Terminology, 12-EN | Alpine CDA-9847 specs

Producing MP3/WMA discs

MP3/WMA files are prepared, then written to a CD-R or CD-RW using CD-R writing software. A disc can hold up to 510 files/folders (including Root Folders). However, the maximum number of folders is 255.

Media supported

The media that this device can play back are CD-ROMs, CD-Rs, and CD-RWs.

Corresponding File Systems

This device supports discs formatted with ISO9660 Level 1 or Level 2.

Under the ISO9660 standard, there are some restrictions to remember.

The maximum nested folder depth is 8 (including the root directory). The number of characters for a folder/file name is limited.

Valid characters for folder/file names are letters A-Z (all caps), numbers 0-9, and ‘_’ (underscore).

This device also can play back discs in Joliet, Romeo, etc., and other standards that conform to ISO9660. However, sometimes the file names, folder names, etc., are not displayed correctly.

Formats supported

This device supports CD-ROM XA, Mixed Mode CD, Enhanced CD (CD-Extra) and Multi-Session.

This device cannot correctly play back discs recorded with Track At Once or packet writing.

Order of tracks

The unit plays the files in the order that the writing software writes them. Therefore, the playing order may not be the same as the order you input. The playback order of the folders and files is as follows. However, the folder and file playback order differs from the folder no. and file no. indicated on the display.

Terminology

Bit rate

This is the “sound” compression rate specified for encoding. The higher the bit rate, the higher the sound quality, but also the larger the files.

Sampling rate

This value shows how many times per second the data is sampled (recorded). For example, music CDs use a sampling rate of 44.1 kHz, so the sound is sampled (recorded) 44,100 times per second.

The higher the sampling rate, the higher the sound quality, but also the larger the volume of data.

Encoding

Converting music CDs, WAVE (AIFF) files, and other sound files into the specified audio compression format.

Tag

Song information such as track titles, artist names, album names, etc., written into MP3/WMA files.

MP3: ID3 tag

WMA: WMA tag

Root folder

The root folder is found at the top of the file system. The root folder contains all folders and files.

Root

Folder

	2
	3
4	3
	4
	5
	5
6	6
	7

Folder

MP3/WMA File

12-EN

CDA-9847 specifications

The Alpine CDA-9847 is a high-performance car audio receiver that combines advanced technology with user-friendly features, making it an ideal choice for music enthusiasts and casual listeners alike. This model stands out due to its sleek design and robust capabilities, which enhance the overall listening experience.

One of the main features of the CDA-9847 is its CD playback capability, allowing you to enjoy your favorite albums with exceptional sound quality. In addition to CDs, this receiver supports various audio formats, including MP3 and WMA files, enabling users to play music from different sources. The built-in USB port allows for direct connection of USB flash drives, bringing a vast library of music within reach.

The CDA-9847 also supports iPod connectivity, which is a significant advantage for Apple users. With the optional KCE-422i interface, you can control your iPod directly from the receiver's interface, providing seamless access to your music collection while simultaneously charging your device. This integration enhances convenience and promotes safe driving, as users can navigate through their playlists without taking their eyes off the road.

Another notable characteristic of the CDA-9847 is its customizable audio settings. The receiver features a 3-band parametric equalizer, allowing users to fine-tune their sound to their preference. Additionally, it includes high-pass and low-pass filters to help tailor the audio output to specific speakers, ensuring that all frequencies are optimized for the best possible sound experience.

In terms of connectivity, the CDA-9847 offers multiple pre-out options, which enable users to expand their audio system with amplifiers or a subwoofer. This makes it an excellent choice for those looking to upgrade their car audio system over time.

Furthermore, the receiver is equipped with a detachable faceplate for added security, protecting your investment against theft. The bright LCD display is easy to read, even in direct sunlight, providing essential information at a glance.

Overall, the Alpine CDA-9847 embodies a blend of quality sound performance, versatile connectivity options, and user-friendly features, making it a valuable addition to any car audio system. Whether you are an audiophile or a casual user, this receiver promises to enhance your driving soundtrack and provide a rewarding listening experience.

Alpine CDA-9847 owner manual Terminology, 12-EN

Models: CDA-9847