RBG12S: How To Set Up & Use

Introduction

The Rockville RBG12S is a 12-inch powered subwoofer designed to enhance live performances, DJ events, band rehearsals, and more by delivering deep and powerful bass. It can be used individually or as part of a larger sound system with powered speakers, mixers, and additional subwoofers.

This guide will walk you through:

• Understanding the subwoofer’s controls and features
• Connecting it to a powered speaker
• Setting up a larger system with multiple speakers and subwoofers

Step 1: What’s Included

• RBG12S 12-Inch Powered Subwoofer
• Power Cable
• Handles for easy transport
• 35mm Pole Socket (for mounting a speaker above the subwoofer)

Step 2: Understanding the Controls

Front Panel Features

• Volume Knob – Adjusts the subwoofer’s output level.
• Power Light – Indicates when the subwoofer is powered on.
• Clip Light – Lights up when the sub reaches peak volume or distortion levels.
• Low Pass Filter Knob – Adjusts the frequency cutoff:
  • Example: Setting it at 100Hz means the subwoofer will only play frequencies below 100Hz.
  • Adjust this to match your speakers and room acoustics.
• Polarity Switch – Reverses the polarity to better sync with your speakers, depending on placement.

Inputs & Outputs

• Combo XLR/¼” Input – Accepts both XLR and ¼-inch (TRS) cables for versatile connections.
• XLR Output – Sends the subwoofer’s signal to an additional sub or speaker.
• RCA Input – Connects to audio devices with RCA outputs.

Step 3: Connecting to a Powered Speaker

For a basic setup with a powered speaker:

1. Mount the speaker above the sub using a 35mm pole (like the Rockville RSP36).
2. Connect an XLR cable:
   • Female end → XLR Output on the subwoofer.
   • Male end → XLR Input on the powered speaker.
3. Turn on the subwoofer first, then turn on the speaker.
4. Raise the subwoofer’s volume knob to your desired level.
5. Increase the speaker’s volume knob.
6. Play audio from your device (e.g., a phone connected via Bluetooth to the speaker).

Sound Check

• Listen for balance: The subwoofer should enhance the bass without overpowering the speaker.
• Adjust the low pass filter for the best sound (start at 100Hz and tweak as needed).

Step 4: Setting Up a Larger System

For a bigger setup with multiple speakers and subwoofers:

Equipment Needed

• Passive Mixer
• Two Powered Speakers
• Two RBG12S Subwoofers
• Four XLR Cables

Step 4.1: Connecting the Mixer to the Speakers

1. Use (2) XLR cables:
   • Female ends → Left and Right XLR Main Outputs on the mixer.
   • Male ends → XLR Inputs on both powered speakers.

Step 4.2: Connecting the Speakers to the Subwoofers

1. Use (2) more XLR cables:
   • Female ends → XLR Outputs on the speakers.
   • Male ends → XLR Inputs on the subwoofers.

Step 4.3: Powering Everything On

1. Turn on the mixer.
2. Turn on the subwoofers.
3. Turn on the powered speakers.

Step 4.4: Adjusting Volume Levels

1. Raise the volume knobs on both speakers.
2. Increase the subwoofer volume knobs.
3. Raise the main left and right faders on the mixer.
4. Adjust the channel volume faders for music playback.

Step 5: Testing the System

• Play music through your setup.
• Ensure clear bass without distortion.
• Adjust the low pass filter and polarity switch as needed.
• If using two subwoofers, ensure they are balanced and not overpowering the mids/highs.

Conclusion

The Rockville RBG12S 12-inch powered subwoofer is easy to set up and highly versatile, whether you’re using a single speaker or a full PA system. With its customizable sound settings, multiple input/output options, and expandability, it’s a powerful addition to any live sound setup.