Introduction

The Casio 61-Key Portable Keyboard CT-X8000IN is a versatile instrument designed for musicians of all skill levels, featuring an advanced AiX sound source that delivers rich and expressive tones. Launched in 2019, this keyboard is manufactured by Casio, a well-known brand in the music industry. Priced at approximately $225, the CT-X8000IN offers 800 tones, including 43 Indian tones, and 250 rhythms, making it ideal for a variety of musical styles and educational purposes.

Specifications

General Guide

All of the illustrations in this manual show the Casio CT-X8000IN.

Some of the button names shown here include the mark. This indicates that you need to long-press the button to perform its operation.

This manual uses the numbers and names below to refer to buttons, keys, and controllers.

1. (Power) button
2. VOLUME knob
3. Display
4. CATEGORY button
5. TONE button
6. RHYTHM button
7. SONG BANK, AUDIO button
8. RECORD/STOP, AUDIO PLAY/STOP button
9. PART, MIXER button
10. FUNCTION, SET, EDIT button
11. Dial
12. Number keys
13. [–], [+] keys
14. INTRO, PART SELECT button
15. VARIATION/FILL-IN 1, REPEAT button
16. VARIATION/FILL-IN 2, A-B button
17. VARIATION/FILL-IN 3, REW button
18. VARIATION/FILL-IN 4, FF button
19. ENDING/SYNCHRO START, PAUSE button
20. START/STOP, PLAY/STOP button
21. SYNCHRO STOP button
22. ACCOMP, MUSIC PRESET button
23. FREEZE button
24. BANK button
25. STORE button
26. PHRASE PAD buttons
27. STOP button
28. REGISTRATION buttons
29. METRONOME, BEAT button
30. TEMPO buttons
31. TAP TEMPO button
32. PORTAMENTO button
33. TOUCH ON/OFF, SENSITIVITY button
34. AUTO HARMONIZE/ARPEGGIATOR, TYPE button
35. SPLIT, SPLIT POINT button
36. UPPER LAYER, LOWER LAYER button
37. OCTAVE button
38. TRANSPOSE buttons
39. MODULATION/ASSIGNABLE button (CT-X9000IN only)
40. PITCH BEND wheel
41. CHORD root names
42. Percussion instrument list (CT-X9000IN only)
43. TONE GROUP SELECT button
44. TONE Category buttons
45. RHYTHM GROUP SELECT button

46. RHYTHM Category buttons
    Back

    

47. USB flash drive port

48. USB port
    BACK

    

49. LINE OUT R, L/MONO jacks (CT-X9000IN only)
50. PHONES jack PHONES/OUTPUT jack (CT-X8000IN)
51. MIC IN jack (CT-X9000IN only)
52. MIC VOLUME knob (CT-X9000IN only)
53. AUDIO IN jack
54. PEDAL1 jack
55. PEDAL2/EXPRESSION jack
56. DC 12V terminal (CT-X8000IN)

Note: In this manual, the PHONES/OUTPUT jack on the CT-X8000IN is referred to as the PHONES jack.

In this manual, this jack is referred to as the fk PHONES jack.

Display

1. Tone indicator

   Rhythm indicator

   Song Bank indicator

   Music Preset indicator

2. Number/setting value display (left), name display (right)
3. Tempo, measure, beat
4. Keyboard part indicators
5. Chord name
6. Auto Accompaniment indicators
7. Mixer info display area
8. Registration display, event edit display
   Other Indicators

Preparing the Music Stand

Returning the Digital Keyboard to Its Factory Default Settings

There are two ways to reset the Digital Keyboard to its default settings: a “setting reset” that initializes settings only without deleting data, and a “factory reset” that initializes settings and deletes all data, returning the Digital Keyboard to the state it was in when it left the factory.

Preparing a Power Supply

Your Digital Keyboard uses an AC adaptor for power.

Using the AC Adaptor

Make sure that you use only the AC adaptor specified for this Digital Keyboard. Use of a different type of AC adaptor can cause malfunction.

Connecting the AC Adaptor

Specified AC Adaptor: AD-E24250LW (JEITA Standard plug)

Important

• Never connect the AC adaptor (JEITA Standard, with unified polarity plug) that comes with this Digital Keyboard to any other device besides this Digital Keyboard. Doing so creates the risk of malfunction.
• Be sure to turn off Digital Keyboard power before connecting or disconnecting the AC adaptor.
• The AC adaptor will become warm to the touch after very long use. This is normal and does not indicate malfunction.
• Note the following important precautions to avoid damage to the power cord.

