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Trouble Shooting
Double-triggers (when 2 sounds are played at the same time) are produced.
● Are you using a sensor made by a manufacturer other than Yamaha? If the signal is too large, double-triggers may
be produced.
● Is the head causing irregular vibrations? It may be necessary to mute the head.
● Is the sensor attached close to the center of the head? Move the sensor closer to the rim (above the bearing).
(m P. 11)
● Is the sensor in contact with anything else?
● Pads with output or sensitivity control volumes should be adjusted (lowered).
● Try increasing the rejection parameter. However, a setting a value that is too high may cause the sound to be
muted when another drum is hit at the same time. (m Reference Guide : P. 13 [1-4. Self-Rejection, Rejection])
● Use the self-rejection. (m Reference Guide : P. 13 [1-4. Self-Rejection, Rejection])
● Change the INPUT ATTENUATION setting on the rear panel. (m P. 9 )
Cross-talk (mixed signals from different inputs) is produced.
● Try placing the sensors (DT20, etc.) away from nearby drums.
● Is the gain set too high? (m Reference Guide : P. 12 [1-2. Gain, Minimum Velocity]).
● Try increasing the rejection parameter. However, a setting a value that is too high may cause the sound to be
muted when another drum is hit at the same time. (mReference Guide : P. 13 [1-4. Self-Rejection, Rejection])
● If cross-talk is produced with a specific trigger input, try using specific rejection. (m Reference Guide : P. 13 [1-5.
Specific Rejection])
Sounds are cut when you play continuously.
● The maximum polyphony of 32 voices might be exceeded. In the Drum Kit Voice Edit mode’s [2-3. Alternate
Group, Key Assign Mode] (m Reference Guide : P. 19) set the “Key” value to “semi” or “mono”.
When 2 pads (drums) are played only 1 sound is heard.
● Raise the gain setting of the pad (drum) that is not producing sound. (m Reference Guide : P. 12 [1-2. Gain,
Minimum Velocity])
● Lower the rejection setting of the pad that is not producing sound. (m Reference Guide : P. 13 [1-4. Self-Rejection,
Rejection])
● Are both pads assigned to the same group in the Drum Kit Voice Edit mode’s [2-3. Alternate Group, Key Assign
Mode] display (m Reference Guide : P. 19)?
The sound is always loud.
● Is the minimum velocities minimum value set too high? (m Reference Guide : P. 12 [1-2. Gain, Minimum Velocity])
● Are you using a proper velocity curve? (m Reference Guide : P. 13 [1-3. Velocity Curve])
● Are you using a sensor made by a manufacturer other than Yamaha? Depending upon the manufacturer output
levels might be too large.
● Change the INPUT ATTENUATION setting on the rear panel. (m P. 9 )
The DTXPRESS II does not receive any switch or trigger signals.
● If you can access the Utility mode, do a factory reset. The DTXPRESS II will reset to its factory settings. (m
Reference Guide : P. 30 [2-6. Factory Set])
● Turn the [POWER SW] OFF then ON while holding the [PAGEs] and [PAGEt] buttons. The DTXPRESS II will
reset to its factory settings.
The sound will not stop.
● Some voices have very long release times when the [2-5. Key Off Enable] (m Reference Guide : P. 20) “key off”
parameter is set to “disable”. To temporarily stop the sound, hold the [SHIFT] button and press the [VOICE] button.