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Parts of the Sledgehammer Pro
Note name indicator
Left
shuttle switch
Installing the battery
Make sure to turn the power off before you install or replace the battery.
When it is time to replace the battery, the note name indicator will
blink. Immediately replace the battery with a new one.
1. While lightly pressing the part marked A, pull the battery holder
in the direction of the arrow to slide it out.
2. Making sure to observe the correct polarity, insert the battery so
that the "+" side of the battery is visible.
3. Return the battery holder to its original position.
Tuning procedure
1. Turn the left shuttle switch upward. Each time you turn the shuttle
switch, the Sledgehammer Pro will be turned on or off.
If the power is left on for approximately 3 minutes without any user
input, it will turn off automatically.
2. If necessary, change the meter mode and calibration (reference
pitch).
3. Play a single note on your instrument.
The note name closest to the detected pitch appears in the note
name indicator.
Tune your instrument to the correct pitch so that the desired note
name appears on the display.
4. Tune the instrument by playing a single note and checking the
meter.
The tuning indications differ depending on the selected meter
mode setting.
Even if the pitch is within the range of detection, it may not be possible
to detect the pitch of an instrumental sound that contains large numbers
of overtones or a sound that has a rapid decay.
The meter may respond to vibrations it picks up from the environment;
however, this will not affect tuning of the instrument.
Setting the meter mode (*M)
Each time you turn the left shuttle switch downward, the meter mode
changes. A number indicating the meter mode appears in the note
name indicator for a few seconds.
1 (Regular) → 2 (Strobe) → 3 (Half strobe) → 1 (Regular) ...
1: Regular meter
Tune your instrument so that the center LED of the meter display is lit
up. The LED illumination will move from the center toward the right
if the note is sharp, or from the center toward the left if the note is flat.
In tune.
The pitch is flat.
Meter display
Right
shuttle switch
Battery holder
A
Tuning
The pitch is sharp.
2: Strobe meter
Tune your instrument so that the illumination stops flowing in the
meter display. Since the strobe meter has higher precision, it allows
you to tune with greater accuracy. The illumination will flow from
left to right if the note is sharp, or from right to left if the note is flat.
The pitch is flat.
In tune.
3: Half-strobe meter
Tune your instrument so that the stream stops and only the center
LED is lit up. The right side of the meter display will strobe if the note
is sharp, and the left side of the meter display will strobe if the note
is flat. When the pitch is correct, only the center LED will light up.
The pitch is flat.
In tune.
Calibration (reference pitch) settings (*M)
Each time you turn the right shuttle switch upward (or downward),
the calibration value (reference pitch) increases (or decreases) in 1 Hz
steps. The last digit of the setting appears in the note name indicator
for a few seconds.
6 (436Hz)...
9 (439Hz)
0 (440Hz)
The setting range is between 436 and 445 Hz.
Attaching to the instrument and range of motion
The Sledgehammer Pro tunes by picking up the vibrations of the
instrument. Therefore, be sure to attach the Sledgehammer Pro to the
headstock of your instrument in order to tune it. In addition, the Sledge-
hammer Pro can be freely moved so that the display is easy to read.
The Sledgehammer Pro may be damaged if you apply excessive force within
its range of motion, or attempt to move it beyond its intended range of motion.
45°
30°
30°
45°
Please carefully attach the Sledgehammer Pro to your instrument. Leaving
the Sledgehammer Pro attached for a long time may damage or mark the
instrument's surface.
Depending on various factors such as age-related change or the surface
finish, there is a possibility that your instrument may be damaged by
attaching this product.
Specifications
Scale:
12-note equal temperament
Range (sine wave): A0 (27.50 Hz)–C8 (4186 Hz)
Precision:
+/-0.1 cent
Reference pitch:
A4 = 436–445 Hz (1 Hz steps)
Dimensions:
62 mm(W) X 62 mm(D) X 53 mm(H)
2.44'' (W) X 2.44'' (D) X 2.09 '' (H)
Weight:
28 g/0.99 oz. (including battery)
Battery life:
approximately 14 hours
(tuner continuously operating, A4 input)
Included items:
CR2032 lithium battery (3V)
*M Settings are remembered even when the power is off. However,
settings will be initialized when you replace the battery (default,
Meter mode: Regular, calibration: 440 Hz)
• Specifications and appearance are subject to change without notice
for improvement.
The pitch is sharp.
The pitch is sharp.
... 5 (445Hz)
1 (441Hz)
2 (442Hz)
180°
360°
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