External Device Controls
Overview: The Kenwood KDC-X491
AM/FM CD receiver features a detachable face, rear auxiliary input, 3
sets of 4-volt preamp outputs, CD changer and Satellite radio controls, HD
radio, Bluetooth and iPod ready functions, as well as a front panel USB connector, plus AAC/MP3/WMA/WAV playback.
The CD player comes with a soft face case and an IR wireless remote control. The unit's
is rated at 22 watts x 4 channel RMS and 50 watts x 4 channel peak.
The unit features a single front loading CD face that detaches from the chassis
to deter theft. There is a red indicator light that will flash on the unit after
the face has been removed to warn potential thieves. You can turn this flashing
LED on or off. The CD player comes supplied with a soft black fabric, draw
string face case to protect the detachable face when you have it off the
AAC/MP3/WMA/WAV Playback: The
can play MP3, WMA, WAV and AAC files with ID3 tag information recorded on CD-ROM, CD-R, and CD-RW discs in ISO9660
Level 1/Level 2, Joliet, Romeo and Long file name formats.
24 Bit D/A Converter: The
Kenwood KDC-X491 utilizes a 24-bit digital to analog converter for superior CD
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.
AUX Input: The KDC-X491 is
equipped with a rear panel 3.5mm minijack auxiliary input for connecting
external portable audio devices such as an MP3 player or Tape walkman. The
receiver allows you to turn the Auxiliary input On our Off so you don't have to
scroll through that source if you are not using it. The 3.5mm female minijack
connector is attached to a 7.5" pigtail.
Auxiliary Display: The
KDC-X491 allows you to select the source type displayed when using the
auxiliary input. You can choose from AUX, DVD, Portable, Game, Video or TV.
Dual Zone: The Dual Zone mode
allows you to output the Main source and the Auxiliary input separately for the
front and rear channels. You can select whether the auxiliary input will play in
the front or the rear.
3-Sets of 4V Preamp Outputs: The KDC-X491 features front, rear and subwoofer 4V preamp outputs. The Subwoofer
preamp output can be turned On or Off and adjusted independently. The front and
rear speaker preamp outputs are balance and fade adjustable. The subwoofer
preamp output is non-fading. The front and rear preamp outputs are fixed to the
chassis, while the subwoofer output is on 7.5" pigtail lead.
Front and Rear High-Pass Filter:
The KDC-X491 features an independent High-Pass Crossover for the front and rear
channels. You can adjust the high-pass crossover from through, 40, 60, 80, 100, 120,
150, or 180, 220Hz. The "Through" selection is a full-range setting. This feature is
very helpful when you have smaller-type speakers in the front and larger-type
speakers installed in the rear of the vehicle.
Low-Pass Filter: The receiver
features a built-in Low Pass Filter control for the preamp-output when the
Subwoofer Output is "on". You can select from 50, 60, 80, 100,120Hz or Through.
The "Through" setting allows your external amplifier's crossover network to do
all the filtering for your subwoofer.
Subwoofer Level: Once you have
switched the Subwoofer Output to "on" you can independently control the
subwoofer preamp output level from the CD receiver. You select levels between
-15 to +15.
Subwoofer Phase: You can adjust
the phase of the subwoofer output between 180-degrees (Reverse) or 0-degrees
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 Bass, Treble and preset EQ settings.
Attenuator: The CD receiver
features an Attenuator button that turns the volume down very quickly with one
touch of one button.
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), "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).
Note: The Speaker
Setting affects the bass, midrange, and treble values of the System Q
presets. The speaker setting should be selected first.
System Q Sound Control: Six
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). The 6 preset curves with their respective bass, mid, and treble levels
are as follows:
- Rock: Bass +6, Mid +1,
- Pops: Bass +3, Mid +2, Treble +6
Bass +6, Mid 0, Treble -2
- Top 40:
Bass +3, Mid +1, Treble +8
- Jazz: Bass +5, Mid +2, Treble +2
- Natural (Flat): Bass 0, Mid 0, Treble 0
Note: The above values
reflect the System Q settings when the Speaker Setting function is
turned off. When the Speaker Settings are selected, the System Q level
settings are different.
