Roland DP-900 Owner's Manual page 38

Troubleshooting
Case Cause/Remedy
In the upper On an acoustic piano, notes in the up-
range, the sound per one and a half octaves of the key-
changes abrupt- board continue to sound until they
decay naturally, regardless of the
ly beyond a cer-
tain key 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 When listening through headphones:
whine is pro-
duced
If you can't hear the problem in the
headphones:
38
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.
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.
Case Cause/Remedy
The bass range If you can't hear the problem in the
sounds odd, or headphones:
there is a vibrat-
ing resonance
When listening through headphones:
The volume level Could you be using a connection cable
that contains a resistor?
of the instrument
connected to In- Use a connection cable that does not
put jacks is too contain a resistor.
low
926b
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.
• Place speakers so they are 10–15
cm from walls and other surfaces.
• Reduce the volume.
• Move the speakers away from any
resonating objects.
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.