1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your ButtKicker BK-LFE Low Frequency Effects System. The ButtKicker BK-LFE is a powerful tactile transducer designed to enhance your audio experience by allowing you to feel low-frequency effects, transforming sound into physical sensation.
2. Product Overview
The ButtKicker LFE is a robust haptic transducer engineered for large installations, capable of delivering significant tactile response on various structures such as couches, theater seating, and platforms. Unlike traditional subwoofers that produce audible sound, the ButtKicker LFE operates as a "Silent Subwoofer," converting low-frequency audio signals into vibrations that you can feel. This patented 4-ohm transducer features a magnetically suspended piston, ensuring accurate and powerful frequency response from approximately 5Hz to 200Hz. It is designed for durability and requires minimal maintenance.

Figure 2.1: Main view of the ButtKicker BK-LFE unit, showcasing its robust design and connection terminals.
3. Key Features
- Offers true infrasonic, or low-frequency response with a resonant frequency of 9 Hz.
- Attaches to seats and floors, sending low-frequency sound directly into the listener's body.
- Accurately reproduces the "feeling" range of many natural and man-made sounds, such as earthquakes, thunderstorms, and music.
- Power handling ranges from a minimum of 400 watts to a 1,500-watt maximum.
- Compact dimensions: 5.375 x 5.5 x 5.375 inches (WxHxD), weighing 11 pounds.
- Patented magnetic suspension system for enhanced performance and durability.
- Virtually indestructible and maintenance-free design.
4. Specifications
| Specification | Value |
|---|---|
| Model Name | BK-LFE |
| Speaker Type | Subwoofer (Tactile Transducer) |
| Recommended Uses | Home Theater, Gaming, Music |
| Compatible Devices | Gaming Console, Television, Home Theater Systems |
| Product Dimensions (WxHxD) | 5.38" x 5.5" x 5.38" |
| Item Weight | 11 lbs (5 kg) |
| Nominal Impedance | 4 ohms |
| Power Handling (Min/Max) | 400 watts / 1500 watts |
| Frequency Response | 5 - 200 Hz |
| Piston Weight | 3.75 lbs (1.48 kg) |
| Connectivity Technology | Wired |
| Mounting Type | Floor Mount (or direct to structure) |
| Color | Black |
5. Setup Instructions
Proper setup is crucial for optimal performance of your ButtKicker BK-LFE system. The unit requires an external power amplifier (not included) to operate.
5.1. Mounting the ButtKicker LFE
- Choose a Mounting Location: The ButtKicker LFE is designed to be mounted directly to a rigid structure that you wish to vibrate, such as the frame of a couch, a theater seating riser, or a gaming platform. Ensure the mounting surface is solid and capable of transferring vibrations effectively.
- Secure Attachment: Use appropriate hardware (not included) to firmly attach the ButtKicker LFE to the chosen structure. Ensure all mounting points are tight to prevent rattling and maximize vibration transfer.
- Isolation (Recommended): For best results and to prevent unwanted vibrations from transferring to the floor or other parts of the room, consider using isolation feet or a floating platform for the furniture or structure the ButtKicker is attached to. This allows the energy to be concentrated where it is intended.

Figure 5.1: Front view of the ButtKicker BK-LFE, showing the mounting brackets.
5.2. Connecting to an Amplifier
- Amplifier Requirements: The ButtKicker LFE requires a power amplifier capable of delivering between 400 watts (minimum) and 1500 watts (maximum) into a 4-ohm load. Ensure your amplifier meets these specifications.
- Wiring: Connect the speaker output terminals of your amplifier to the input terminals of the ButtKicker LFE using high-quality speaker wire. Observe correct polarity (+ to + and - to -).
- Audio Source: Connect your audio source (e.g., AV receiver's LFE/subwoofer output, dedicated sound card output) to the input of your power amplifier.
- Low-Pass Filter: It is highly recommended to use a low-pass filter on your amplifier or AV receiver to send only low-frequency signals (typically below 200Hz, often 80-120Hz for LFE channels) to the ButtKicker LFE. This optimizes performance and prevents the unit from attempting to reproduce higher frequencies it is not designed for.

Figure 5.2: Side view of the ButtKicker BK-LFE, highlighting the input terminals for amplifier connection.
6. Operating Instructions
Once properly installed and connected, operating the ButtKicker BK-LFE is straightforward.
- Power On: Turn on your audio source and the dedicated power amplifier connected to the ButtKicker LFE.
- Adjust Amplifier Gain: Start with the amplifier's gain (volume) control at a low setting. Play audio content with significant low-frequency effects (e.g., a movie scene with explosions, bass-heavy music).
- Fine-Tune Intensity: Gradually increase the amplifier's gain until you achieve the desired level of tactile sensation. The goal is to feel the effects without them being overwhelming or distracting. Avoid setting the gain too high, which can lead to "bottoming out" (the piston hitting its limits), indicated by a harsh thumping sound.
- System Integration: For home theater setups, balance the ButtKicker's intensity with your audible subwoofer's output for a cohesive experience. Many users find that a slightly lower audible subwoofer level combined with the ButtKicker provides a more immersive and less fatiguing experience.

Figure 6.1: Back view of the ButtKicker BK-LFE, showing the product label with specifications.
7. Maintenance
The ButtKicker BK-LFE is designed to be virtually maintenance-free due to its robust construction and patented magnetic suspension system.
- Cleaning: Periodically wipe the exterior of the unit with a soft, dry cloth to remove dust. Do not use liquid cleaners or solvents.
- Inspection: Occasionally check all mounting hardware and electrical connections to ensure they remain secure.
- No User-Serviceable Parts: The ButtKicker BK-LFE contains no user-serviceable parts. Do not attempt to open or repair the unit, as this will void the warranty.
8. Troubleshooting
If you experience issues with your ButtKicker BK-LFE, consult the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| No tactile output |
|
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| "Bottoming out" or harsh thumping sound |
|
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| Weak or inconsistent vibration |
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Figure 8.1: Dimensional diagram of the ButtKicker BK-LFE, showing its compact size.
9. Warranty and Support
The ButtKicker BK-LFE Low Frequency Effects System comes with a Limited Warranty. For specific warranty terms and conditions, please refer to the documentation provided with your purchase or visit the official Buttkicker website.
For technical support, troubleshooting assistance beyond this manual, or warranty claims, please contact Buttkicker customer service. Contact information can typically be found on the manufacturer's website or on your product packaging.
Online Resources: For additional information, FAQs, and community support, visit the official Buttkicker website: www.thebuttkicker.com





