Yamaha YBB-645G Benutzerhandbuch - Seite 11

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 Tuning the Instrument

Slide the main tuning slide in or out to tune the

instrument. Since temperatures have an effect

on the instrument's pitch, blow some warm air

through the instrument to warm up the instru-

ment before tuning.

Main tuning slide

  About the secondary main tuning

slide (YCB-623/YBB-623 only)

CAUTION

Never hold the secondary main tuning slide when

you lift the instrument. Th e secondary main tuning

slide would separate from the instrument, causing

it to fall and resulting in possible injury or damage

to the instrument.

The YCB-623 and YBB-623 are both equipped

with a secondary main tuning slide. Normally,

adjust the main tuning slide in or out to tune the

instrument. The secondary main tuning slide is

used as a secondary mechanism for tuning the in-

strument supplementary.

Secondary main tuning slide

Main tuning slide

Before You Play

You can tune the instrument fi nely by using the

secondary main tuning slide during, before and

after playing.

 Adjust the secondary main tuning slide to

the home position

The secondary main tuning slide is inserted all

the way inside to the end of the instrument when

shipped from the factory. Before you play, pull

out the secondary main tuning slide to the home

position. You can see the reference line on the

secondary main tuning slide, indicating the home

position when the secondary main tuning slide is

pulled out to 25 mm (1 inch). After adjusting the

secondary main tuning slide to the home position,

tune the instrument by the main tuning slide.

Th is instrument is designed that the normal pitch

(with the secondary main tuning slide adjusted

to the home position above) is almost the same as

that of a conventional tuba (with the main slide

inserted to the end of the instrument). If the pitch

is low, due to the following conditions, move the

secondary main tuning slide further inside to ad-

just the pitch higher.

• When using in cold regions

• When the instrument is not warm enough

If the pitch is high, pull out the secondary main

tuning slide from the home position.

Secondary main

tuning slide

25 mm (1 inch)

Reference line

Adjust the secondary

main tuning slide to the

reference line.