Yamaha TransAcoustic SHTA Series Maintenance Handbook - Page 5
Browse online or download pdf Maintenance Handbook for Musical Instrument Yamaha TransAcoustic SHTA Series. Yamaha TransAcoustic SHTA Series 18 pages. Upright piano
Print Page
2. Summary of TransAcoustic
■Characteristics of TransAcoustic
・
The newly developed TransAcoustic
makes the piano sound as speakers itself.
・ Since the sound comes directly from the soundboard, you do not need to connect the speakers.
・
Soundboard and device (TD ASSY) for vibrating the sound board have been attached with a connecting rod,
called "TD Shaft Assy". The TD ASSY vibrates the TD Shaft Assy, then the vibration is transmitted to the
soundboard.
・
Due to environmental change, the soundboard repeatedly expands and contracts, therefore the TD Shaft is
required to change the three-dimensional motion in accordance with the movement of the soundboard.
Soundboard
Anchor
■Maintenance of TD ASSY
・ There is no need for maintenance and periodic adjustment.
However, if replacement of parts are required, such as malfunction of the TD ASSY, please execute the work in
accordance with the "11.TD ASSY replacement procedure (Page 10)".
・
The TransAcoustic Piano is set in accordance with the individual differences of the pianos in the factory during
production. Adjustment is required when a part is replaced. Please refer to "10. PEQ data migration of SWBOX
replacement (Page 8)" for more information.
[What is 'PEQ data']
PEQ data = TA mode EQ Calibration data
The function of 'TransAcoustic
actuator. So each piano has its unique characteristic of frequency. The PEQ data is used to adjust the
characteristic.
The data is saved in the SWBOX unit.
If the PEQ data is lost or other's PEQ data is mis-loaded, there is a possibility that you cannot play normally (ex.
there is uneven velocity sound between the keys).
[Location data to be stored]
Damper pedal half point position
Key sensor measurement
Piano type (Touch curve selection)
PEQ Data
*Measurement by calibration mode or data trancefer is required when replacing each unit.
TM
Technology
TM
Technology
TM
Technology transmits digital sounds directly to the piano soundboard and
TD shaft Assy
TM
Technology' is to produce sound by driving the sound board using the trance-
Data
- 5 -
Unit
Switch box
DM Sheet
Key sensor
Key sensor sheet
Switch box
DM Sheet
Switch box
DM Sheet
TD ASSY
Sheet