During Use

• Never pull on the cord with excessive force.
• Never repeatedly pull on the cord.
• Never twist the cord at the base of the plug or connector.

During Movement

• Before moving the Digital Keyboard, be sure to unplug the AC adaptor from the power outlet.

During Storage

• Loop and bundle the power cord, but never wind it around the AC adaptor.
• Never insert metal, pencils, or any other objects into the product’s DC12V (CT-X8000IN) terminal. Doing so creates the risk of accident.
• Do not try to use the power cord that comes with the product with another device.
• Use the AC adaptor so its label surface is pointed downwards. The AC adaptor becomes prone to emitting electromagnetic waves when the label surface is facing upwards.
• Plug the AC adaptor into a power outlet that is close to the Digital Keyboard. This lets you immediately unplug from the power outlet should any problem occur.
• The AC adaptor is intended for indoor use only. Do not leave it in a location where it can become wet. Also, do not place a vase or any other container of liquid on the AC adaptor.
• Make sure that the AC adaptor does not become covered with a newspaper, table cloth, curtain, or any other type of fabric.
• If you do not plan to use the Digital Keyboard for a long time, unplug the AC adaptor from the power outlet. 
• The AC adaptor cannot be repaired. If your AC adaptor malfunctions or becomes damaged, you need to purchase a new one.
• AC Adaptor Usage Environment 
  • Temperature: 0 to 40°C
  • Humidify: 10% to 90%RH
  • Output Polarity: &

Adjusting Display Contrast

1. Press

2. Press the number key to display “Other”.

   

3. Press the number key.

4. Use the and number keys to display “Contrast”.

   

5. Use [–] and [+] or the dial to change the setting value.
6. When the setting is the way you want, long-press the (EXIT) 12 number key to exit the setting screen.

Connecting to Audio Equipment

Digital Keyboard Audio Output

Your Digital Keyboard outputs audio from its built-in speakers and/or the PHONES jack. (CT-X9000IN: Also outputs audio from the LINE OUT jacks.)

There will be an indicator mark next to [SPEAKER] while built-in speaker output is enabled.

• There will be no indicator mark next to [SPEAKER] while built-in speaker output is disabled.
  • Built-in speaker output is disabled in the cases described below.
    • When there is a plug in the PHONES jack.*
    • When the following setting is disabled (Off): Speakers 
  • (Speaker) 3 Speaker on/off (Enabled) (page EN-112).
• The Digital Keyboard automatically adjusts the sound to make it suitable for headphones (or, in the case of the CT-X9000IN, the LINE OUT jacks) while speaker output is disabled, and for speakers while speaker output is enabled.

When the following setting is disabled (Off): Speakers (Speaker) 3 Enabled when PHONES connected (PhoneSpk)

IMPORTANT

If there is no sound output even though there is an indicator mark next to [SPEAKER], check the current settings of the 2 VOLUME knob and/or volume related settings.
To enable and disable speaker output

Perform the procedure under “To configure function settings with the button” and configure the following setting: Speakers (Speaker) 3 Speaker on/off (Enabled) 

To output from the speakers while headphones are connected

Perform the procedure under “To configure function settings with the button” and enable the following setting: Speakers (Speaker) 3 Enabled when PHONES connected (PhoneSpk). This will leave speaker output enabled even if there is a plug in the phone jack.

Using Headphones

Using headphones normally cuts off* output from the built-in speakers, which means you can practice playing even late at night without disturbing others.

When the following setting is disabled (Off): Speakers (Speaker) 3 Enabled when PHONES connected (PhoneSpk)

IMPORTANT

• Before connecting headphones, be sure to use 2 VOLUME to turn the volume down to a low level. After connecting, you can adjust the volume to the level you want.
• Do not listen to very high volume output over headphones for long period. Doing so creates the risk of hearing damage.
• If you are using headphones that require an adaptor plug, make sure you do not leave the adaptor plugged in when removing the headphones.

NOTE

Headphones do not come with the Digital Keyboard. Use commercially available headphones. 

Outputting Keyboard Notes to Audio Equipment

You can connect audio equipment or a music amplifier to the Digital Keyboard and then play through external speakers for more powerful volume and better sound quality.

• Turn off the external device when making connections. After connecting, turn down the Digital Keyboard and external device volume levels whenever turning power on or off.
• After connecting, turn on the Digital Keyboard and then the external device.
• If keyboard notes sound distorted when they are sounded from external audio equipment, lower the Digital Keyboard’s volume setting.

To connect an external device to the Digital Keyboard’s PHONES jack

Connection requires commercially available connecting cords, supplied by you.

