With
the
DRM-6505,
the
brightness
of
the
display
can
be
adjusted
in
seven
steps.
Tomake
the
display
brighter,
press
the
fast
forward
{
p>}
)
button
while
holding
the
STOP
button.
MUSIC SEARCH SYSTEM
This
device
is
a
convenient
system
which
detects
the
non-recorded
part
of
more
than
4
seconds
between
melodies,
cues
the
next
melody
while
the
present
melody
is
being
reproduced
or
automatically
detects
the
be-
ginning
of
the
melody
now
being
reproduced
and
makes
it
into
the
reproduceable
state.
1.
DOLBY B, C AND S NOISE REDUCTION SYSTEM
DOLBY
HX
PRO
HEADROOM
EXTENSION
SYSTEM
For cueing the next melody while the present melody is being repro-
duced:
Press the PLAY button, keep it pressed in, and press the Fast For-
ward. (>> ) button. The tape transport indicator ( > ) flashes. This
device will detect the interval between melodies with the CUE state
on, automatically become the PLAY mode and begin performing the
next melody.
. For hearing again the melody now being reproduced:
Press the PLAY button, keep it pressed in, and press the Rewind
( <@<q ) button. The tape transport indicator ( > ) flashes. This de-
vice will detect the interval between melodies with the REVIEW
state on, automatically become the PLAY mode, detect the begin-
ning of the melody now being performed and play it from the first
again.
The Dolby noise reduction system substantially reduces the tape
background noise (hiss) inherent in the cassette medium.
Tape background noise consists primarily of high frequency informa-
tion, which is particularly annoying during soft passages. The Dolby
NR system increases the level of low volume mid~and high-frequen-
cy signals during recording and reduces the level of these signals by
an identical amount during playback. As a result, the playback signal
is identical to the original source, but the level of background noise
generated by the tape is greatly reduced.
This deck is equipped with the Dolby HX PRO headroom extension sys-
tem. Since the system functions automatically during recording, no
switching operation or adjustment is required. The system is effective
with any type of Normal, High and Metal tape.
The Dolby HX PRO headroom extension system functions duringrecord-
ing to raise the saturation level in the treble range. Therefore, most of
the treble range components distorted or lost during recording on con-
ventional
cassette
decks
are
more
faithfully
recorded
on
the
new
DENON cassette deck.
12
—_—--.———
ct
eee
To
make
the
display
dimmer,
press
the
fast
rewind
(
<q
)
button
while
holding
in
the
STOP
button.
The display is initially set to the maximum brightness.
_——__-——————_—_—_—
ns
eee
Note: Note about MUSIC SEARCH action.
MUSIC
SEARCH
is
a
function
which
operates
by
detecting
a
compara-
tively
long
non-recorded
part
on
the
tape.
Therefore,
MUSIC
SEARCH
may
not
operate
normally
in
the
following
cases.
Sound on the tape is interrupted by speech or conversation.
Long periods of pianissimo (softly played music) or non-recorded in-
tervals occur on the tape.
The tape has picked up noise in a non—recorded interval.
Non-recordedintervals on the tape are less than 4 seconds inlength.
Noise-emitting electrical appliances are in operation nearby.
i.e.; Electric razors, drills, refrigerators, etc.
-_-
ee
The operating principle of Dolby C NRis similar to that of Dolby B NR
except
for
the
encoding/decoding
response
curves.
The
noise
reduction
effect
obtained
with
Dolby
C
NR
is
up
to
20
dB,
compared
to 10 dB with Dolby B NR. In addition, Dolby C NR uses an anti-satu-
ration network and spectral skewing circuitry for a significant im-
provement in the dynamic range of the mid- to high-frequencies.
The S-type provides a maximum noise reduction effect of 24 dB in
the high frequencies and 10 dB in the low frequencies, and expands
the dynamic range over a wide frequency range.
Features of the Dolby HX PRO Headroom Extension System
(1)
(2)
(3)
(4)
Performance
of
Normal
and
High
tapes
can
be
improved
to
very
close
of
that
offered
by
Metal
tape.
The dynamics in the treble range are improved significantly.
Since
no
decoding
is
necessary
during
playback,
the
improved
sound
can
be
enjoyed
on
any
type
of
tape
deck,
including
portable
players and car audio systems.
The system functions whether the Dolby B/C/S NR system is en-
gaged or not.