Kenwood Stereo Amplifier User Manuals

Kenwood stereo amplifiers are high-quality audio components designed for home audio systems, featuring multiple input options, tone controls, power output specifications, and connectivity for various audio sources. 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 Guide 8. Audio Settings 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Power amplifier section, input selector, tone controls, volume control, speaker outputs, remote control capability.

Feature	Description
Power Output	Various wattage options per model (typically 50W-200W per channel)
Input Selector	Multiple input sources (CD, AUX, TUNER, PHONO)
Tone Controls	Bass, treble, and balance adjustments
Speaker Outputs	Connections for main and remote speakers
Headphone Jack	For private listening
Remote Control	Infrared remote for basic functions
Power Switch	Main power on/off control
Volume Control	Rotary or digital volume adjustment
Input Sensitivity	Adjustable input level matching
Protection Circuit	Overload and thermal protection

Installation

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

Connect speakers: Use speaker wire to connect main speakers to appropriate terminals.
Connect audio sources: Use RCA cables to connect CD player, tuner, or other sources.
Connect power: Plug into AC power outlet.
Connect antenna: For tuner models, connect FM/AM antenna.

WARNING! Ensure proper ventilation; do not block ventilation openings. Use correct speaker impedance.

First-Time Setup

Power on amplifier; verify all connections.

Set input source: Rotate input selector to desired source (CD, AUX, etc.).
Adjust volume: Start with low volume and gradually increase.
Set tone controls: Begin with flat response (bass and treble at 12 o'clock).
Balance adjustment: Center balance control for equal left/right output.

CAUTION! Avoid turning volume to maximum immediately to prevent speaker damage.

Specifications

Power Output: 50W-200W per channel (model dependent)
Frequency Response: 20Hz-20kHz ±1dB
Total Harmonic Distortion: <0.1% at rated power
Input Sensitivity: 150mV-500mV
Input Impedance: 47k ohms
Speaker Impedance: 4-16 ohms
Signal-to-Noise Ratio: >90dB
Power Requirements: 120V AC, 60Hz
Dimensions: Varies by model (typically 17"W x 5"H x 14"D)

Controls and Settings

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

Remote Control: POWER, VOLUME UP/DOWN, MUTE, INPUT SELECTION.

Tone Controls: Bass (±10dB at 100Hz), Treble (±10dB at 10kHz). Balance: Adjusts left/right channel balance. Input Selector: CD, AUX, TUNER, PHONO. Loudness: Bass boost at low volumes. Speaker Selector: Main, Remote, or Both.

Connecting Devices

Audio Inputs: RCA jacks for various sources. Speaker Outputs: Binding posts or spring clips.

Turn off amplifier before connecting devices.
Match input sources to correct input jacks.
Ensure proper polarity for speaker connections.
Use appropriate gauge speaker wire for distance.

Tip: Keep audio cables away from power cords to reduce interference.

Operation Guide

Basic operation procedures for daily use.

Power on: Switch power button; wait for protection circuit to disengage.
Select source: Choose appropriate input for your audio source.
Adjust volume: Use volume control to desired listening level.
Tone adjustment: Modify bass and treble to suit music type.
Mute function: Press MUTE for temporary silence.
Speaker selection: Choose main, remote, or both speakers.
Headphone use: Plug headphones to mute speaker output automatically.

WARNING! Do not operate with cover removed. Avoid liquid exposure.

Audio Settings

Optimizing sound quality for different listening environments.

Bass Control: Adjust low frequencies (20Hz-300Hz). Treble Control: Adjust high frequencies (3kHz-20kHz). Balance: Correct left/right channel imbalance. Loudness: Compensates for Fletcher-Munson curves at low volumes. Direct Mode: Bypasses tone controls for pure signal path.

Care & Maintenance

Unplug before cleaning. Use soft, dry cloth for exterior. Clean controls with electronic contact cleaner if needed.

CAUTION! Do not use abrasive cleaners or solvents. Keep away from moisture and extreme temperatures.

Regulatory Information

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

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power cord/power switch	Check power cord connection; ensure power switch is on.
No sound	Input selection/volume	Verify correct input selected; check volume level; ensure speakers connected.
Distorted sound	Overload/speakers	Reduce volume; check speaker impedance compatibility.
One channel silent	Balance/connections	Check balance control; verify cable connections; test speaker.
Protection mode active	Overload/short circuit	Turn off and disconnect speakers; check for short circuits; allow to cool.

Reset: Power cycle unit if malfunction occurs.

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