Kenwood KDC X790 Manual

The Kenwood KDC X790 is a high-performance car stereo receiver featuring CD/MP3/WMA playback, USB connectivity, Bluetooth for hands-free calling and audio streaming, built-in amplifier (22W x 4 channels), customizable illumination, detachable faceplate security, and advanced audio controls with 13-band equalizer. Compatible with various audio sources and steering wheel control interfaces. Below are key sections for features, installation, operation, settings, and troubleshooting.

Features at a Glance

Key components: Main unit with detachable faceplate, Remote Control, Wiring harness, USB extension cable, Bluetooth module.

Feature	Description
CD/MP3/WMA Playback	Plays standard CDs and compressed audio files
USB Connectivity	Direct connection for USB storage devices
Bluetooth	Hands-free calling and audio streaming
Built-in Amplifier	22W x 4 channels maximum power
13-Band Equalizer	Precise audio frequency adjustment
Customizable Illumination	Selectable display colors
Detachable Faceplate	Theft deterrent security feature
Steering Wheel Control	Compatible with interface adapters
AUX Input	3.5mm auxiliary input for external devices
Preset Memory	18 FM/6 AM station presets

Installation

Professional installation recommended. Ensure vehicle battery is disconnected before beginning.

1. Remove existing stereo: Use appropriate removal tools for your vehicle.
2. Connect wiring harness: Match wire colors and functions carefully.
3. Connect antenna: Plug in vehicle antenna cable.
4. Mount unit: Secure in dashboard using supplied mounting sleeve.
5. Connect power: Reconnect vehicle battery and test functions.

WARNING! Incorrect installation may damage unit or vehicle electrical system. Always disconnect battery before installation.

Basic Operation

Power on unit by pressing SRC/OFF button. Detach faceplate for security when leaving vehicle.

1. Source selection: Press SRC to cycle through available sources (Tuner, CD, USB, BT, AUX).
2. Volume control: Turn knob or use remote control volume buttons.
3. Preset stations: Store stations by holding desired preset button.
4. CD operation: Insert disc label side up; use skip buttons for track navigation.
5. Mode selection: Access different audio modes via FUNCTION button.

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

Specifications

• Power Output: 22W x 4 channels (max)
• Tuner: FM/AM with 18FM/6AM presets
• Audio Formats: CD-DA, MP3, WMA
• Frequency Response: 10Hz - 20kHz
• Signal-to-Noise: 95dB (CD)
• Bluetooth: Version 2.1 + EDR
• USB: Supports USB 2.0 devices
• Illumination: 13-color customizable
• Dimensions: Standard DIN size (178mm x 50mm)

Controls and Functions

Front Panel: SRC/OFF, Volume knob, Eject, Function, Audio controls. Remote: Full function remote included.

Main Controls: SRC (source selection), VOL (volume), BAND (tuner band), MUTE, FUNCTION (mode access), AUDIO (sound settings).

Display: Shows current source, track info, time, and settings. Illumination: Press COLOR button to cycle through 13 color options. Security: Detach faceplate by pressing release button and pulling forward.

Audio Settings

Access audio menu via AUDIO button. Adjust to personal preference.

1. Equalizer: 13-band graphic EQ with preset curves (POP, ROCK, JAZZ, etc.)
2. Loudness: Enhances bass at low volumes
3. Balance/Fader: Adjust speaker output balance
4. Subwoofer: Control for external subwoofer systems
5. Time Alignment: Advanced speaker timing adjustment

Tip: Save settings by pressing and holding AUDIO button for 2 seconds.

Bluetooth Connectivity

Pair mobile devices for hands-free calling and audio streaming.

1. Enable pairing: Press BT button until "PAIRING" appears.
2. Search device: On mobile device, search for "KENWOOD" in Bluetooth settings.
3. Connect: Select "KENWOOD" and enter PIN "0000" if prompted.
4. Make calls: Use dial function or voice commands through connected phone.
5. Stream audio: Select BT Audio source to play music from paired device.

WARNING! Only use hands-free features while vehicle is parked. Driving while distracted is dangerous.

USB and External Devices

Connect USB devices or auxiliary input for expanded audio sources.

1. USB connection: Use supplied extension cable for USB storage devices.
2. File support: MP3 and WMA files from folders and subfolders.
3. Navigation: Use folder/track buttons to browse music library.
4. Auxiliary input: Connect 3.5mm cable from external audio devices.
5. Playback control: Play, pause, skip functions available for all sources.

CAUTION! Do not remove USB device during playback. Ensure proper file format compatibility.

Security Features

Detachable faceplate: Primary theft deterrent. Remove when leaving vehicle unattended.

Security code: Optional code can be set to prevent unauthorized use if stolen.

Regulatory Information

FCC Part 15: Class B digital device compliant. Bluetooth qualified design. Copyright © Kenwood Corporation. For technical support, visit www.kenwood.com or contact authorized Kenwood service centers. This device complies with part 15 of the FCC Rules.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Wiring/faceplate	Check power connections; ensure faceplate properly attached
No sound	Settings/speakers	Check mute function; verify speaker connections; adjust volume
Bluetooth not connecting	Pairing mode/distance	Ensure pairing mode active; move device closer; delete old pairing
CD not playing	Disc/damage	Check disc for scratches; ensure proper format; clean lens if needed
USB not recognized	Format/power	Use FAT32 format; ensure adequate power for device; try different USB

Reset: Disconnect battery for 1 minute to reset unit.

Service: Contact authorized Kenwood service center for repairs.