REL HT/1003 MKII 10-Inch Powered Subwoofer User Manual

Introduction

Thank you for choosing the REL HT/1003 MKII 10-Inch Powered Subwoofer. This manual provides essential information for the proper setup, operation, and maintenance of your new subwoofer. Designed for deep bass in home theater, stereo systems, and surround sound, the HT/1003 MKII offers seamless integration and powerful performance. Please read this manual thoroughly before use to ensure optimal performance and safety.

Safety Information

Always observe the following safety precautions to prevent electric shock, fire, or damage to the unit:

• Do not expose this appliance to rain or moisture.
• Do not place objects filled with liquids, such as vases, on the apparatus.
• Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
• Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
• Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
• Only use attachments/accessories specified by the manufacturer.
• Unplug this apparatus during lightning storms or when unused for long periods of time.
• Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
• Proposition 65 Warning: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

What's in the Box

Upon unpacking, please ensure all items are present:

• REL HT/1003 MKII Subwoofer (1 unit)
• Power Cord
• User Manual (this document)

Product Overview

The REL HT/1003 MKII is a compact yet powerful 10-inch powered subwoofer designed to deliver deep, impactful bass for both home theater and stereo music systems. It features a Class D amplifier and is available in a line-grained white finish.

Key Features

• Seamless Integration: Easily connects to any home theater or stereo system with Left and Right RCA outputs or a dedicated subwoofer output.
• Powerful Bass: Equipped with a 10-inch driver and a 300 Watt (RMS) Class D amplifier for robust low-frequency reproduction.
• Versatile Connectivity: Supports both High Level and RCA connection methods.
• Compact Design: Its dimensions (14.25"W x 13.25"H x 15.25"D) allow for flexible placement in various room sizes.

Visual Guide

Setup

1. Placement

Optimal placement of your subwoofer is crucial for sound quality. Experiment with different locations in your room. Generally, corner placement can enhance bass output, while placement along a wall can provide a more balanced sound. Consider the room's acoustics and your primary listening position.

2. Connections

The HT/1003 MKII offers flexible connection options:

• For Home Theater (LFE/Subwoofer Output): Connect an RCA cable from your AV receiver's dedicated subwoofer output (LFE or Sub Out) to the LFE input on the REL HT/1003 MKII rear panel. This is the recommended connection for movie watching.
• For Stereo Music (Left/Right RCA Outputs): For music listening, connect RCA cables from your stereo amplifier's Left and Right RCA outputs (if available) to the corresponding Left and Right RCA inputs on the REL HT/1003 MKII. Alternatively, you can still use the dedicated subwoofer output from your receiver for music.
• Power Connection: Once audio connections are made, connect the supplied power cord to the AC inlet on the subwoofer's rear panel and then to a suitable wall outlet.

Ensure all connections are secure before proceeding.

3. Initial Power On

After making all connections, switch on the power to the subwoofer using the power switch located on the rear panel. The power indicator light should illuminate.

Operating

The REL HT/1003 MKII features several controls on its rear panel to fine-tune its performance to your listening environment and preferences.

Controls Overview (Refer to Rear Panel Image)

• Volume/Gain Control: Adjusts the overall output level of the subwoofer. Start with a low setting and gradually increase until the bass blends seamlessly with your main speakers.
• Crossover Frequency Control: Determines the upper frequency limit at which the subwoofer operates. This should be set to blend with the low-frequency roll-off of your main speakers. Common settings range from 80Hz to 120Hz for home theater.
• Phase Switch (0°/180°): Adjusts the phase of the subwoofer's output relative to your main speakers. Experiment with both settings to find the one that produces the most impactful and coherent bass at your listening position. The correct setting will result in the loudest and clearest bass.

Usage Tips

• Break-in Period: Allow for a break-in period of several hours of use for the driver to loosen up and achieve its full performance potential.
• Fine-Tuning: After initial setup, play various types of content (movies, music) and make small adjustments to the volume, crossover, and phase controls until the bass sounds natural and integrated, not boomy or disconnected.
• Room Acoustics: Room acoustics significantly impact bass performance. Small adjustments to subwoofer placement can often yield significant improvements.

Maintenance

Proper care will ensure the longevity and continued performance of your REL HT/1003 MKII subwoofer.

• Cleaning: Use a soft, dry cloth to wipe the cabinet. For stubborn marks, a slightly damp cloth can be used, followed immediately by a dry cloth. Avoid abrasive cleaners, solvents, or chemical sprays.
• Ventilation: Ensure that the subwoofer's ventilation openings are not obstructed. Adequate airflow is essential to prevent overheating.
• Placement: Avoid placing the subwoofer in direct sunlight or near heat sources, as this can damage the finish and internal components.
• Power Off: If the subwoofer will not be used for an extended period, it is advisable to unplug it from the power outlet.

Troubleshooting

If you experience issues with your subwoofer, refer to the table below for common problems and their solutions.

Specifications

Warranty and Support

Warranty Information

The REL HT/1003 MKII Subwoofer comes with a Limited Warranty provided by REL Acoustics. Please refer to the warranty card included with your product or visit the official REL Acoustics website for detailed terms and conditions regarding coverage, duration, and claims procedures. Keep your proof of purchase for warranty validation.

Customer Support

For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact REL Acoustics customer support. You can typically find contact information (phone, email, or support portal) on the official REL Acoustics website (rel.net) or through your authorized dealer.