ONKYO CR-525UKD ユーザーズマニュアル

15

The CD receiver supports the following discs.

• Some audio CDs use copy protection that doesn’t con-

form to the official CD standard. Since these are non-
standard discs, they may not play properly in the CD 
receiver.

• The CD receiver supports 8 cm and 12 cm discs.
• The CD receiver does not support disc types not listed.
• Don’t use discs with an unusual shape, such as those 

shown below, as you may damage the CD receiver.

• Don’t use discs that have residue from adhesive tape, 

rental discs with peeling labels, or discs with custom-
made labels or stickers. Doing so may damage the CD 
receiver and you may not be able to remove the disc 
properly.

• The CD receiver supports CD-R and CD-RW discs. 

However, some CD-R and CD-RW discs may not 
work properly for any of the following reasons: disc 
burner characteristics, disc characteristics, the disc is 
damaged or dirty. See the manual supplied with your 
disc burner for more information. Condensation or dirt 
on the optical pickup lens can also affect playback.

• Make sure to use discs that have been finalized.

Discs made on personal computers, including those of a 
compatible format, may not work properly in the CD 
receiver because of incorrect settings in the disc burning 
software. Check the manuals supplied with your disc 
burning software for additional compatibility informa-
tion.

• MP3 discs must be ISO 9660 Level 1 or Level 2, 

Romeo or Joliet compliant. Supported formats: 
Mode 1, Mode 2 XA Form 1.

• Folders can be up to eight levels deep.
• MP3 files must be MPEG-1/MPEG-2 Audio Layer 3 

format with a sampling rate of between 8 kHz and 
48 kHz and a bit-rate of between 8 kbps and 320 kbps 
(128 kbps recommended). Incompatible files cannot 
be played.

• Constant bit rate MP3 files are recommended, how-

ever, variable bit-rate (VBR) MP3 files between 
8 kbps and 320 kbps are supported. (Playing times 
may not display correctly.)

• MP3 files must have a “.mp3” or “.MP3” file name 

extension. MP3 files without the proper extension will 
not be recognized. To prevent noise and malfunction, 
do not use these extensions for other types of files.

• The CD receiver supports up to 499 MP3 files and 

folders. Files and folders in excess of this cannot be 
played. Note that if the file and folder structure is very 
complicated, the CD receiver may not be able to read 
or play all of the MP3 files on the disc.

• Disc, file, and folder names may contain up to 32 char-

acters.

• The maximum time that can be displayed for a single 

file is 99 minutes and 59 seconds.

• The remaining time cannot be displayed when playing 

MP3 files.

• MP3 file and folder names (excluding the extension) 

are shown on the display.

• Multisession discs are supported, however, some mul-

tisession discs may take a long time to load and some 
may not load at all. When burning CDs, we recom-
mend that you use a single-session (disc-at-once), and 
select “Disc Close”.

• Normally, the music in the audio session of a CD Extra 

disc is played. However, you can set the CD receiver 
so that it plays any MP3 files in the data session of a 
CD-R/RW disc instead. If the data session contains no 
MP3 files, the audio session will be played regardless. 
See “Setting MP3 Preferences” on page 35 for more 
information.

• The Emphasis is not supported.

PCM

Audio CD, MP3

MP3

Audio CD, MP3

MP3

Audio CD (Session 1), 
MP3 (Session 2)