Kenwood KDC X399 Manual

The Kenwood KDC X399 is a high-performance car stereo receiver featuring CD/MP3/WMA playback, built-in MOSFET 50Wx4 amplifier, detachable faceplate security, 18 FM/6 AM presets, optional Bluetooth connectivity, USB input, auxiliary input, customizable illumination, and advanced audio controls. Below are key sections for features, installation, operation, settings, and troubleshooting.

1. Features at a Glance 2. Installation 3. Basic Operation 4. Specifications 5. Controls and Settings 6. Audio Settings 7. Bluetooth Connectivity 8. USB and Auxiliary Input 9. Security Features 10. Troubleshooting

Features at a Glance

Key components: Main unit with detachable faceplate, remote control, wiring harness, installation hardware, user manual.

Feature	Description
CD/MP3/WMA Playback	Plays CDs, MP3, and WMA formats
MOSFET Amplifier	50W x 4 channel high-power output
Detachable Faceplate	Security feature to prevent theft
Bluetooth Ready	Optional Bluetooth adapter for hands-free
USB Input	Connect USB devices for audio playback
Auxiliary Input	3.5mm jack for external audio sources
18 FM/6 AM Presets	Station memory for quick access
Customizable Illumination	Adjustable display colors
Remote Control	Full-function wireless remote included
Audio Controls	Bass, treble, balance, fader adjustments

Installation

Proper installation ensures optimal performance and safety.

Disconnect vehicle battery negative terminal before installation.
Connect wiring harness following color-coded wiring diagram.
Mount unit securely in dashboard using supplied mounting sleeve.
Connect antenna cable and all input/output cables.
Reconnect battery and test all functions.

WARNING! Always disconnect battery before installation to prevent electrical shorts. Ensure proper grounding.

Basic Operation

Power on unit and familiarize yourself with basic controls.

Power: Press SRC/OFF button to turn on/off.
Source Selection: Press SRC to cycle through CD, Tuner, USB, Aux.
Volume Control: Turn VOL knob or use remote volume buttons.
Mode Selection: Use MODE button for different audio modes.
Preset Stations: Store stations by holding preset button.

CAUTION! Do not operate while driving if it distracts from safe vehicle operation.

Specifications

Power Output: 50W x 4 channels (MOSFET)
CD Formats: CD, CD-R, CD-RW, MP3, WMA
Tuner Sensitivity: 10 dB FM, 30 dB AM
Preset Memory: 18 FM, 6 AM stations
Inputs: USB, 3.5mm Aux, Optional Bluetooth
Security: Detachable faceplate with carrying case
Display: Customizable multi-color illumination
Dimensions: Standard DIN size (7" x 2")
Operating Voltage: 12V DC negative ground

Controls and Settings

Front Panel Controls: SRC/OFF, VOL knob, MODE, BAND, Preset buttons, EJECT.

Remote Control: Power, Volume, Source selection, Track skip, Preset selection, Mute.

Menu Settings: Access by holding FUNCTION button. Includes clock setting, display settings, audio adjustments, tuner settings, and system configurations. Use rotary encoder to navigate menus.

Audio Settings

Comprehensive audio customization for optimal sound quality.

Bass/Treble: Adjust frequency response (-6 to +6 dB)
Balance/Fader: Control speaker output distribution
Loudness: Enhance low and high frequencies at low volumes
Subwoofer Control: Adjust subwoofer output level
EQ Presets: Rock, Pop, Jazz, Classic, User customizable

Tip: Adjust audio settings while parked for safety.

Bluetooth Connectivity

Optional KCA-BT200 Bluetooth adapter required for wireless features.

Pairing: Enable Bluetooth on phone, select "KDC-X399" from available devices.
Hands-free: Answer/end calls with phone button on remote or unit.
Audio Streaming: Stream music from compatible Bluetooth devices.
Phonebook: Access contacts through the unit's display.

WARNING! Use hands-free features responsibly while driving.

USB and Auxiliary Input

Connect external devices for expanded audio options.

USB Connection: Connect USB flash drives or compatible devices.
File Support: MP3, WMA files up to 255 folders, 999 files.
Auxiliary Input: 3.5mm jack for smartphones, tablets, portable players.
Playback Control: Skip tracks, folder navigation, repeat functions.

CAUTION! Do not connect/disconnect USB devices while driving.

Security Features

Protect your investment with built-in security measures.

Detachable Faceplate: Remove when parked to deter theft. Security Code: 4-digit code prevents unauthorized use if power disconnected. Illumination Memory: Unit remembers last illumination setting.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Wiring/connections	Check fuse, wiring connections, ground connection.
No sound	Audio settings/speakers	Check volume, mute, fader balance, speaker connections.
CD won't play	Disc/format issue	Ensure disc is clean, check format compatibility, try different disc.
Poor radio reception	Antenna connection	Check antenna connection, ensure antenna is fully extended.
Bluetooth not connecting	Pairing/adapter	Ensure Bluetooth adapter installed, delete old pairings, restart pairing.

Reset: Disconnect battery for 1 minute to reset unit.

Service: Contact authorized Kenwood service center for repairs.