Kenwood 940S Manual

The Kenwood 940S is a high-performance stereo receiver featuring 100W per channel, digital audio processing, AM/FM tuner with 40 presets, multiple audio inputs including phono, CD, tape, and auxiliary, speaker A/B switching, headphone output, remote control, tone controls, loudness compensation, and protection circuits. Powered by 120V AC, 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. Audio Source Selection 8. Tuner Operation 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Stereo amplifier section, AM/FM tuner, Remote Control, Speaker terminals, Headphone jack, Multiple audio inputs.

Feature	Description
Power output	100W per channel into 8 ohms
AM/FM tuner	40 station presets (20 AM, 20 FM)
Phono input	For turntable connection (MM cartridge)
CD input	For CD player connection
Tape inputs	For tape deck recording/playback
Auxiliary input	For additional audio sources
Speaker A/B switching	Select speaker pairs A, B, or A+B
Headphone output	For private listening
Tone controls	Bass and treble adjustment
Loudness compensation	Enhances bass at low volumes

Installation

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

Connect speakers: Use speaker wire to connect to A and/or B terminals.
Connect audio sources: Use appropriate inputs (phono, CD, tape, aux).
Connect antenna: Attach FM dipole antenna and AM loop antenna.
Plug into AC power outlet.

WARNING! Ensure proper ventilation; do not block heat sinks. Use correct speaker impedance (4-16 ohms).

First-Time Setup

Power on receiver; follow initial setup procedure.

Set speaker configuration: Select A, B, or A+B using speaker buttons.
Tune radio stations: Use auto-scan or manual tuning to find stations.
Store presets: Save favorite stations to preset memory.
Adjust tone settings: Set bass and treble to preference.

CAUTION! Ensure all connections are secure before powering on.

Specifications

Power Output: 100W per channel (8 ohms, 20Hz-20kHz)
Total Harmonic Distortion: 0.08% (rated power)
Frequency Response: 10Hz-100kHz (+1/-3dB)
Input Sensitivity: Phono: 2.5mV, CD: 200mV
Signal-to-Noise Ratio: Phono: 80dB, CD: 100dB
Tuner Section: AM/FM with 40 presets
Inputs: Phono, CD, Tape, Auxiliary
Outputs: Speaker A/B, Headphone, Tape record
Power Requirements: 120V AC, 60Hz, 350W
Dimensions: 17.1" W × 6.3" H × 15.7" D
Weight: 28.7 lbs

Controls and Settings

Front Panel: POWER, VOLUME, INPUT SELECTOR, TONE CONTROLS, SPEAKER SELECT, HEADPHONE JACK.

Remote: POWER, VOLUME, MUTE, INPUT SELECTION, TUNER PRESETS, TONE CONTROLS.

Input Selection: PHONO, CD, TAPE, AUX, TUNER. Tone Controls: BASS (±10dB), TREBLE (±10dB). Speaker Selection: A, B, A+B. Loudness: On/Off switch for bass enhancement.

Connecting Devices

Audio Sources: Phono for turntable, CD for CD player, Tape for deck, Aux for other sources.

Turn off receiver before connecting devices.
Use quality RCA cables for audio connections.
Connect turntable ground wire to ground terminal.
Select appropriate input source on front panel.

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

Audio Source Selection

Supports multiple audio inputs with individual level optimization.

Select input: Press INPUT button to cycle through sources.
Adjust volume: Use VOLUME control for desired listening level.
Tone adjustment: Use BASS and TREBLE controls as needed.
Speaker selection: Choose A, B, or both speaker pairs.
Headphone use: Plug headphones into front panel jack.

WARNING! Do not operate at maximum volume for extended periods.

Tuner Operation

AM/FM tuner with automatic and manual tuning modes.

Select tuner input: Press INPUT until TUNER is selected.
Tune stations: Use TUNE buttons or auto-scan function.
Store presets: Hold PRESET button while station is tuned.
Recall presets: Press numbered preset buttons.
FM stereo: Automatic stereo/mono switching.

Tip: Position FM antenna for best reception with minimal noise.

Care & Cleaning

Unplug before cleaning. Use soft, dry cloth for exterior. Use compressed air for dust removal from vents.

CAUTION! Do not use liquid cleaners; avoid moisture contact. Keep ventilation openings clear.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © 2006 Kenwood; trademarks of Kenwood Corporation. 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; check fuse.
No sound	Speaker connections/mute	Verify speaker wires; check mute function; ensure input selected.
Distorted sound	Volume level/speakers	Reduce volume; check speaker impedance; inspect cables.
Poor radio reception	Antenna placement	Reposition antennas; check connections; avoid obstructions.
Remote not working	Batteries/obstacles	Replace batteries; ensure line of sight to IR sensor.
Overheating	Ventilation/speakers	Ensure adequate ventilation; check speaker impedance.

Reset: Disconnect power for 30 seconds to reset protection circuits.

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