KORG EFGSJ1 Sledgehammer Clip-On Tuner Owner’s Manual
- June 9, 2024
- KORG
Table of Contents
KORG EFGSJ1 Sledgehammer Clip-On Tuner Owner’s Manual
Precautions
Location
Using the unit in the following locations can result in a malfunction.
- In direct sunlight
- Locations of extreme temperature or humidity.
- Excessively dusty or dirty locations.
- Locations of excessive vibration.
- Close to magnetic fields.
Power supply
Be sure to turn the power switch to OFF when the unit is not in use. Remove
the battery in order to prevent it from leaking when the unit is not in use
for extended periods.
Interference with other electrical devices
Radios and televisions placed nearby may experience reception interference.
Operate this unit at a suitable distance from radios and televisions.
Handling
To avoid breakage, do not apply excessive force to the switches or controls.
Care
If the exterior becomes dirty, wipe it with a clean, dry cloth. Do not use
liquid cleaners such as benzene or thinner, or cleaning compounds or flammable
polishes. Keep this manual After reading this manual, please keep it for later
reference.
Keeping foreign matter out of your equipment
Never set any container with liquid in it near this equipment. If liquid gets
into the equipment, it could cause a breakdown, fire, or electrical shock. Be
careful not to let metal objects get into the equipment.
THE FCC REGULATION WARNING (for USA)
NOTE: This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to Part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
If items such as cables are included with this equipment, you must use those included items. Unauthorized changes or modification to this system can void the user’s authority to operate this equipment.
Notice regarding disposal (EU only)
When this “crossed-out wheeled bin” symbol is displayed on the product,
owner’s manual, battery, or battery package, it signifies that when you wish
to dispose of this product, manual, package or battery you must do so in an
approved manner. Do not discard this product, manual, package or battery along
with ordinary household waste. Disposing in the correct manner will prevent
harm to human health and potential damage to the environment. Since the
correct method of disposal will depend on the applicable laws and regulations
in your locality, please contact your local administrative body for details.
If the battery contains heavy metals in excess of the regulated amount, a
chemical symbol is displayed below the “crossed-out wheeled bin” symbol on the
battery or battery package.
IMPORTANT NOTICE TO CONSUMERS
This product has been manufactured according to strict specifications and
voltage requirements that are applicable in the country in which it is
intended that this product should be used. If you have purchased this product
via the internet, through mail order, and/or via a telephone sale, you must
verify that this product is intended to be used in the country in which you
reside.
WARNING: Use of this product in any country other than that for which it
is intended could be dangerous and could invalidate the manufacturer’s or
distributor’s warranty. Please also retain your receipt as proof of purchase
otherwise your product may be disqualified from the manufacturer’s or
distributor’s warranty.
CALIFORNIA USA ONLY
This Perchlorate warning applies only to primary CR (Manganese Dioxide)
Lithium coin cells sold or distributed ONLY in California USA. “Perchlorate
Material–special handling may apply, See
www.dtsc.ca.gov/hazardouswaste/perchlorate.”
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1) This device may not
cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation. CAN
ICES-3 B / NMB-3 B.
Parts of the Sledgehammer
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 battery indicator ( ) will light up. The Sledgehammer will continue to function for a while longer, but tuning will become less accurate. Replace the battery as soon as possible.
- While lightly pressing the part marked A, pull the battery holder in the direction of the arrow to slide it out.
- Making sure to observe the correct polarity, insert the battery so that the “+” side of the battery is visible.
- Return the battery holder to its original position.
Backlight
The backlight will illuminate brightly when sound is input or when a button is pressed. When there has been no user input for approximately three seconds, the backlight will dim slightly in order to prevent the battery from being depleted.
Tuning
Tuning procedure
- Turn the left shuttle switch upward. Each time you turn the shuttle switch, the Sledgehammer 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.
- If necessary, change the tuner mode, calibration (reference pitch) and flat/capo settings. The procedure with the tuner mode set to chromatic (factory default; no mode indicator) is described below.
- Play a single note on your instrument. The display will show the name of the note that’s closest to the pitch detected. Tune your instrument to the correct pitch so that the desired note name appears on the display.
- Once again play a single note on your instrument, and adjust the tuning so that the center segment of the meter (indicated by ) is lit up.
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 tuner mode (M)
Each time you turn the left shuttle switch downward, the tuner mode changes,
with the current mode shown by the mode indicator. Chromatic (no indicator) →
Guitar ( ) → Bass ( ) → Chromatic… In addition, in the guitar and bass modes,
the string number closest to the detected pitch appears to the left of the
note name indicator.
Note name indicators for guitar mode:** 7B, 6E, 5A, 4D, 3G, 2B, 1E
In guitar mode, the 1st string overtightening warning indicator ( ) will
light to help prevent the 1st string from breaking as a result of
overtightening.
Note name indicators for bass mode: LB, 4E, 3A, 2D, 1G, HC (LB stands for
low B, and HC stands for high C.)
*Calibration (reference pitch) settings (M)**
Each time you turn the right shuttle switch upward, the calibration value
(reference pitch) increases in 1 Hz steps. The setting range is between 436
and 445 Hz. 440 → 441 → 442 … 445 → 436 → 437 … 440 → 441…
Keep the right shuttle switch turned upward for at least one second to reset
the calibration to 440 Hz.
*Specifying flat/capo settings (M)**
Each time you keep the right shuttle switch turned downward, the setting
changes between flat and capo, with the current setting shown by the FLAT/CAPO
indicator. Flat ( ) → Capo ( ) → Flat ( )…
To change the flat setting, turn the right shuttle switch
downward while the FLAT indicator is lit up.
The setting range is between 1 and 5 semitones lower. 1 → 2 → 3 → 4 → 5 → 0 →
1…
To change the capo setting, turn the right shuttle switch
downward while the CAPO indicator is lit up.
The setting range is between 1 and 7 semitones higher. 1 → 2 → 3 → 4 → 5 → 6 →
7→ 0 → 1…
When the flat or capo setting is changed 0, the FLAT/CAPO indicator turns off
after a few seconds, and the default setting (no flat or capo tuning) is
applied.
Both flat and capo tunings can be set in guitar mode, but only flat tuning
can be set in bass mode, and neither flat nor capo tuning can be set in
chromatic mode.
Attaching to the instrument and range of motion
The Sledgehammer tunes by picking up the vibrations of the instrument.
Therefore, be sure to attach the Sledgehammer to the headstock of your
instrument in order to tune it. In addition, the Sledgehammer can be freely
moved so that the display is easy to read.
The Sledgehammer may be damaged if you apply excessive force within its range
of motion, or attempt to move it beyond its intended range of motion.
Please carefully attach the Sledgehammer to your instrument. Leaving the
Sledgehammer 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): Chromatic A0 (27.50 Hz)–C8 (4186 Hz) Guitar B1 flat5
(46.25 Hz)–E4 capo7 (493.88 Hz) Bass B0 flat5 (23.12 Hz)–C3 (130.81 Hz)
Precision: +/-1 cent
Reference pitch: A4 = 436–445 Hz (1 Hz steps)
Flat tuning: 1–5 semitones (in semitone steps)
Capo tuning: 1–7 semitones (in semitone steps)
Dimensions: 63 mm(W) X 62 mm(D) X 52 mm(H) 2.48’’ (W) X 2.44’’ (D) X 2.05
’’ (H)
Weight: 25 g/0.88 oz. (including battery)
Battery life: approximately 8 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, Tuner mode: Chromatic, calibration: 440 Hz, FLAT/CAPO: normal)
- Specifications and appearance are subject to change without notice for improvement.
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>