The Kenwood KDC-248U features a single front loading CD face that detaches from the chassis
to deter theft. The head unit includes a cloth pouch for storing the face-plate when
Note: An optional soft face case (142DFC1X,
sold separately) can also be purchased for this unit.
Fluorescent Display: The Kenwood head unit features an
11-character blue backlit fluorescent display with red button illumination.
Display: When the unit is in Standby mode, the face and button illumination
is "keyed." When the Clock Display is turned on and
the unit is in Standby mode, the Clock Display is also "keyed." Pressing and
holding the source button turns the unit off completely.
Display Dimmer: The display has two brightness settings to
adjust the brightness of the display according to the surrounding illumination.
You can change this setting within the menu from On or Off.
Demo Mode: This unit features a Demo mode which can be
turned On or Off within the menu.
24 Bit D/A Converter: The Kenwood KDC-248U utilizes a
24-bit digital to analog converter for superior CD sound quality.
MOSFET Amplifier: The Kenwood KDC-248U is equipped with a
MOSFET amplifier. Compared to conventional power supplies, the MOSFET
amplification circuit is smaller and more efficient, and it delivers increased
power with less distortion and absolutely zero on/off switching noise. More
power means louder and cleaner music at higher volumes because you're not
pushing the limits of the amplification circuit. The power output specs for the
KDC-248U are as follows:
- Full Bandwidth Power: 22 watts RMS x 4 channels (at 4
ohms, 20-20kHz, 1% THD)
- Maximum Output Power: 50 watts x 4 channels
Rotary Volume Control: The CD receiver uses a rotary volume
control that increases and decreases the volume of the stereo from 0 to 35. The
rotary knob also controls other audio settings such as Balance, Fader, Bass,
Mid, Treble and preset EQ settings. In addition, the rotary knob allows you to
scroll through and select your music tracks when the Music Search function is
Volume Offset: The level of each source may be independently
adjusted to prevent radical leaps in output volume when switching from one
source to another. The available settings range from -8 to 0 (-8 to +8 for Aux
Speaker Settings: The Speaker
Setting function tailors the System Q Sound Control settings according to the
type of speakers in your vehicle. You may select a Speaker Setting of 'SP-Off'
(flat/off), 'SP-OEM' (for OEM factory speaker systems), 'SP-6x9/6' (for systems with 6"
and 6"x9" speakers), or 'SP-5/4' (for systems with 4" and 5" speakers).
System Q Sound Control: Eight EQ curves are preset into
memory, allowing you to recall the best preset EQ curve for different types of
music. Each preset has its own level settings for bass (100Hz), midrange (1kHz),
and treble (10kHz). You can choose from the following preset EQ curves - Rock,
Pops, Easy, Top 40, Jazz, Natural, Game, and User.
The System Q's User Mode features independent Bass (100 Hz), Treble (10 kHz), and Midrange (1 kHz) control from - 8
to +8 dB.
Bass Boost: In addition, The Kenwood CD receiver features a Bass Boost control that can be set
to the following levels - LV1, LV2 or Off.
Source Tone Memory: This feature allows you to store System
Q bass, middle and treble tone settings for each source (CD, Tuner, USB/iPod, and Aux).
Supreme Setting: When MP3 or WMA files encoded at a low bit
rate (less than 96 kbps, 44.1k, 48kHz) are played, the Supreme Setting function
restores their high frequencies so the sound quality is closer to files encoded
at a high bit rate. The processing is optimized for the compression format and
the bit rate used. When the Supreme Setting is Off, the unit plays the original
sound stored in the audio file.
Selectable 2.0V Preamp Output: The KDC-248U
features a 2.0-volt stereo preamp output that you can be adjusted from a full-range rear speaker
output to a low-pass subwoofer preamp output.
Subwoofer Controls: The Kenwood KDC-248U offers the following subwoofer controls, when you have the
unit's subwoofer preamp output activated.
- Low Pass Filter: The receiver
features a built-in Low Pass Filter control for the preamp-output, when the
output is set to Subwoofer. You can select from 80 Hz, 120 Hz, 160 Hz, or off.
- Subwoofer Phase: You can adjust the phase of the
subwoofer output between 180-degrees (Reverse) or 0-degrees (Normal).
- Subwoofer Level: Once the Subwoofer preamp output is
activated, you can independently control the
subwoofer preamp output level (-15 to +15) from the CD receiver.
Tel Mute: The KDC-248U features
a cell-phone mute wire (brown) in its harness that when hooked up to your car's
phone system mute wire will automatically mute the receiver's audio signal when
a call comes in.
Key Beep: The in-dash head unit provides an audible beep to
confirm button operation. This function can be turned On or Off.
AM/FM Tuner: The Kenwood KDC-248U features a built-in AM/FM
tuner. You can choose one of three tuning modes: Auto 1 (seek tuning), Auto 2
(cycles through and tunes the selected band's preset stations only with each
button press), or Manual.
