Boss TU-8 - Flat and Double Flat Tuning Modes; Selecting Flat;Double Flat Tuning; Adjusting Reference Pitch; Procedure for Adjusting Reference Pitch

molgaDyelele)(-Malojmivialiale
Flat tuning is a semi-tone below standard tuning. The LED display will
still show the notes as if it were standard tuning, but the absolute pitch
will be a half-step lower. This makes it easier to tune and play in flat keys.
Double flat tuning is the same thing only a whole tone lower than
absolute pitch.
* When you select Open Tuning mode, you cannot select Flat (or
Double Flat) Tuning.
1.Each press of the Flat button selects one of three conditions: standard
tuning, flat tuning or double flat tuning.
This condition can be checked by the flashing of the Flat/Double Flat
Indicator.
Regular Tuning
Flat Tuning
Double Flat Tuning
* When you select Flat (or Double Flat) tuning, you should first tune
each string using the MANUAL mode.
* Even if you select Flat (or Double Flat) tuning, the TU-8 will return to
standard tuning when you power up again.
Changing the Reference Pitch
Reference Pitch refers to the frequency of note A4 (on a piano, the key
at the center of the keyboard) on the instrument that will provide the
predominate tonal focus of a performance (such as the piano). You
should tune all instruments so they are in tune with this Reference Pitch.
At power up, the reference pitch of the TU-8 is set to 440 Hz (for note
A4). If you intend to change the reference pitch, perform the following
steps.
1.Set the Power/Mode switch to “AUTO” or “MANUAL”.
2.Check the current reference pitch.
Press the PITCH button once and the indicator which shows the
current pitch will blink for a few seconds.
3.Adjust the reference pitch.
While the indicator which shows the current pitch is blinking, press
the PITCH button once again. Each press of the button raises the pitch
by 1 Hz. Press the button enough times to obtain the desired setting for
the reference pitch. This can be confirmed by watching for the desired
reference pitch indicator to begin blinking. The reference pitch can be
set anywhere between 438 to 445 Hz (in 1 Hz increment) for note A4.
lf you make no further changes in the reference pitch for a few seconds,
the indicator will go out, and the unit reverts to the tuning mode.
* The reference pitch will return to 440 Hz the next time the unit is
turned on.
Battery Check
When the battery is nearly exhausted, the two Tuning Guide Indicators
(“b” and“ =”) will begin blinking. After a few seconds, the indicators
stop blinking and you can tune again. At this point, replace the battery
as soon as possible.
Furthermore, when powering up or while working, if the battery has
been exhausted, the two Tuning Guide Indicators will blink and you
cannot tune. Replace the battery immediately.
Flashing
ato late [lave Miat-m-selii=)ay
1.Press down and slide off the lid of the battery compartment (located
on the bottom of the unit).
2.Remove the old battery from the compartment and disconnect the
snap cord.
3.Connect the snap cord to the new battery.
4.Place the new battery inside the compartment and slide the lid back
into place.
ny ol =er | {ere ite) als
TU-8 Guitar & Bass Auto Tuner
Reference Pitch ‘“A4 = 438 Hz to 445 Hz (1 Hz steps)
Tuning Range “AO (27.5 Hz) to C8 (4186.0 Hz)
Tuning Accuracy — :+/- 1 cent
Input Impedance = :1 MQ
Controls -Power/Mode Selection Switch, PITCH Button,
NOTE Button, Tuning Mode Switch, Flat Button
Indicators ‘String Name Indicator, Flat/Double Flat Indicator,
Tuning Guide Indicators
Connectors ‘Input Jack, Output Jack, AC Adaptor Jack
Power Supply -DC 9V :Dry Battery (9V type), AC Adaptor PSA-
Series
Current Draw :20 mA (typical)
* Expected battery life under continued use.
(This figure will vary depending on the actual
conditions of use.)
Carbon :approx. 10 hours
Dimensions 7149 (W) x 54 (D) x 32 (H) mm
5-7/8 (W) x 2-1/8 (D) x 1-1/4 (H) inches
Weight 175g / 6.2 oz (including battery)
Accessories :-Dry Battery S-OO6P / 6F22 (9 V), Owner's Manual
Option :PSA-Series (AC Adaptor)
Copyright ©1993 BOSS CORPORATION
* The specifications and/or appearance of this product are subject to
change without prior notice.
* All right reserved. No part of this publication may be reproduced in any
from without the written permission of BOSS CORPORATION.
00344345