Kenwood SW 35HT Manual

The Kenwood SW 35HT is a high-performance subwoofer system designed to deliver powerful bass response for home audio setups. Featuring a 35cm driver, built-in amplifier, adjustable crossover frequency, phase control, and auto power on/off functionality. Compatible with various audio systems and receivers. 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 to Audio Systems 7. Operation 8. Maintenance 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: 35cm bass driver, built-in amplifier, line-level inputs, speaker-level inputs, phase switch, crossover frequency control.

Feature	Description
Driver Size	35cm (14-inch) high-excursion woofer
Amplifier Power	Built-in 150W RMS amplifier
Frequency Response	25Hz - 150Hz
Crossover Frequency	50Hz - 150Hz adjustable
Phase Control	0°/180° phase switch
Inputs	Line-level RCA, Speaker-level terminals
Auto Power	Auto on/off with signal detection
Power Mode Switch	Auto/On/Off selection
Volume Control	Adjustable output level
Power Requirements	AC 120V, 60Hz

Installation

Unpack and inspect contents. Choose optimal placement for bass response.

Position subwoofer: Place in corner for maximum bass reinforcement.
Connect to amplifier: Use line-level RCA cables or speaker wire connections.
Power connection: Plug into AC power outlet.
Initial settings: Set volume to mid-level, crossover to 80Hz.

WARNING! Subwoofer is heavy; lift with proper technique. Ensure adequate ventilation around unit.

First-Time Setup

Power on subwoofer; configure basic settings.

Power mode: Set to AUTO for automatic operation.
Crossover frequency: Adjust based on main speakers' capabilities.
Phase control: Set to 0° initially, adjust if needed.
Volume level: Start at 50%, adjust to match main speakers.
Test operation: Play audio content with bass to verify operation.

CAUTION! Avoid placing near heat sources or in damp environments.

Specifications

Driver: 35cm (14-inch) high-excursion woofer
Amplifier Power: 150W RMS
Frequency Response: 25Hz - 150Hz
Crossover Range: 50Hz - 150Hz continuously variable
Inputs: Line-level RCA, Speaker-level terminals
Phase Control: 0°/180° switch
Auto Power: Signal-sensing auto on/off
Power Supply: AC 120V, 60Hz
Dimensions: Standard subwoofer cabinet size
Weight: Approximately 18kg

Controls and Settings

Rear panel controls: Power mode switch, Volume control, Crossover frequency, Phase switch, Input connections.

Power Modes: AUTO (auto on/off), ON (continuous operation), OFF (power off).

Volume: Adjusts subwoofer output level. Crossover: Sets frequency cutoff point. Phase: Aligns subwoofer phase with main speakers. Inputs: Line-level for preamp connections, Speaker-level for amplifier connections.

Connecting to Audio Systems

Line-level connection: RCA cables from receiver subwoofer output. Speaker-level connection: Speaker wires from amplifier outputs.

Turn off all equipment before connecting.
Choose connection method based on available outputs.
Ensure secure connections to prevent signal loss.
Power on equipment in sequence: Source > Amplifier > Subwoofer.

Tip: Use high-quality cables for best performance.

Operation

Normal operation in AUTO mode: Powers on automatically when signal detected.

Power on: Set power mode to AUTO or ON.
Adjust volume: Set to blend with main speakers.
Fine-tune crossover: Match to main speakers' bass capabilities.
Phase adjustment: Switch between 0° and 180° for best integration.
Auto standby: Unit enters standby after approximately 10 minutes of no signal.

WARNING! Do not block ventilation ports. Allow proper airflow.

Maintenance

Unplug before cleaning. Use soft, dry cloth for exterior. Avoid liquids.

CAUTION! Do not open cabinet. Refer servicing to qualified personnel.

Regulatory Information

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound	Power/connections	Check power connection; verify input source; ensure volume not at minimum.
Auto power not working	Signal level/mode	Increase source volume; check power mode set to AUTO.
Distorted sound	Overload/placement	Reduce volume level; check for proper ventilation.
Hum or noise	Grounding/cables	Check cable connections; ensure proper grounding.
Weak bass	Settings/placement	Adjust volume and crossover; try different room placement.

Reset: Power cycle unit if experiencing issues.

Service: Contact authorized Kenwood service centers for repairs.