Introduction
This manual provides comprehensive instructions for the setup, operation, and maintenance of your REL HT/1510 Predator 15-inch Powered Subwoofer. Designed to deliver impactful deep bass, this subwoofer is suitable for enhancing both HiFi home theater systems and audiophile stereo setups. Please read this manual thoroughly before using the product to ensure proper functionality and longevity.
Key Features
- Exceptional Bass Performance: Features a large 15-inch driver for deep, impactful bass.
- High-Performance Amplifier: Equipped with a powerful 1000-watt Class D amplifier for precise and dynamic sound.
- Versatile Application: Ideal for premium home theater systems, audiophile stereo setups, and surround sound configurations.
- Large Space Suitability: Capable of producing bass down to 20Hz at -6dB, suitable for listening spaces up to 800 sq ft.
- Flexible Connection Options: Offers RCA and XLR inputs for movies, and RCA or subwoofer output for music.
- Compact Design: Despite its powerful performance, the unit maintains a compact form factor for integration into various decors.
- Line Array Compatibility: Designed to be stacked for line array configurations, allowing for enhanced performance in larger areas.
Package Contents
Upon unpacking, please ensure all the following items are present:
- REL HT/1510 Predator Subwoofer Unit
- User Manual (this document)
- Power Cord
- Hardware for stacking (if creating a line array of up to 3 units tall)
If any items are missing or damaged, please contact your retailer or REL Acoustics customer support.
Setup and Placement
Proper placement of your REL HT/1510 Predator subwoofer is crucial for optimal performance. Consider the acoustics of your room and the primary use (home theater or music) when deciding on placement.
Subwoofer Placement
For home theater applications, placing the subwoofer in a corner or along a wall can often enhance bass output. Experiment with different positions to find the best balance of depth and clarity for your listening environment. For music, a position between the main stereo speakers or slightly to the side can provide seamless integration.

Image: REL HT/1510 Predator subwoofer in a typical living room setup.
The HT/1510 Predator is designed to be compact for a 15-inch subwoofer, allowing for easier integration into various room decors.
Line Array Configuration
For larger rooms or to achieve maximum impact, multiple HT/1510 Predator units can be stacked to form a line array. The included hardware facilitates stacking up to three units tall. This configuration can provide effortless scale and greater dynamic headroom.

Image: REL HT/1510 Predator subwoofers configured as line arrays in a home theater setting.
Connecting Your Subwoofer
The REL HT/1510 Predator offers flexible connection options to integrate seamlessly with various audio systems.
Rear Panel Overview

Image: Rear panel of the REL HT/1510 Predator, highlighting various input and control options.
Home Theater (LFE) Connections
For movie playback and home theater systems, connect your subwoofer using either the RCA or XLR inputs to your receiver's dedicated subwoofer output (LFE channel). This provides the dedicated low-frequency effects channel for cinematic experiences.
- RCA Input: Use a single RCA cable from your receiver's LFE output to the LFE input on the subwoofer.
- XLR Input: For balanced connections, use an XLR cable from your processor's balanced LFE output to the XLR input on the subwoofer.
Music (Stereo) Connections
For optimal sound integration with music, connect the subwoofer using your Left and Right RCA outputs from your preamplifier or integrated amplifier. Alternatively, you can use the subwoofer output if your amplifier provides one.
- Stereo RCA: Connect Left and Right RCA cables from your amplifier's pre-out to the corresponding low-level inputs on the subwoofer.
- Subwoofer Output: If your amplifier has a dedicated subwoofer output for music, connect it to the LFE input on the subwoofer.
Ensure all connections are secure before powering on the unit.
Operation
Once connected, the REL HT/1510 Predator can be powered on and adjusted to suit your audio preferences and room characteristics.
Powering On/Off
Connect the supplied power cord to the subwoofer and a suitable AC outlet. Use the power switch on the rear panel to turn the unit on or off. The subwoofer may also feature an auto-on/standby mode, which activates the unit when an audio signal is detected and puts it into standby during periods of inactivity.
Adjusting Settings
The rear panel features controls for fine-tuning the subwoofer's output:
- Low Level/LFE Level: Adjusts the overall volume of the subwoofer. Start with a low setting and gradually increase until the bass blends seamlessly with your main speakers.
- Crossover: Sets the upper frequency limit for the subwoofer. This should be adjusted to integrate smoothly with the low-frequency capabilities of your main speakers.
- Phase: Allows you to adjust the phase of the subwoofer's output (0 or 180 degrees) to ensure it is in phase with your main speakers, preventing cancellation and improving bass impact.
Careful adjustment of these settings is essential for achieving optimal sound quality. Refer to the product overview video for visual guidance on these controls.
Product Overview Video
Video: A detailed product overview of the REL HT/1510 Predator, demonstrating its features and controls. This video provides visual instructions for setup and adjustment.
Technical Specifications
| Feature | Specification |
|---|---|
| Model Name | HT/1510 Predator |
| Speaker Type | Subwoofer |
| Subwoofer Diameter | 15 Inches |
| Speaker Maximum Output Power | 1000 Watts |
| Frequency Response | 20 Hz |
| Product Dimensions (D x W x H) | 19"D x 21"W x 18"H |
| Item Weight | 70 Pounds |
| Material | Horizontally Oriented Line Grained Composite |
| Power Source | AC |
| Connectivity Technology | Bluetooth (for app control), HT-Air, Airship II (Wireless) |
| Control Method | App |
| Surround Sound Channel Configuration | 5.1, 7.1 |
| UPC | 857316005645 |

Image: Dimensions of the REL HT/1510 Predator subwoofer.
Maintenance
To ensure the longevity and optimal performance of your REL HT/1510 Predator subwoofer, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to wipe down the exterior surfaces. Avoid abrasive cleaners, solvents, or chemical sprays, as these can damage the finish.
- Placement Environment: Place the subwoofer in a location free from excessive dust, moisture, and direct sunlight. Ensure adequate ventilation around the unit to prevent overheating.
- Power Disconnection: Always disconnect the power cord from the wall outlet before performing any cleaning or maintenance.
- Driver Care: Avoid touching the subwoofer driver directly, as this can cause damage.
Troubleshooting
If you encounter issues with your REL HT/1510 Predator, refer to the following common problems and solutions:
| Problem | Possible Cause / Solution |
|---|---|
| No Sound from Subwoofer |
|
| Distorted or Unclear Bass |
|
| Audible Buzzing Sound |
|
| Subwoofer Does Not Turn On Automatically |
|
For issues not covered here, please consult the REL Acoustics website or contact customer support.
Warranty and Support
The REL HT/1510 Predator subwoofer comes with a Limited Warranty. Please refer to the warranty card included with your product for specific terms and conditions. Keep your proof of purchase for warranty claims.
For technical assistance, troubleshooting, or warranty inquiries, please visit the official REL Acoustics website or contact their customer support directly. Contact information can typically be found on the manufacturer's website or in the product packaging.
Online Support: www.rel.net