Bass/Treble/Mid Control: The
KDC-X491 features independent Bass, Treble and Midrange control. You can adjust
each one from -8 to +8db.
Detail Audio Control: The
Detail Audio Control allows you to adjust the following settings for the Bass,
Treble and Mid levels.
- Bass Level:
- Bass Extend: On/Off
(when this feature is set to "On", the low frequency response is
extended by 20%)
- Mid Level:
- Q-Factor: 1.0/2.0
- Treble Level:
Loudness: The Loudness feature
compensates for low and high tones during low volume. You can turn this feature
either on or off. Only the low tone is compensated for when the tuner is
selected as a source.
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.
Source Tone Memory: This feature allows you to store System Q bass, middle and treble tone settings
for each source (CD, FM, AM and Aux).
Text/Title Scroll: The KDC-X491 will display CD text, Audio file text and Satellite and HD radio
text. You can turn the
scrolling feature "on" to scroll longer titles across the screen.
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 Force: When there is a
problem with playing a CD with a special format, this setting plays the CD by
force. Some CDs still may not play in the CD Force mode.
CR-2 Advanced Tuner: This unit
uses Kenwood's CR-2 Advanced tuner for clear radio reception. 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.
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
tuner features 3 FM banks (1, 2, 3) and 1 AM bank. You can store 6 presets for
each AM/FM bank giving you a total of 18 FM presets and 6 AM presets.
Clean Reception System Circuit
(CRSC): This circuit controls multi-path distortion by reducing stereo
separation. As stereo separation is reduced, multi-path has less effect on the
radio signal, improving reception in areas with tall buildings and mountains.
The CRSC circuit can be turned on or off.
Receive Mode: If you choose to
connect the optional HD tuner, the Receive Mode
allows you to choose to receive analog or digital AM/FM broadcasts. You can
choose from the following.
- Auto: analog and digital
broadcast will be received with the digital broadcast having priority
- Digital: receives digital
- Analog: receives analog
Tel Mute: The KDC-X491
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.
Beep Tone: The CD player
features a touch sensor tone that beeps when you have selected a function of the
unit. You can turn the beep tone ON or Off.
Security Code: You can enter a
4-digit security code which must be used when the unit is removed from the
vehicle, or the constant power source is disconnected from the unit. When
constant power is restored to the unit, the security code must be entered before
the unit becomes operational.
FL Display: The unit features a
large 14-segment Fluorescent display that uses a black background and blue
characters that are easy to read.
Display: When the unit is in Standby mode, the face/button illumination
is "keyed." In addition, while the unit is in Standby mode, you can turn the
clock display on or off. 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 Illumination Control:
This function turns off the display when have not performed an operation for 5
seconds. This is effective for when you are driving at night.
Dimmer: The dimmer function
will dim this unit's display automatically when the vehicle light switch is
turned On when you connect orange/white Illumination wire of this player.
Remote Control: The KDC-X491
comes with the RC-547 IR wireless remote control with a full numeric keypad. The
remote will control Audio, CD, Tuner, Satellite, HD radio and Dual Zone functions. It is
powered by 2 "AA" batteries (supplied). The dimensions of the remote are: L =
5.362", W = 1.962", D = 1.115".
