1. Introduction and Overview
The Earthquake Sound SUB6 passive subwoofer is designed to deliver impressive bass from a shallow space, making it ideal for in-wall and in-ceiling applications. Featuring the patented Shallow Woofer System (SWS) design, this subwoofer offers twice the excursion of conventional speakers with the same mounting depth. It includes a 100% copper wire crossover network to filter out voices and instruments, ensuring pure bass output. Constructed from high-quality components, the SUB6 is a versatile choice for enhancing audio in new constructions or existing home theaters.
Key Features:
- Shallow Woofer System (SWS): Patented design for deep bass in low-profile installations.
- Lowpass Crossover Filter: Iron core 100% copper wire network for pure bass delivery.
- Inverted Cone Design: Maximizes excursion for powerful bass in shallow wall/ceiling mounts.
- Edgeless Design: Paintable round and square grilles (included) for a modern, discreet aesthetic.
- Easy Installation: Turn-N-Lock mechanism ensures fast, safe, and secure mounting.
2. What's in the Box
- SUB6 Subwoofer
- Round Grille
- Square Grille
- Cutout Template
- Product Manual
- Warranty Card
3. Setup and Installation
Proper installation is crucial for optimal performance and safety. This section guides you through the process of installing your SUB6 subwoofer.
3.1 Headroom Requirements
The SUB6 subwoofer has a depth of approximately 3.38 inches. When installing into a ceiling, ensure you have at least 12 inches of clear space (headroom) from the grille to the back of the unit. This allows sufficient room for wiring and securing the additional safety cable.
3.2 Mounting Bracket Assembly
The included metal mounting bracket provides stability, especially for drop ceiling installations. Assemble the two halves of the bracket, ensuring the side walls are pointing upwards. Secure them using the provided screws and bolts. For a drop ceiling, this bracket will sit on top of the ceiling tile to support the subwoofer's weight.
Figure 1: Assembled metal mounting bracket for the SUB6 subwoofer.
3.3 Cutting the Ceiling Tile
Use the provided cutout template or the mounting bracket itself to mark the circular opening on your ceiling tile. Carefully cut along the marked line using a utility knife or box cutter. It is recommended to make small, controlled cuts and to cut slightly inside the line initially, then trim as needed for a snug fit.
Figure 2: The SUB6 subwoofer with its round magnetic grille, ready for installation.
3.4 Securing the Subwoofer
Once the hole is cut, remove the magnetic grille from the subwoofer. Place the subwoofer through the opening in the ceiling tile. Position the mounting bracket over the subwoofer on the back side of the ceiling tile, aligning it with the plastic ring of the subwoofer. Activate the dog-ears by pulling them out and letting them drop. These dog-ears will secure the subwoofer to the ceiling tile. Use a Phillips head screwdriver to tighten the four screws, pulling the dog-ears firmly against the ceiling tile. Be careful not to overtighten and damage the tile.
Figure 3: Rear view of the SUB6 subwoofer, highlighting the wiring terminals and mounting points.
3.5 Safety Cable Installation
For added safety, always run an extra steel safety cable through the designated loop on the subwoofer and securely attach it to a structural element above the ceiling. Ensure the cable is tight to prevent excessive movement. This provides additional support in case of mounting failure.
3.6 Wiring the Subwoofer
The SUB6 uses a quick-disconnect Euro block terminal for wiring. Loosen the screws on the terminal to insert your speaker wires. The inner two terminals are for the incoming signal, and the outer two terminals are for sending the signal forward in a parallel chain. In a 70V system, all wiring is parallel. Connect positive speaker wire to positive terminals and negative to negative. For the last speaker in a chain, only use the incoming terminals.
Video 1: Detailed guide on how to set up your Rockville CC8-SUB, demonstrating principles applicable to the SUB6.
4. Operating the SUB6 (70V Tapping)
The SUB6 subwoofer is designed for 70V audio systems, which allow multiple speakers to be connected to a single amplifier without complex impedance matching. Each 70V speaker has a built-in transformer that allows you to select a fixed wattage output.
4.1 Adjusting the Wattage Tap
The SUB6 features a wattage tap switch located under the magnetic grille. This switch allows you to select different power settings (6.25W, 12.5W, 25W, 50W) or bypass the transformer for standard 8-ohm operation. Use a small flathead screwdriver to adjust the tap to your desired wattage. The 8-ohm setting bypasses the internal transformer, allowing the subwoofer to act as a standard speaker.
Figure 4: The SUB6 subwoofer with both round and square magnetic grilles included for versatile aesthetic integration.
When setting the tap, ensure your 70V amplifier is capable of producing more total wattage than the sum of all tapped speakers in your system. For example, if you have 10 speakers tapped at 10 watts each (100 watts total), your amplifier should be capable of producing at least 110 watts.
Video 2: Overview of the Rockville CC8-SUB, explaining 70V technology and tapping, relevant for SUB6.
5. Specifications
| Attribute | Value |
|---|---|
| Model Name | SUB6 |
| Speaker Type | Subwoofer |
| Subwoofer Diameter | 6.5 Inches |
| Speaker Maximum Output Power | 150 Watts |
| Impedance | 8 Ohms |
| Product Dimensions | 3.38"D x 8.75"W x 8.75"H |
| Item Weight | 2.5 Pounds (2.46 pounds) |
| Mounting Type | Ceiling Mount, Wall Mount |
| Connectivity Technology | Wired |
| Recommended Uses For Product | Home Audio |
| Compatible Devices | Gaming Console, Home Theater, Projector, Television |
| Water Resistance Level | Not Water Resistant |
6. Maintenance
To ensure the longevity and optimal performance of your SUB6 subwoofer, follow these general maintenance guidelines:
- Cleaning: Gently wipe the grilles and exposed surfaces with a soft, dry cloth. Avoid using harsh chemicals or abrasive cleaners.
- Inspection: Periodically check the mounting screws and safety cable to ensure they remain secure.
- Environment: Ensure the subwoofer is installed in a dry environment, as it is not water-resistant. Avoid extreme temperatures.
7. Troubleshooting
If you encounter issues with your SUB6 subwoofer, consider the following common troubleshooting steps:
- No Sound:
- Check all wiring connections at the subwoofer and amplifier. Ensure positive is connected to positive and negative to negative.
- Verify the amplifier is powered on and functioning correctly.
- Confirm the correct wattage tap setting on the subwoofer matches your amplifier's output capabilities.
- Distorted Sound:
- Reduce the volume level on your amplifier.
- Check the wattage tap setting; a higher setting might be overdriving the subwoofer or amplifier.
- Ensure speaker wires are not frayed or shorting.
- Weak Bass:
- Increase the wattage tap setting on the subwoofer (within amplifier limits).
- Adjust bass settings on your amplifier or audio source.
- Ensure proper headroom and enclosure for optimal bass response.
8. Warranty and Support
The Earthquake Sound SUB6 subwoofer comes with a Limited Warranty. Please refer to the included Warranty Card for specific terms and conditions.
For technical support, service, or warranty inquiries, please contact Earthquake Sound customer service through their official website or the contact information provided on your Warranty Card.