Tuner Presets: The KDC-248U's tuner features 3 FM banks (1,
2, 3) and 1 AM bank for storing presets. The Kenwood KDC-248U offers two preset
- Normal: You can store 6 presets for each AM/FM bank
giving you a total of 18 FM presets and 6 AM presets (total of 24).
- Mix: A total of of 6 stations can be assigned to
a total of 6 preset buttons, regardless of AM/FM band and connected Satellite
Radio tuner. You can recall a preset station without switching between
Auto Memory Tuning: Not only does the CD receiver's tuner
allow you manually enter your desired presets you can choose to have the unit
automatically put stations with good reception in the memory banks
automatically; this is a handy feature when traveling.
The unit features a single disc player that will playback CD-Audio, CD-Text, and finalized
CD-R/CD-RW audio discs.
MP3/WMA Playback: The KDC-248U can play MP3 (8-320 kbps) and
WMA (32-192 kbps) files recorded on CD-R and CD-RW discs in ISO9660 Level
1/Level 2, Joliet, Romeo, and Long file name formats. Each disc can have a
maximum of 8 directory levels, 50 folders, and 255 files per folder (512 maximum
number of files and folders). During MP3/WMA playback, the unit displays any
recorded ID3 Tag (ver. 1.x/2.x) and WMA Tag information - up to 60 characters.
Text Scroll: The KDC-248U will display CD text or Audio file
text. You can set the text scrolling feature to two different modes (Auto or
Manual) to scroll longer titles across the screen.
Music Search: The Kenwood AM/FM CD receiver features a Music
Search feature which allows you to scroll through and select your MP3/WMA music
folders and files, as well as scroll through your audio CD's music tracks using
the head unit's rotary knob.
Direct Music Search: The supplied IR wireless remote control
(RC-405) allows you to search for music directly by entering the track number.
Playback Modes: The Kenwood KDC-248U features the following Repeat,
Random, and Scan playback modes.
- Repeat Play: Track, File, or Folder
- Random Play: Disc or Folder
- Scan Play: Track or File (plays the first 10-seconds of each
music track on a disc or music file in a folder)
Last Position Memory: If the unit is shut off or switched to
the tuner mode while a CD is playing, the next time CD is selected as the
source, playback will resume from the point where it left off.
CD Read: This function sets the method for reading a CD
disc. You can choose between two modes.
- CD1: Automatically distinguishes between audio file
disc and music CD when playing a CD or CD-R/RW disc.
- CD2: When unable to play a special formatted CD, set
this function to CD2 to force playing. Some music CD discs may be
unplayable even when set to this mode.
Off Insert/Eject: A CD disc can be inserted or ejected with
the power off. When a disc is inserted with the power off, the unit will
automatically power up and begin playback.
USB Port: The Kenwood KDC-248U features a front panel
USB (1.1/2.0) type-A port that is hidden behind a flip-up cover. The USB port
enables connection and control of a portable USB mass-storage class (MSC) device
with MP3 (8-320 kbps) and WMA (32-192 kbps) music files. The USB port is
compatible with all USB mass storage class devices that support the FAT16 or
FAT32 file system. Your USB device should only have a maximum of 8 folder
layers, 255 folders, and 255 files per folder - with a maximum of 65,025 files
and folders. USB portable audio players that can be charged via USB will be
charged when plugged into the CD receiver's USB port, and the vehicle's ignition
switch is set to ACC or On.
Note: You cannot connect a USB device via a USB hub or
Multi-Card Reader to this unit.
iPod/iPhone Direct Connection: The KDC-248U's front-panel USB port also acts as an iPod/iPhone high-speed direct
connection when used with the optional Kenwood USB Direct Connection Cable (113KCIP102,
sold separately) or the USB/iPod cable that comes with your iPod/iPhone. Using
either cable allows audio playback, music navigation, information display, and
charging of select iPod/iPhone models from the KDC-248U.
iPod/iPhone Audio Playback: The USB
connection allows your iPod/iPhone's large music libraries to be loaded
instantly to the head unit and sound quality to be maximized through the
head unit's 24-bit D/A converter, allowing for a Signal to Noise ratio up to
105dB. The Kenwood head unit supports audio playback of music files and podcasts
stored on your iPod or iPhone.
iPod/iPhone Control: You can choose
to control the iPod/iPhone from the head unit or from your iPod/iPhone's
clickwheel or touchscreen.
- Music Browsing: The Kenwood
head unit allows you to navigate your iPod's music by Playlist, Artists,
Album, Genre, Composer, Song, or Podcast. You can search these categories
alphabetically or using a percentage search (0.5%, 1%, 5%, 10%).
- Playlists: You
can create your own custom iPod/iPhone playlist (up to 10 songs) from the head unit.
- Repeat & Random: The head unit supports Repeat (file) &
Random (folder) playback functions of your connected iPod/iPhone.
iPod/iPhone Display: The KDC-248U
will display your iPod/iPhone's music file information when you are
controlling your iPod or iPhone from the Kenwood head unit. The head unit will
display Track number, Elapsed playing time, Artist name, Song title, and Album
label. If you choose to
operate your connected iPod/iPhone via its clickwheel or touchscreen controls,
the KDC-248U will not display your iPod/iPhone's music information (the head unit will
instead display iPod MODE).
iPod/iPhone Charging: While
connected and the ignition switch is set to ACC or ON, the head unit's USB
connection will power and charge your iPod/iPhone.
