How To Set Up Your CC8-SUB

Introduction

The Rockville CC8 70 Volt In-Ceiling Subwoofer is a powerful addition to any commercial or residential audio setup. This subwoofer can be installed in either a drop ceiling tile or a sheetrock ceiling. Today, we will demonstrate how to install it into a drop ceiling tile, but the tips shared will also apply to sheetrock ceilings. The subwoofer is designed to deliver robust bass and enhance sound quality in large spaces while using 70 Volt technology.

Step-by-Step Instructions

Step 1: Preparation

1. Tools Needed:
   • Knife or box cutter
   • Philips screwdriver
   • Small flathead screwdriver (for wiring)
2. What’s Included in the Kit:
   • Metal mounting bracket for drop ceiling installation
   • Mounting hardware
   • Cutout guide (can be used for ceiling installations, but we'll show an alternative method)
   • Subwoofer with magnetic grill
   • Wiring materials for the 70 Volt system
3. Space Requirements:
   • Ensure you have at least 12 inches of headroom in your ceiling for the subwoofer’s 9-inch profile. This is essential for both installation and wiring.
   • If installing in a sheetrock ceiling, consider getting professional advice to ensure the ceiling can support the subwoofer.

Step 2: Understanding 70 Volt Technology

Before starting installation, it’s important to understand 70 Volt technology. This allows you to install multiple speakers in large areas, reducing the need for excessive amplification. Each speaker in a 70 Volt system is equipped with a transformer that pulls a fixed amount of wattage from the amplifier.

• Tapping refers to adjusting the amount of power sent to the subwoofer. The CC8 subwoofer has four taps:
  • 6.25 watts
  • 12.5 watts
  • 25 watts
  • 50 watts
  • 8 ohm mode (bypasses the transformer entirely for standard speaker use).

Select the appropriate tap for your system to ensure your amplifier can handle the total wattage of all connected speakers.

Step 3: Wiring the Subwoofer

1. Remove the Grill:
   • Gently pull off the magnetic grill to access the subwoofer's internals.
2. Choose the Tap Position:
   • Use a flathead screwdriver to adjust the tap on the subwoofer to the desired wattage setting (e.g., 50W for maximum bass output).
3. Wiring to the Subwoofer:
   • The Euroblock disconnect terminal on the back of the subwoofer is where you’ll connect your speaker wires.
   • Insert the positive wire into the positive terminal and the negative wire into the negative terminal.
   • Parallel wiring is used in 70 Volt systems, so continue running positive to positive and negative to negative to your next speaker.
4. Secure the Wire:
   • After wiring, slide the Euroblock terminal back into place, ensuring a secure connection.

Step 4: Installing the Mounting Bracket (Drop Ceiling)

1. Assemble the Mounting Bracket:
   • Align the bracket with the walls facing upwards.
   • Secure the bracket by attaching the long mounting pieces using screws, tightening them with a Philips screwdriver.
2. Prepare the Ceiling Tile:
   • Place the mounting bracket on the ceiling tile. Align it with the center and edges of the tile.
   • Use a marker to trace the inside of the mounting bracket.
3. Cut the Ceiling Tile:
   • Use a box cutter to cut along the outline, removing the center of the ceiling tile to create an opening for the subwoofer.
4. Install the Mounting Bracket:
   • Attach the mounting bracket to the ceiling tile, securing it in place. This bracket will hold most of the subwoofer’s weight.

Step 5: Securing the Subwoofer in Place

1. Activate the Dog Ears:
   • Pull out the dog ears on the subwoofer to secure it to the ceiling.
2. Attach the Subwoofer:
   • Flip the subwoofer and ceiling tile over, aligning the dog ears with the mounting holes.
   • Tighten the screws into the dog ears to secure the subwoofer firmly in place.
3. Safety Cable:
   • Important: Always run a safety cable from the subwoofer to a secure ceiling fixture, ensuring that the subwoofer remains safely suspended.

Step 6: Wiring to the 70 Volt Amplifier

1. Run the Speaker Wire:
   • Run the speaker wire from the subwoofer to the 70 Volt amplifier.
   • Ensure to use CL2-rated fire safety wire for ceiling or wall installations.
2. Wire the Terminals:
   • Loosen the Philips screws on the Euroblock terminal.
   • Insert the positive and negative wires into the corresponding terminals on the subwoofer.
3. Reconnect the Euroblock Terminal:
   • Once the wiring is secure, slide the Euroblock terminal back into place.

Step 7: Final Adjustments and Testing

1. Reattach the Grill:
   • Once everything is wired and secure, place the magnetic grill back on the subwoofer.
2. Testing:
   • Power on the 70 Volt amplifier and play audio to test the subwoofer.
   • Adjust the volume on the amplifier to ensure proper sound output.
3. Fine-Tuning:
   • Position the subwoofer for optimal bass response. You can experiment with placement, especially if you’re using it in a larger space.

Conclusion

The Rockville CC8 70 Volt In-Ceiling Subwoofer is an excellent solution for enhancing sound in large areas with the convenience of 70 Volt technology. By following the steps above, you can easily install this subwoofer in your ceiling, whether it’s a drop ceiling or sheetrock ceiling. Always ensure you have enough headroom, secure all wiring connections, and run safety cables for added security.