User Manual

11
Main tuning slide
Before You Play

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.

About the secondary main tuning
slide (YCB-623/YBB-623 only)
CAUTION
Never hold the secondary main tuning slide when
you lift the instrument.  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.
You can tune the instrument  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.
Secondary main
tuning slide
Reference line
Adjust the secondary
main tuning slide to the
reference line.
25 mm (1 inch)
 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.
Main tuning slide
Secondary main tuning slide