External Device Controls
iPod High-Speed Connection: The
USB port and AUX input are also compatible with iPod devices when used with the optional
KCA-iP200 adapter (part # 113IP200, sold separately). The USB Direct Connection
enables high-speed iPod data communications of 12MB/bps via the optional
KCA-iP200 (2-Wire) interface. One end of the cable plugs directly into your
iPod's dock connector while the other end of the cable uses two connectors that
plug into the headunit. The USB type-A connector portion of the
cable plugs into the receiver's front-panel USB port and handles the control and charging of
your iPod, so you can navigate through your music files using the headunit's
controls and view song info on it display. The 3.5mm miniplug connector portion
of the cable plugs into the Auxiliary 3.5mm input on the receiver and transfers
the music from your iPod to your Kenwood CD player. By using the Auxiliary input
the music travels to the receiver as an analog signal, so you can even play the
Digital-Rights-Protected files you've stored on your iPod. The controls of the KDC-X491 are seamless
when used with the optional KCA-iP200 and
include metadata browsing and playback of DRM contents, as well as the ability
to choose any iPod playback mode to suit your listening application. Satellite
There are several
options for connecting an optional XM or SIRIUS Satellite Radio receiver to
- XM Satellite Radio: To receive XM
Satellite Radio, you can connect the optional CNP2000UC XM Mini Tuner
and the CNP-KEN1 Kenwood adapter cable (package item number 700XMKEN1).
To receive SIRIUS Satellite Radio, you can
connect the optional
SC-C1 SIRIUS Connect vehicle tuner (item number 607SCC1) and the
Kenwood/SIRIUS adapter (item number 113KCASR50).
Select dock-and-play and portable SIRIUS radios can be controlled using
the Kenwood/SIRIUS adapter
(item number 113KCASR50)
SC-VDOC1 dock (item number 607SVCDOC1).
- Auxiliary Input:
A portable satellite radio receiver, such as the Delphi SkyFi3 or SIRIUS
Sportster, can be connected to the head unit via the auxiliary input
(adapter may be required).
A subscription is also required to receive
satellite radio programming from SIRIUS or XM.
HD Radio Ready: With an
optional Kenwood HD Radio tuner (item # 113HR100TR), you will be able to receive
digital AM/FM broadcasts from local stations where available. This new
technology will significantly improve audio quality and reception, as well as
include information such as artist name and song titles or traffic news,
viewable on the receiver's display.
Bluetooth Ready: The unit is
also Bluetooth compatible using the optional Kenwood KCA-BT100 Bluetooth
adapter. Using this adapter you can make and answer phone calls from the Kenwood
headunit. You can even download your Phonebook information from your compatible
mobile phone into the headunit. You are able to register up to five compatible
Bluetooth cell phones when using the KCA-BT100 adapter.
USB Port: The Kenwood KDC-X491
features a front-panel 2.0 USB type-A port that is protected by a clear plastic,
sliding window when not in use. The USB port
enables connection to portable USB mass-storage players, USB thumb drives and
audio control of MP3 player. The USB port is compatible with all USB mass
storage class devices that support the FAT16 or FAT32 file system. A
single or multi-slot card reader can also be connected the USB port, allowing
your music to be put neatly into different types of memory cards.
Changer Controls: This unit is directly compatible with Kenwood changers
manufactured in 1998 or later. If the changer has an O-N switch, the switch will
need to be set to the "N" position. In addition to basic disc navigation features, this
unit has the following changer controls: direct disc access (using the remote),
direct track access (using the remote), track intro scan, track repeat, disc
repeat, disc random, and magazine disc random. When connected to a CD Text capable CD changer or
an MD changer, this unit can display disc and track titles for discs encoded
with disc and track title information. The text information can be scrolled
manually or automatically.
Additional/Optional Rear Auxiliary Input: The unit already features a rear panel auxiliary
input, but if you need a second auxiliary input, another one can be added to the rear of
the unit. When used with an optional adapter, this unit can accept a rear input
from an auxiliary source. When the CA-C1AUX adapter (item 113CAC1AX) is used,
you cannot connect a CD changer to the head unit because the adapter plugs into
the DIN changer control connection on the head unit. When the KCA-S220A
2-changer switch (item
113KCAS220) is used, you can connect a CD changer and an auxiliary audio source
at the same time. When an auxiliary audio source is connected, you can choose
from one of six names for the source: Aux Ext, TV, DVD, Video, Game, or