Korg GT-12 Manuel Du Propriétaire page 2

6. Play a single note on your instrument, and tune it so that the needle
of the meter is at the 0 position (center) and both indicators of the
tuning guide are lit.
While tuning, do not allow extraneous sounds to enter the mic.
AUTO : Meter mode (Auto)
MANUAL : Meter mode (manual)
SOUND : Sound mode (manual)
String number
(not displayed
for CHROMATIC)
Reference pitch
(calibration)
Remaining
battery power
Tuning is correct when the needle indicates the 0 position
(center) and both tuning guide indicators are lit.
Sound mode
1. Make the settings described in steps 1–4 of "Meter mode."
2. Press the [SOUND] switch to enter Sound mode (manual).
3. Press the [NOTE] switch until the note to which you wish to tune
appears in the LCD display.
4. Listen to the pitch sounded by the GT-12, and tune your instrument
accordingly.
• To return to Meter mode, press the [AUTO/MANUAL] switch.
Flat tuning
When the [TUNING TYPE] dial is set to GUITAR or BASS, you can use
Meter mode or Sound mode to tune to a pitch that is lowered by 1–4
semitones ( – ) for the specified note.
1. As described in "Meter mode" or "Sound mode," make the note you
wish to flatten by 1–4 semitones appear in the LCD display.
Set the [TUNING TYPE] dial to either GUITAR or BASS. Flat tun-
ing can only be used for these selections.
2. Press the [FLAT] switch to select the number of semitones that you
wish to lower the selected note.
The LCD screen will indicate –
3. Tune your instrument.
Replacing the batteries, and
the memor y function
As the batteries begin to run down, accurate tuning will become more
difficult. Check the battery indicator in the LCD display, and replace the
batteries as soon as necessary.
The batteries are also used to preserve the memory when the power is
turned off, allowing the reference pitch, meter mode (manual), and the
note you selected for Sound mode to be remembered (Memory function).
When the batteries are removed or if they run down completely, the
various settings preserved by the memory function will be reset. (If an
AC adapter is connected to the GT-12 and plugged into an AC outlet,
the settings will not be reset.)
Even if you are using the GT-12 with an AC adapter, you should leave the
batteries installed.
1. While lightly pressing
this area, slide the cover
in the direction of the
arrow to open the battery
cover.
3. Close the battery
cover.
Note name
(C, C , D, E , E, F,
F , G, G , A, B , B)
Flat tuning
Octave
(displayed only
for CHROMATIC)
(1–4 semitones).
2. Insert two AA
batteries. Be sure to
Adjustment
observe the correct
control
polarity (+, –).
Adjusting the zero point of the meter needle
When the GT-12 has been used for an extended period, normal aging
may cause the meter needle to drift away from the 0 position (center). To
ensure accurate tuning, please reset the meter needle to the 0 position.
1. While holding down the [AUTO/MANUAL] switch, turn the
power switch ON, and check whether the meter needle indicates
the 0 position.
2. If it does not indicate the 0 position, refer to the diagram in the
above section "Replacing the batteries, and the memory function,"
open the battery cover, and use a small Philips (+) screwdriver
(such as a jeweler's screwdriver) to rotate the adjustment control so
that the needle indicates 0.
3. After making the adjustment (or if the meter needle indicated 0 in
step 1), press any one of the switches to return to normal operation,
and close the battery cover.
Specifications
Scale : 12 note equal temperament
Range : A0–C8
Reference tone : C2–C7 (5 octaves)
Tuning modes : Meter (auto/manual)
Sound (manual)
Flat tuning : 1–4 semitones (semitone steps)
Calibration range : A4=438–445 Hz (1 Hz steps)
Detection accuracy : +/-1 cent
Sound accuracy : C2 (65.4 Hz)–B5 (987.8 Hz) +/-0.72 cents or
better
C6 (1047 Hz)–C7 (2093 Hz) +/-1.45 cents or
better
Tuning guide range : Auto (chromatic)
-50 cents– -3 cents
-3 cents– +3 cents
+3 cents– +50 cents
Manual
-500 cents– -3 cents
-3 cents– +3 cents
+3 cents– +500 cents
Connectors : INPUT (1/4" mono), OUTPUT (1/4" mono),
DC IN (9V)
Power supply : AA batteries x 2 (3V), or AC adapter (
Battery life : Approximately 100 hours (Alkaline batteries,
Meter mode, A4 continuous input)
Dimensions (WxHxD) : 140.5x60.0x39.5mm (5-1/2" x 2-3/8" x 1-9/16")
Weight : 185g (6.53 oz) : including the battery
Included items : AA batteries x 2 for checking operation
Options (sold separately): AC adapter (
* Appearance and specifications are subject to change without notice.
Using the tilt slit
The slit on the back of the GT-12 allows you to tilt it for more convenient
operation.
To tilt the unit, insert a coin etc. as shown below.
:
: ,
:
:
: ,
:
)
)