Kenwood Amplifier Manual

The Kenwood Amplifier is a high-performance audio amplifier featuring multiple input channels, advanced equalization controls, built-in protection circuitry, thermal management, and compatibility with various audio sources. With power outputs ranging from 50W to 200W per channel, it supports stereo and multi-channel configurations, includes tone controls, input sensitivity adjustment, speaker impedance matching, and remote turn-on capability. 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. Operation Modes 8. Protection Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Amplifier chassis, input/output terminals, control knobs, protection circuitry, cooling system.

Feature	Description
Input Channels	Multiple RCA inputs for various audio sources
Speaker Terminals	Binding posts for speaker connections
Power Switch	Main power on/off control
Volume Control	Master volume adjustment knob
Tone Controls	Bass and treble adjustment
Input Selector	Switch between different input sources
Protection LED	Indicates overload or thermal protection
Remote Turn-on	12V trigger input for system integration
Cooling Vents	Thermal management system
Power Cord	Detachable AC power cable

Installation

Unpack and inspect contents. Place on stable, well-ventilated surface.

Position amplifier: Ensure adequate ventilation space around unit.
Connect audio sources: Use RCA cables from source components to amplifier inputs.
Connect speakers: Use appropriate gauge speaker wire to binding posts.
Connect power: Plug into AC outlet matching voltage requirements.
System integration: Connect remote turn-on if available.

WARNING! Ensure proper ventilation to prevent overheating. Use correct speaker impedance matching.

First-Time Setup

Power on amplifier; follow proper startup sequence.

Power sequence: Turn on source components first, then amplifier.
Input selection: Set input selector to desired source.
Volume adjustment: Start with volume at minimum, gradually increase.
Tone settings: Adjust bass and treble to listening preference.
Balance control: Set left/right channel balance if available.

CAUTION! Always use proper shutdown sequence: Amplifier off first, then source components.

Specifications

Power Output: 50W-200W per channel (depending on model)
Frequency Response: 20Hz-20kHz ±1dB
Total Harmonic Distortion: <0.1% at rated power
Signal-to-Noise Ratio: >90dB
Input Sensitivity: 200mV-2V adjustable
Input Impedance: 47k ohms
Speaker Impedance: 4-16 ohms compatible
Power Requirements: 110-240V AC, 50/60Hz
Dimensions: Standard rack-mount or component size
Weight: 5-15kg depending on model

Controls and Settings

Front panel controls: POWER, INPUT SELECTOR, VOLUME, BASS, TREBLE, BALANCE.

Rear Panel: AC power input, speaker terminals, RCA inputs, remote turn-on, fuse holder.

Input Selection: Choose between CD, AUX, TUNER, PHONO inputs. Tone Controls: Bass ±10dB, Treble ±10dB. Balance: Adjust left/right channel levels. Protection: Automatic thermal and overload protection with status LED.

Connecting Devices

Audio Sources: RCA inputs for various components. Speakers: Binding post outputs.

Turn off all components before connecting.
Connect source components using quality RCA cables.
Connect speakers ensuring proper polarity (+/-).
Use appropriate speaker wire gauge for distance and power.
Connect AC power last after all other connections.

Tip: Keep signal cables away from power cables to minimize interference.

Operation Modes

Supports stereo and bridged mono operation.

Stereo Mode: Standard left/right channel operation.
Bridged Mode: Combine channels for higher power output.
Input Selection: Switch between multiple audio sources.
Volume Control: Gradual adjustment from minimum to desired level.
Tone Adjustment: Fine-tune bass and treble response.
Balance Control: Adjust left/right channel balance.

WARNING! Do not operate without proper load. Avoid shorting speaker terminals.

Protection Features

Thermal Protection: Automatic shutdown if overheating detected. Overload Protection: Circuitry protects against short circuits and excessive current. DC Protection: Prevents DC offset damage to speakers.

Care & Maintenance

Unplug before cleaning. Use dry cloth only; no liquids or chemicals. Ensure ventilation ports remain clear.

CAUTION! Do not block ventilation openings. Keep away from moisture and extreme temperatures.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. CE certified for European markets. RoHS compliant. Copyright © 2006 Kenwood Corporation; trademarks of Kenwood. For support, visit www.kenwood.com or contact authorized service centers.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power cord/fuse	Check power connection; replace fuse if blown.
No sound	Connections/volume	Check input selection; verify source is playing; adjust volume.
Distorted sound	Overload/speakers	Reduce volume; check speaker impedance; verify connections.
Protection mode active	Overheating/short	Allow cooling; check for short circuits; reduce volume.
Hum or noise	Grounding/cables	Check ground connections; reposition cables away from power sources.

Reset: Power cycle amplifier if protection mode activates.

Service: Contact authorized Kenwood service centers; www.kenwood.com