Kenwood Series 21 Manual

The Kenwood Series 21 is a premium audio system featuring advanced digital processing, multiple input options, high-fidelity sound reproduction, built-in amplifier, FM/AM tuner, CD player compatibility, Bluetooth connectivity, USB input, auxiliary input, remote control, equalizer settings, and preset memory functions. Powered by 110-240V AC, 50/60Hz. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Playing Media 8. Audio Settings 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Main unit with digital display, Remote Control, Speaker terminals, USB port, AUX input, Bluetooth pairing button, Power connector.

Feature	Description
Speaker terminals	For connecting external speakers (4-16 ohm)
USB port	For USB storage devices and charging
AUX input	3.5mm jack for external audio sources
Bluetooth	Wireless audio streaming capability
Power connector	For AC power connection
Digital display	Shows track info, settings, and status
POWER	Turns system on/off
VOLUME	Adjusts audio output level
SOURCE	Selects input source (USB, BT, AUX, TUNER)
PRESET	Stores and recalls favorite stations

Installation

Unpack and inspect contents. Place on stable, level surface.

Connect speakers: Match polarity (+/-) to speaker terminals.
Connect power: Plug into appropriate AC outlet.
Connect audio sources: Use AUX input for external devices.
Position antennas: Extend FM/AM antennas for best reception.

WARNING! Ensure proper ventilation; do not block cooling vents. Keep away from heat sources.

First-Time Setup

Power on system; follow initial setup procedure.

Set language: In SYSTEM menu, select preferred language.
Tune radio: Auto-scan or manually tune FM/AM stations.
Store presets: Save favorite stations to preset buttons.
Pair Bluetooth: Enable pairing mode and connect mobile device.
Adjust audio: Set bass, treble, and balance to preference.

CAUTION! Handle with care; avoid dropping or impact damage.

Specifications

Power Output: 50W RMS per channel (8 ohm)
Frequency Response: 20Hz - 20kHz (±1dB)
Signal-to-Noise: >90dB
Inputs: USB, AUX, Bluetooth, FM/AM tuner
Bluetooth: Version 4.2, A2DP profile
Supported formats: MP3, WMA, WAV, FLAC
Power Supply: 110-240V AC, 50/60Hz
Dimensions: 430mm (W) x 320mm (D) x 120mm (H)
Weight: 5.2 kg

Controls and Settings

Access menu system via FUNCTION button. Front Panel: POWER, VOLUME, SOURCE, PRESET, TUNING, MENU.

Remote: POWER, Numeric buttons, VOLUME, MUTE, SOURCE, PRESET, PLAY/PAUSE, SKIP, MENU, EQ.

Audio Settings: BASS, TREBLE, BALANCE, LOUDNESS. System: LANGUAGE, CLOCK, SLEEP TIMER, RESET. Bluetooth: PAIRING, DEVICE LIST. Tuner: AUTO SCAN, MANUAL TUNE, PRESET MEMORY.

Connecting Devices

USB: For storage devices and firmware updates. AUX: For external audio sources. Bluetooth: For wireless streaming.

Turn off system before connecting wired devices.
Use quality cables for best audio performance.
Select appropriate source via SOURCE button.
For Bluetooth: Enable pairing mode and search from mobile device.

Tip: Keep Bluetooth devices within 10 meters for stable connection.

Playing Media

Supports USB playback, Bluetooth streaming, and auxiliary input.

USB playback: Insert USB device, select USB source.
Navigate files: Use folder navigation or direct track selection.
Playback controls: PLAY/PAUSE, SKIP, REPEAT, SHUFFLE.
Bluetooth: Pair device once, automatic connection thereafter.
AUX input: Connect device, select AUX source, play from source.

WARNING! Safely eject USB devices before removal. Do not disconnect during playback.

Audio Settings

Equalizer: PRESET (POP, ROCK, JAZZ, CLASSICAL, FLAT) or CUSTOM. Sound Effects: LOUDNESS, BASS BOOST, SURROUND. Balance: L/R speaker balance adjustment.

Care & Maintenance

Unplug before cleaning. Use soft, dry cloth for exterior. Compressed air for vents.

CAUTION! Do not use liquid cleaners. Avoid moisture contact. Store in dry environment.

Regulatory Information

FCC Part 15: Class B digital device compliant. CE marked for European market. RoHS compliant. Copyright © 2024 Kenwood Corporation. All trademarks property of their respective owners. For support, visit www.kenwood.com or contact 1-800-536-9663.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power cord/outlet	Check power connection; try different outlet; ensure power switch on.
No sound	Volume/speakers	Check volume level; verify speaker connections; ensure mute off.
Bluetooth not connecting	Pairing/distance	Enable pairing mode; check device compatibility; reduce distance.
Poor radio reception	Antenna/position	Extend antennas fully; reposition unit; check for interference.
USB not recognized	Format/compatibility	Check file format support; try different USB device; reformat if needed.

Reset: Menu > System > Factory Reset if experiencing persistent issues.

Service: 1-800-536-9663; www.kenwood.com