Roland DP-900 用户手册
38
Troubleshooting
926b
In the upper
range, the sound
changes abrupt-
ly beyond a cer-
tain key
range, the sound
changes abrupt-
ly beyond a cer-
tain key
On an acoustic piano, notes in the up-
per one and a half octaves of the key-
board continue to sound until they
decay naturally, regardless of the
damper pedal. There is a difference in
the timbre as well. Roland pianos
faithfully simulate such characteristics
of the acoustic piano. On the DP-900,
the range that is unaffected by the
damper pedal will change depending
on the Key Transpose setting.
per one and a half octaves of the key-
board continue to sound until they
decay naturally, regardless of the
damper pedal. There is a difference in
the timbre as well. Roland pianos
faithfully simulate such characteristics
of the acoustic piano. On the DP-900,
the range that is unaffected by the
damper pedal will change depending
on the Key Transpose setting.
A High-pitched
whine is pro-
duced
whine is pro-
duced
When listening through headphones:
Some of the more flamboyant and
effervescent piano tones feature an
ample high-end component,
which may make the sound ap-
pear to have metallic reverbera-
tion added. Since this
reverberation becomes particular-
ly audible when supplemented by
heavy reverb, you may be able to
diminish the problem by reducing
the amount of reverb applied to
the sound.
effervescent piano tones feature an
ample high-end component,
which may make the sound ap-
pear to have metallic reverbera-
tion added. Since this
reverberation becomes particular-
ly audible when supplemented by
heavy reverb, you may be able to
diminish the problem by reducing
the amount of reverb applied to
the sound.
If you can’t hear the problem in the
headphones:
headphones:
Here, a different cause (such as
resonance produced by the DP-
900) would be suspect. Consult
your Roland dealer or nearest Ro-
land Service Center.
resonance produced by the DP-
900) would be suspect. Consult
your Roland dealer or nearest Ro-
land Service Center.
Case
Cause/Remedy
The bass range
sounds odd, or
there is a vibrat-
ing resonance
sounds odd, or
there is a vibrat-
ing resonance
If you can’t hear the problem in the
headphones:
headphones:
Playing at loud volumes may
cause instruments near the DP-900
to resonate.
Resonation can also occur with
fluorescent light tubes, glass
doors, and other objects. In partic-
ular, this problem occurs more
easily when the bass component is
increased, and when the sound is
played at higher volumes. Use the
following measures to suppress
such resonance.
cause instruments near the DP-900
to resonate.
Resonation can also occur with
fluorescent light tubes, glass
doors, and other objects. In partic-
ular, this problem occurs more
easily when the bass component is
increased, and when the sound is
played at higher volumes. Use the
following measures to suppress
such resonance.
• Place speakers so they are 10–15
cm from walls and other surfaces.
• Reduce the volume.
• Move the speakers away from any
• Move the speakers away from any
resonating objects.
When listening through headphones:
Here, a different cause (such as
resonance produced by the DP-
900) would be suspect. Consult
your Roland dealer or nearest Ro-
land Service Center.
resonance produced by the DP-
900) would be suspect. Consult
your Roland dealer or nearest Ro-
land Service Center.
The volume level
of the instrument
connected to In-
put jacks is too
low
of the instrument
connected to In-
put jacks is too
low
Could you be using a connection cable
that contains a resistor?
Use a connection cable that does not
contain a resistor.
that contains a resistor?
Use a connection cable that does not
contain a resistor.
Case
Cause/Remedy
DP-900_e.book 38 ページ ２００４年１１月２９日 月曜日 午後１２時５８分