Kenwood SP 31 Manual

The Kenwood SP 31 is a high-performance audio system featuring advanced sound technology, multiple connectivity options, and user-friendly controls. This manual provides comprehensive guidance on setup, operation, maintenance, and troubleshooting for optimal performance.

Features at a Glance

Key components: High-fidelity speakers, remote control, multiple input options, digital display, and advanced audio processing.

Feature	Description
Power Output	50W RMS per channel
Input Options	AUX, Bluetooth, USB, Optical
Frequency Response	20Hz - 20kHz
Remote Control	Full function remote included
Display	LED display with track information
Equalizer	5-band digital equalizer
Power Supply	110-240V AC, 50/60Hz
Dimensions	300 x 200 x 150 mm
Weight	5.5 kg
Warranty	2 years limited warranty

Installation

Unpack and inspect all components. Place on stable, level surface away from heat sources.

1. Position speakers: Place main unit on stable surface, ensure proper ventilation.
2. Connect power: Use provided power cable to connect to AC outlet.
3. Connect audio sources: Use appropriate cables for AUX, optical, or USB connections.
4. Pair Bluetooth devices: Enable pairing mode for wireless connections.

WARNING! Do not place near water sources or in humid environments. Ensure proper ventilation around unit.

First-Time Setup

Power on system; follow initialization procedure.

1. Power connection: Connect to AC power source, press power button.
2. Source selection: Use INPUT button to select desired audio source.
3. Volume adjustment: Set initial volume to medium level.
4. Bluetooth pairing: Hold pairing button until LED flashes, select "Kenwood SP 31" on your device.
5. Equalizer settings: Access audio menu to set preferred sound profile.

CAUTION! Avoid maximum volume during initial setup to prevent speaker damage.

Specifications

• Power Output: 50W RMS per channel (100W total)
• Impedance: 8 ohms
• Signal-to-Noise Ratio: >90dB
• Total Harmonic Distortion: <0.1%
• Input Sensitivity: 200mV
• Bluetooth Version: 5.0 with aptX support
• Supported Formats: MP3, WMA, WAV, FLAC
• USB Support: Up to 128GB FAT32
• Operating Temperature: 5°C to 35°C
• Storage Temperature: -20°C to 60°C

Controls and Settings

Front panel controls: POWER, VOLUME, INPUT SELECT, PLAY/PAUSE, MENU.

Remote Control: POWER, Numeric buttons, INPUT SELECT, VOLUME UP/DOWN, MUTE, PLAY/PAUSE, STOP, SKIP, MENU, EQ.

Audio Settings: BASS, TREBLE, BALANCE, LOUDNESS, SURROUND MODE. System Settings: DISPLAY BRIGHTNESS, STANDBY MODE, BLUETOOTH PAIRING, FACTORY RESET. Equalizer Presets: FLAT, ROCK, POP, JAZZ, CLASSICAL, USER.

Connecting Devices

Multiple connectivity options: AUX, Bluetooth, USB, Optical input.

1. AUX Input: Use 3.5mm stereo cable for analog devices
2. Bluetooth: Enable pairing mode, connect from source device
3. USB: Insert USB device for direct playback
4. Optical: Use Toslink cable for digital audio sources

Tip: For best audio quality, use optical connection for digital sources.

Audio Playback

Supports various audio sources and playback modes.

1. Source Selection: Press INPUT to cycle through available sources
2. Playback Control: Use PLAY/PAUSE, STOP, SKIP buttons
3. Volume Adjustment: Use VOLUME buttons or remote control
4. Mute Function: Press MUTE to temporarily silence audio
5. Repeat Modes: Single track, folder, or all tracks repeat
6. Shuffle Play: Random track selection for varied listening
7. Display Information: Track number, elapsed time, file format

WARNING! Do not insert foreign objects into ports or openings.

Advanced Features

5-band Equalizer: Adjust 60Hz, 250Hz, 1kHz, 4kHz, 16kHz bands. Surround Sound: Virtual surround processing. Loudness Control: Automatic bass boost at low volumes. Sleep Timer: Automatic shut-off from 15 to 90 minutes.

Care & Maintenance

Unplug unit before cleaning. Use soft, dry cloth for exterior surfaces. For stubborn stains, use mild detergent on damp cloth.

CAUTION! Never use abrasive cleaners or solvents. Avoid liquid contact with controls and openings.

Regulatory Information

FCC Compliance: This device complies with Part 15 of FCC rules. CE Mark: Meets European safety standards. RoHS Compliant: Free of hazardous substances. For support, visit www.kenwood.com or contact 1-800-536-9663.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power cable disconnected	Check power connection; ensure outlet is working
No sound	Volume low/muted	Adjust volume; check mute status; verify source
Bluetooth not connecting	Pairing mode not active	Enable pairing mode; check device compatibility
USB not recognized	Format incompatible	Use FAT32 format; check file compatibility
Distorted sound	Volume too high	Reduce volume; check audio source quality
Remote not working	Batteries depleted	Replace batteries; ensure line of sight

Reset: Hold POWER + MENU for 10 seconds to factory reset.

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