• The connecting cords should have a stereo standard plug on one end and a plug that matches the configuration of the external device on the other end.

  

50 PHONES jack (Stereo standard jack (6.3mm)

To connect an external device to the Digital Keyboard’s LINE OUT jacks

Connection requires commercially available connecting cords, supplied by you.

Connecting to Audio Equipment (Figure 1)

Use commercially available cables to connect the external audio equipment to the Digital Keyboard’s LINE OUT jacks as shown in Figure 1. LINE OUT R jack output is right channel sound, while LINE OUT L/MONO jack output is left channel sound. It is up to you to purchase connecting cables like the ones shown in the illustration for connection of audio equipment. Normally in this configuration you must set the audio equipment’s input selector to the setting that specifies the terminal (such as AUX IN) to which the Digital Keyboard is connected.

Connecting to a Musical Instrument Amplifier (Figure 2)

Use commercially available cables to connect the amplifier to the Digital Keyboard’s LINE OUT jacks as shown in Figure 2. LINE OUT R jack output is right channel sound, while LINE OUT L/MONO jack output is left channel sound. Connecting to the LINE OUT L/MONO jack only outputs a mixture of both channels. It is up to you to purchase a connecting cable like the one shown in the illustration for connection of the amplifier.

Description

The Casio CT-X8000IN boasts a sleek and durable design, making it easy to transport to gigs or practice sessions. The keyboard features a backlit LCD display that provides clear visibility of the various functions and settings. With its intuitive layout, users can quickly navigate through the extensive library of sounds and rhythms.

The keyboard also includes a built-in lesson system, which is particularly useful for beginners. This feature allows users to practice along with built-in songs and exercises, helping to improve their skills.

Configuring Function Settings

Use the procedures in this section to configure master Digital Keyboard settings. The procedure uses the button.

IMPORTANT

When power is turned off by pressing 1 (power) or by triggering of Auto Power Off (page EN-9) while Auto Resume (page EN-10) is turned off, all settings, except for those below, are returned to their initial defaults. Equalizer, Tuning, Registration Memory Freeze Target, Pedal 2 type, Expression pedal calibration, Tap rhythm start, Examination Mode, Display contrast

To configure function settings with the button

1. Press .
   This displays the [FUNCTION] indicator and the main menu item.

   

   The display shown here is one example for explanatory purposes. The actual display that appears when you press is different.

2. Use the [1] () and [3] () 12 number keys to display the menu item you want to change.
   • If the [ENTER] 12 indicator is displayed, execute the steps below. If it is not displayed, advance to step 3.
     1. Press the [6] (ENTER) bm number key. This changes to the sub-menu item display.
     2. Use the [1] () and [3] () keys to display the sub-menu for the changes you want to make.
   • After the sub-menu item appears, advance to step 3.
   • To return to a main menu item from a sub-menu item, press the [4] (EXIT) 12 number key.
   • If the [ENTER] indicator is displayed while a sub-menu item is displayed, it means there is another sub-menu under the currently displayed one. In this case, repeat steps (1) and (2).
3. Use 13 [–] and [+] or the 11 dial to change the setting value.
   • Pressing the [0] (NUM) 12 number key displays the [NUM] indicator, indicating that numeric input with the 12 number keys is enabled (page EN-14). However, a setting item that inputs a value with a decimal part, only the integer part can be input using the 12 number keys. The decimal part must be specified using 13 [–] and [+] or the 11 dial.
4. When the setting is the way you want, long-press the [4] (EXIT) 12 number key to exit the setting screen. This causes the [FUNCTION] indicator to disappear.

Setup Guide

To set up the Casio CT-X8000IN, 

1. Start by unpacking the keyboard and its accessories. 
2. Connect the power adapter or insert batteries as per your preference. 
3. Plug in any external devices such as headphones or a MIDI interface if needed.
4. Turn on the keyboard and follow the on-screen instructions to select your preferred language and other initial settings. 
5. You can then explore the various modes and functions by using the navigation buttons and the LCD display.

Connecting a Computer

You can connect the Digital Keyboard to a computer and exchange MIDI data between them. You can send play data from the Digital Keyboard to music software running on your computer, or you can send MIDI data from your computer to the Digital Keyboard for playback.

Minimum Computer System Requirements

The following shows the minimum computer system requirements for sending and receiving MIDI data. Check to make sure that your computer complies with these requirements before connecting the Digital Keyboard to it.