Note: If your iPod/iPhone has
no initial battery charge, then the unit will not recognize it.
iPod/iPhone Compatibility Chart:
The Kenwood KDC-248U is "Made for iPod/iPhone" compatible and supports the
following iPod/iPhone model features (as of November 2011):
| iPod/iPhone Model || Generation || Tested Version || Media Type || Control Type || Display Type || Charge |
| Audio || Video || Head Unit || iPod/iPhone || Song/Artist Text || Track Info |
| dock connector || 3rd || N/A || N || N || N || N || N || N || N |
| clickwheel |
| 4th || N/A || N || N || N || N || N || N || N |
mini ||1st ||N/A || N || N || N || N || N || N || N |
|2nd ||N/A ||N ||N ||N ||N ||N ||N ||N |
| video || 5th || 1.3 || Y || N || Y || N || Y || Y || Y |
| classic || 80GB || 1.1.2 || Y || N || Y || Y || Y || Y || Y |
| 120GB || 2.0.1 || Y || N || Y || Y || Y || Y || Y |
| 160GB || 2.0.4 || Y || N || Y || Y || Y || Y || Y |
| nano || 1st || 1.3.1 || Y || N || Y || N || Y || Y || Y |
| 2nd || 1.1.3 || Y || N || Y || Y || Y || Y || Y |
| 3rd || 1.1.3 || Y || N || Y || Y || Y || Y || Y |
| 4th || 1.0.4 || Y || N || Y || Y || Y || Y || Y |
| 5th || 1.0.2 || Y || N || Y || Y || Y || Y || Y |
| 6th || 1.1 PC || Y || N || Y || Y || Y || Y || Y |
| touch || 1st || 2.2.1 || Y || N || Y || Y || Y || Y || Y |
| 2nd || 4.2.1 || Y || N || Y || Y || Y || Y || Y |
| 3rd || 5.0.1 || Y || N || Y || Y || Y || Y || Y |
| 4th || 5.0.1 || Y || N || Y || Y || Y || Y || Y |
| iPhone || 2G || 3.1.3 || Y || N || Y || Y || Y || Y || Y |
| 3G || 4.2.1 || Y || N || Y || Y || Y || Y || Y |
| 3GS || 4.3.5 || Y || N || Y || Y || Y || Y || Y |
| 4 || 5.0.1 || Y || N || Y || Y || Y || Y || Y |
| 4S || 5.0.1 || Y || N || Y || Y || Y || Y || Y |
Note: Apple iPod/iPhone software updates may change
functionality results. If you download a newer software version, you may
need to reset the head unit and your iPod/iPhone to regain functionality. If
this doesn't work, you may need to revert to the older software version or
wait until a newer software update is available.
Aux In: The unit is equipped with a front panel 3.5mm
minijack auxiliary input that can be used to input audio from a portable audio
source, such as a portable MP3 player. The Aux input must be turned on to function. The
unit has 3 auxiliary input modes.
- On1: Outputs the sound of the external unit connected
to the Aux terminal when switched to the Aux source.
- On2: Activates the attenuator function when turning on
the power with the auxiliary source selected. This prevents the noise when
no external unit is connected to the Aux terminal. Turn off the attenuator
function when listening to output from an external unit.
- Off: Disables the selection of the Aux source.
Auxiliary Display: The KDC-248U allows you to select the
source type displayed when using the auxiliary input. You can choose from AUX,
DVD, Portable, Game, Video, or TV.
Wireless Remote Control: The KDC-248U comes with an IR
remote control (RC-405) for wireless operation of the head unit. The remote will
control Audio, CD, USB, and Tuner functions. It is powered by a single CR2025 3V
lithium-cell battery (supplied).
Numeric Keypad: The wireless remote control features a
numeric keypad (0-9) which allows direct track access of your music tracks &
files (from CD or USB), as well as AM/FM presets.
Attenuator: The CD receiver features an Attenuator button on
the supplied remote control that turns the volume down very quickly with one
touch of the button.
Music Editor Compatible: The Kenwood KDC-248U supports the
PC application, Kenwood Music Editor Lite (ver.1.1.0). Kenwood Music Editor Lite
is a Windows-based desktop software that helps organize, manage and transfer
MP3 and WMA music files to your USB devices from your PC. When you playback audio
files that have been stored on your USB device using Kenwood Music Editor Lite
through this unit, you can search a file by title, album, or artist name using
the head unit's Music Search function.
System Requirements: The Kenwood Music Editor Light
(ver.1.1.0) Windows-based software can be downloaded for free from Kenwood.com
to your PC. The Kenwood Music Editor Light is compatible with the following
Windows Microsoft Operating Systems.
- Windows XP Professional, Home Edition SP2 or later (32-bit)
- Windows Vista (32/64-bit)
- Windows 7 (32/64-bit)