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Midi, Troubleshooting, Specifications – KORG Digital Piano SP-170S User Manual

Page 6: Pitch control function (tuning), Using the midi out jack, Changing the midi channel

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Pitch Control function (Tuning)

When you’re playing together with other instruments, you

can use this the Pitch Control function to fix any slight dif-

ferences in pitch between instruments. You can adjust the

tuning of the SP-170S in half-step (0.5) Hz intervals over a

range of 427.5–452.5 Hz (Hertz) by using the E5 and F5 keys.
• Press and hold down the PIANO PLAY and SOUND but-

tons (on the right end of the keyboard), then press the E5

key to lower the pitch in 0.5Hz step seach time your press

it, or press the F5 key repeatedly to raise the pitch in 0.5Hz

steps each time you press it.

• To reset the pitch to 440Hz, press and hold down the PIA-

NO PLAY and SOUND buttons, and press the E5 and F5

keys simultaneously.

The default setting (when you turn on the unit) is A4=440Hz.

MIDI

Using the MIDI OUT jack

The MIDI OUT jack transmits MIDI messages. When you

play the keyboard, the MIDI messages will be output to con-

trol (e.g, play the sound of) an external MIDI device. Use an

optional MIDI cable to connect the MIDI OUT jack of the SP-

170S to the MIDI IN jack of an external MIDI device.

Changing the MIDI channel

If you’re using the SP-170S as a controller to play sounds

from a connected MIDI device, the MIDI channel of the SP-

170S must match the MIDI channel the external MIDI device.

To change the MIDI channel (1–16) that MIDI data is being

transmitted from via the MIDI OUT jack on the rear panel,

press and hold down the PIANO PLAY and SOUND buttons

simultaneously, and press one of the keys ranging from C4

to D#5.
The default MIDI channel (when you turn on the unit) is “1.”

Transmitting Program Change and Control

Change messages

You can change the program number of the connected MIDI

device from the SP-170S.

When you select a preset sound on the SP-170S (see “Play-

ing Different Sounds” on page 2), it transmits a MIDI Pro-

gram Change number (PC#) as shown in the table below.

To disable this transmission (DIS), press and hold down the

PIANO PLAY and SOUND buttons simultaneously, and then

press the G#3 key. To enable this transmission (ENA), repeat

the previous procedure but press the A3 key instead.

The SP-170S also transmits Control Change messages to con-

trol Damper (CC64), Bank Select (CC00), etc. for the connected

MIDI device. To disable this transmission (DIS), press and

hold down the PIANO PLAY and SOUND buttons simultane-

ously, and then press the A#3 key. To enable this transmission

(ENA), repeat the previous procedure but press the B3 key

instead.
The default setting (when you turn on the unit) is ENA

(transmitted) for both Program and Control Change mes-

sages.
Program Change Table

BANK# PC# Sound

BANK# PC# Sound

0

0

Piano 1

0

7

Clavichord

0

1

Piano 2

0

11

Vibraphone

0

4

E. Piano 1

0

19 P. Organ

0

5

E. Piano 2

0

16 E. Organ

0

6

Harpsichord

0

48 Strings

CC00: Bank Select (MSB) for each sound is assigned to 121

Troubleshooting

If you perceive any malfunction, check the following sugges-

tions. If the problem persists, contact your nearest Korg dis-

tributor.
Power does not turn on

• Make sure that the AC adapter is properly connected to the

SP-170S and the AC outlet.

• Make sure that the power LED is illuminated.
No sound from the speakers

• Rotate the VOLUME knob on the rear panel to the right to-

ward MAX.

• The speakers will be muted if the headphones are connected.
Sound is interrupted

• The preset sounds of the SP-170S have been created by sam-

pling (recording) sounds of actual musical instruments.

When you press a key, some sounds play a single piece of

sampled data, while other sounds play two pieces of sampled

data. The SP-170S uses two pieces of data for most of its pre-

set sounds. When one of these two-sample sounds is selected

(regardless of whether the damper pedal is being pressed),

the maximum polyphony is 60 notes. However, with two

Piano sounds, the maximum polyphony is 120 notes. If the

maximum polyphony is exceeded, some of the notes will be

lost.

The pitch or tone of the piano sounds wrong in some key regions

• The SP-170S’s piano sounds replicate the sound of an actual

piano as faithfully as possible. This means that in some re-

gions of the keyboard, you may feel that the overtones seem

stronger, or that the tone or pitch seems wrong. This is not a

malfunction.

Pedal is not effective

• Make sure that the pedal cable is properly connected.
Connected MIDI device does not respond to MIDI messages

• Make sure that all MIDI cables are properly connected.

• Make sure that the SP-170S is transmitting MIDI data on the

same MIDI channel as the connected MIDI device.

Specifications

Keyboard

NH Keyboard: 88 note (A0–C8)

Maximum polyphony

120 notes / 60 notes (Stereo)

Sounds

Ten sounds

Jacks

Headphones x 2 (also function as outputs),
MIDI OUT, Damper SW (Pedal )

Amp output

9 W × 2

Speakers

Oval (10cm x 5cm) x 2

Power supply

DC 12 V

Power Consumption

9 W

Weight

12kg / 26. 46 lbs (excluding music stand)

Dimensions (W x D x H)

1312 Ч 325 Ч 144 mm / 51. 65" Ч 12. 8" Ч 5. 67"
(including projections, but excluding music
stand)

Included items AC adapter (

), Music stand, Pedal

* Specifications and appearance are subject to change without

notice for improvement.