Operating System

• Windows Vista *1
• Windows 7 *2
• Windows 8.1 *3
• Windows 10 *4

macOS (OS X/Mac OS X) 10.7, 10.8, 10.9, 10.10, 10.11, 10.12

1. Windows Vista (32-bit)
2. Windows 7 (32-bit, 64-bit)
3. Windows 8.1 (32-bit, 64-bit)
4. Windows 10 (32-bit, 64-bit)

USB port

IMPORTANT: Never connect to a computer that does not conform to the above requirements. Doing so can cause problems with your computer.

NOTE: For the latest news about supported operating systems, visit the website at the URL below. http://world.casio.com/ 

Connecting the Digital Keyboard to Your Computer

IMPORTANT: Make sure you follow the steps of the procedure below exactly. Connecting incorrectly can make data send and receive impossible.

1. Turn off the Digital Keyboard and then start up your computer.
   Do not start up the music software on your computer yet!
2. After starting up your computer, use a commercially available USB cable to connect it to the Digital Keyboard.
   Use a USB 2.0 or 1.1 A-B connector-type USB cable.
3. Turn on the Digital Keyboard.
   If this is the first time you are connecting the Digital Keyboard to your computer, the driver software required to send and receive data will be installed on your computer automatically.
4. Start up commercially available music software on your computer.
5. Configure the music software settings to select “CASIO USB-MIDI” as the MIDI device.
   For information about how to select the MIDI device, see the user documentation that comes with the music software you are using.

IMPORTANT: 

• Be sure to turn on the Digital Keyboard first before starting up your computer’s music software.
• USB send and receive is disabled during playback of a Song Bank song.

MIDI Settings

Keyboard Channel

This parameter specifies the channel to be used when keyboard performance information is sent from this Digital Keyboard to a computer.
Perform the procedure under “To configure function settings with the button and configure the following setting: Keyboard Channel (Keybd Ch).

Local Control

This parameter can be used when using an external sound source to play Digital Keyboard notes to specify that the notes should not be sounded by the Digital Keyboard.
Perform the procedure under “To configure function settings with the action button and configure the following setting: Local Control (Local).

Accomp Out

This parameter specifies whether or not Auto Accompaniment data should be sent.
Perform the procedure under “To configure function settings with the button and configure the following setting: Accomp Out (AcompOut).

Transferring Data Between the Digital Keyboard and a Computer

You can transfer recorded songs, and other data in Digital Keyboard memory to a computer for storage. You also can load the Auto Accompaniment data you download from the CASIO website to the Digital Keyboard, which greatly expands Auto Accompaniment patterns available to you. A special Data Manager application is required in order to transfer data to and from the Digital Keyboard.

Data Types Supported for Data Transfer

You can transfer the types of data listed below between the Digital Keyboard and a computer.

Downloading Data Manager

1. Go to the CASIO WORLDWIDE site at the following URL. http://world.casio.com/ 
2. At the site, select a geographic area or country.
3. After accessing the area site, navigate to the minimum computer system requirements for the Data Manager for this product.
   You should be able to find a link to Data Manager information on the product introduction page of this product. If you cannot find such a link, use the search form of the area site where you are located to enter the model name of this product and search for it.
   Note that site contents are subject to change without notice.
4. Check if your computer system complies with the minimum requirements for Data Manager.
5. Download Data Manager and its user’s guide to your computer.
6. Follow the procedure in the user’s guide that you downloaded in step 5 to install and use Data Manager.
   You can download accompaniment data from the Internet Data Expansion system of the CASIO MUSIC SITE http://music.casio.com/  and load it into the memory of this Digital Keyboard. Note that there is no accompaniment data intended specifically for this model, so you should use data for other models.

NOTE

• Since the accompaniment data is for other models, you may experience some abnormalities when playing it on this model.
• For information about accompaniment data compatibility between models, see the Data Manager user’s guide you download in step 5 of the above procedure.

Troubleshooting

Error Messages

Casio CT-X8000IN Pros & Cons

Pros

• Extensive sound library and rhythms
• Portable and lightweight design
• User-friendly interface and navigation
• Built-in lesson system for beginners
• Robust speaker system and external connectivity options

Cons

• No touch sensitivity on lower-end models
• Limited polyphony for complex compositions
• No built-in Wi-Fi or Bluetooth connectivity
• Batteries may drain quickly with heavy use

Customer Reviews

Customers have praised the Casio CT-X8000IN for its versatility and value for money. Many have appreciated the wide range of sounds and rhythms, which cater to various musical genres. However, some users have noted that the battery life could be improved and that the lack of touch sensitivity on some models can be a drawback.

Common Complaint 

Is the complexity of the menu system, which can take time to get accustomed to. Despite this, the overall feedback has been positive, with many recommending it for both practice and performance use.