Boss Chromatic Tuner TU-15 Owner's Manual

Thank you, and congratulations on your choice of the BOSS TU-15 Chromatic Tuner.
Before using this unit, carefully read the sections entitled: "USING THE UNIT SAFELY" and
"IMPORTANT NOTES" (separate sheet).
These sections provide important information concerning the proper operation of the unit.
Additionally, in order to feel assured that you have gained a good grasp of every feature provided
by your new unit, this manual should be read in its entirety. The manual should be saved and kept
on hand as a convenient reference.
As shipped, the TU-15's batteries are not yet installed. Be sure to read "Changing the
Batteries" and then follow the instructions to install the batteries.
Copyright © 2002 BOSS CORPORATION
All rights reserved. No part of this publication may be reproduced in any form without the
written permission of BOSS CORPORATION.
Features
• Backlit meter allows tuning even in dark environments.
• Also features an " AUTO mode ," which automatically determines the note name or string
number, and a " MANUAL mode ," where you can specify note names and string numbers
(which comes in handy after you've restrung your instrument).
Panel Descriptions
Meter & Display
0
Display
Note Name/String Number FLAT TUNING Indicator
Indicator
In CHROMATIC mode, this
indicates the "note name" and
"octave"; in GUITAR/BASS
mode, it indicates the "string
number" and "note name."
OCTAVE ADJUST
Mode Indicator
"OCT ADJ" lights up
when the OCTAVE
ADJUST mode is on.
REFERENCE PITCH
Indicator
Meter
This shows the
Tuning Guide
difference in pitch from
The tuning indicator lights to show how close
the indicated note
you are to the target pitch.
name or string number.
When " " lights: pitch is flat (low)
When " " lights: pitch is sharp (high)
When " " and " " light: in tune ( 3 cents)
Note About AUTO and MANUAL Modes
Normally, you will be using " AUTO mode ," in which note names and string numbers are
indicated automatically.
However, after restringing an instrument, or when using the Open Tuning function, it is more
convenient to use " MANUAL mode ," in which you specify the note names and string numbers
using the [NOTE] button in advance.
Pressing the [AUTO/MANUAL] button toggles the mode between " AUTO " and " MANU ." The
current mode is indicated in the display.
Regarding CHROMATIC and GUITAR/BASS Modes
Mode Description
Allows tuning any of the twelve
CHROMATIC
pitches in the chromatic scale.
Allows tuning by guitar string
GUITAR
number.
Allows tuning by bass guitar
BASS
string number.
Backlight Switch [LIGHT]
Switches the backlighting on
and off.
[CHROMATIC] Button
[GUITAR/BASS] Button
MIC
Use this when tuning acoustic instruments.
Position the mic as closely as possible to the instrument.
Do not connect anything to the INPUT or OUTPUT jacks when
using the mic.
AUTO/MANUAL Mode Indicator
GUITAR/BASS Mode Indicator
OPEN TUNING Indicator
0 Batteries Low Warning
Indicator
" " is normally off, but
flashes when the batteries
begins to run low. Replace
batteries promptly when
you see this indicator
flashing.
Backlight Indicator
" " lights when the
backlight is on.
Operation
The tone name and octave
Press the [CHROMATIC] button .
are displayed.
Press the [GUITAR/BASS] " GUITAR " lights up, and
button one or more times until the string number and
" GUITAR " is lit. tone name are displayed.
Press the [GUITAR/BASS] " BASS " lights up, and
button one or more times until the string number and
" BASS " is lit. tone name are displayed.
Owner's Manual
• Includes " CHROMATIC mode ," which permits tuning to any of the twelve semitone steps by
note name over the entire chromatic scale, and a " GUITAR/BASS mode " for tuning to guitar
and bass string numbers.
• Compatible with seven-string guitars and six-string basses.
• Includes a Flat Tuning function, which lowers all pitches from one semitone to five semitones
(two and a half steps).
• Open Tuning function makes it easy to achieve DROP D, OPEN D/E/G/A, and DADGAD
tunings.
• OCTAVE ADJUST mode makes the octave adjustments required to maintain the correct pitch
when playing the frets.
• SOUND mode plays the reference tone.
• Accu-Pitch function produces a beeping tone to signal that the tuning is correct.
• AC adaptor jack for use with AC adaptor.
• Auto Power Off function helps prevent battery drain (only when batteries are used).
Power Switch [POWER]
Switches the power on and off.
Whenever the TU-15 has remained totally idle for
approximately thirty minutes, while running on battery
[SOUND]
power, the power is automatically switched off.
Button
To turn the power back on, first slide the POWER switch to
[OFF], then to [ON] again.
How to Use the Tuner
1. Connect the instrument to be tuned to the INPUT jack.
The built-in mic is used for tuning acoustic instruments. When using the mic, make sure that
nothing is connected to the INPUT or OUTPUT jacks, and place the TU-15 near the instrument.
* To prevent malfunction and/or damage to speakers or other devices, always turn down the volume, and
turn off the power on all devices before making any connections.
2. Slide the POWER switch to [ON].
The reference pitch is indicated in the display.
To change the reference pitch, press the [PITCH] button one or more times until the pitch you
want to set as the reference pitch appears in the display (the factory default setting is 440 Hz).
If the power has been turned off by the Auto Power Off function, slide the POWER switch to
[OFF], then to [ON] again.
3. Switch to AUTO mode .
Normally, " AUTO mode " is used. In this mode, note names and string numbers are indicated
automatically.
If " MANU " appears in the display, press the [AUTO/MANUAL] button so that " AUTO " is
shown.
4. Play a single note on the instrument.
The note name/string number for the note that is playing appears in the display.
The meter and Tuning Guide show how far the note is from the correct pitch.
5. Tune the instrument.
With the intended note name/string number appearing in the display, tune the instrument so
that both " " and " " of the Tuning Guide are lit, and the meter needle points to 0 (center
position).
When a stable pitch is achieved, the tuner makes a beeping sound, informing you that the
tuning is completed (with the Accu-Pitch function).
Flat Tuning
This lowers the actual pitch of all notes below the regular tuning (from one to five semitones, or
two and a half steps), and can be accomplished simply without changing the regular display.
Press the [FLAT] button and select the number of semitones the actual pitch is to be lowered
relative to the note appearing in the display.
No flat symbols appear when regular tuning is selected; " " indicates the pitch is lower by one
semitone, "
Displayed
Speaker
AC Adaptor Jack
Connect the AC adaptor (the optional
BOSS PSA series) here.
OUTPUT Jack
The signal of the instrument connected to the INPUT jack is output
from this jack. The tuner's circuitry is completely bypassed once you
place the POWER switch at the OFF position, so your instrument's
signal is output without any change in the tone quality.
INPUT Jack
Connect the guitar, bass guitar, or other
instrument to be tuned here.
[PITCH] Button
[AUTO/MANUAL] Button
[NOTE] Button
[FLAT] Button
[OPEN TUNING] Button
[OCT ADJ] Button
" a whole tone, and so on, with " " marks indicating a drop of five semitones.