Troubleshooting

If during use any of the following problems should occur, carefully examine the instrument to see if you can find out what the problem is, and try resolving it by following the sug- gestions below. If the instrument will still not function prop- erly refer to your dealer or to an Authorized Korg Service Center.

Problem

Possible remedy

Page

 

 

 

The instrument

Check that the AC adapter is correctly

10

will not turn on.

connected to the piano and the out-

 

 

let.

 

 

 

 

No sound.

(1) Make sure that the volume is not

10

 

set on 0. If it is, bring it up to an ade-

 

 

quate level.

 

 

 

 

 

(2) Make sure there is not a jack

11

 

plugged into one of the PHONES con-

 

 

nectors. This would turn the internal

 

 

speakers off. if so, unplug the jack.

 

 

 

 

 

(3) Make sure that the MIDI Local

51

 

function is not set on OFF. If it is, set it

 

 

to ON (or turn the instrument off and

 

 

then on again).

 

 

 

 

Appendix > Troubleshooting

Polyphony

The C-720 contains sampled sounds, which have been record- ed, analyzed and processed from the actual sounds of the orig- inal musical instruments. These sounds usually consist of one or more different samples reproduced by pressing a key. Each sample is played back by a single oscillator. Sounds using just one oscillator have a full polyphony of max. 62 voices, while sounds using two oscillators have a limited polyphony of max. 31 notes. Sounds using more oscillators have a more limited polyphony. When the number of notes exceeds the limit of the sound, some notes will be stopped, so that the new ones can be heard.

Furthermore, when playing in Layer mode with more than two notes, the max. polyphony depends on how many oscillators are used in total.

Please refer to the table on page 68 for more information about the number of oscillators used by each sound.

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Korg C-720 user manual Troubleshooting, Polyphony, Problem Possible remedy
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C-720 specifications

The Korg C-720 is a sophisticated digital piano that embodies the pinnacle of modern musical technology and artistry. Designed to meet the needs of both aspiring musicians and seasoned professionals, the C-720 combines exceptional sound quality, advanced features, and an elegant design.

At the heart of the C-720 is Korg's Enhanced Piano Sounds technology, which provides a rich and authentic sound experience. The instrument boasts a comprehensive selection of meticulously sampled grand pianos, electric pianos, and other keyboard instruments. Each sound has been crafted using advanced sampling techniques that capture the nuance and character of the original instruments. The C-720 also features Korg's Dynamic Touch technology, allowing for responsive playing that adapts to the touch of the performer, enabling subtle expression through dynamics.

One of the standout features of the C-720 is its Natural Weighted Hammer Action (NH) keyboard. This keyboard action delivers the genuine feel of an acoustic piano, with weighted keys that respond appropriately to both soft and powerful playing. Coupled with the sound engine, this results in a performance experience that closely mimics traditional pianos.

Additionally, the C-720 is equipped with a sophisticated digital effects processor. This processor includes a variety of effects such as reverb, chorus, and delay, which can enhance the overall sound and provide depth to performances. The vast array of customizable settings allows musicians to craft their unique soundscapes, whether they are performing in a live setting or recording in a studio.

Connectivity options are ample in the C-720, with MIDI in/out slots for interfacing with other instruments and computers, as well as USB connectivity. This allows for easy integration into music production environments, making it a versatile choice for modern musicians. The built-in speakers deliver a full-bodied audio experience, while headphone outputs provide for private practice.

The Korg C-720 also includes a range of onboard features such as metronome, recording and playback functions, and various built-in music styles, providing musicians with tools to enhance their practice and performance. Its elegant design, available in classic wood finishes, ensures that it will be a beautiful addition to any music room or stage setup.

Overall, the Korg C-720 is a powerful and sophisticated digital piano that caters to the demands of today's musicians, combining traditional playing feel with cutting-edge technology and features.
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