RBG15FA: How To Set Up & Use

Introduction

The Rockville RBG15FA is a powerful 15-inch powered subwoofer, perfect for live performances, DJ events, band rehearsals, recording setups, and more. With built-in controls, multiple input options, and high-pass outputs, this subwoofer allows for easy integration into any sound system.

This guide will walk you through:
✅ Assembling and attaching wheels for transport
✅ Understanding the controls and connections
✅ Connecting the subwoofer to a mixer and speakers
✅ Optimizing sound settings for the best performance

What’s Included?

• RBG15FA 15-inch Powered Subwoofer
• Power Cable
• Optional Attachable Wheels (for easy transport)

Step 1: Attaching the Wheels (Optional for Easy Transport)

1. Use a ratchet or wrench to remove the bolts on the back of the subwoofer.
2. Align the wheel holes with the pre-drilled holes on the subwoofer.
3. Secure the wheels by screwing the bolts back in.
4. Place the sub on its back to roll it easily.
   • Two wheels swivel for better maneuverability.
5. When done transporting, return the subwoofer to its upright position.

Step 2: Understanding the Controls & Connections

1. Level Knob

• Controls the output volume of the subwoofer.

2. Phase Switch (0° or 180°)

• Adjusts the phase delay to better integrate the sub with your sound system.

3. LED Indicator Lights

• Power Light – Turns on when the subwoofer is powered.
• Protect Light – Indicates if the subwoofer has entered protect mode due to a malfunction.
• Signal Light – Shows when audio signal is detected.
• Limiter Light – Flashes when the built-in limiter activates to prevent distortion.

4. Input and Output Connections

• Combo XLR/¼” Inputs – Accepts XLR or ¼” connections from a mixer or audio source.
• XLR Thru Outputs – Sends full-range signal to additional speakers or subs.
• High-Pass Preamp XLR Outputs – Sends 120Hz and above frequencies to powered speakers or external preamps.

5. Built-in Crossover

• Adjusts low-end frequencies sent to the subwoofer and high-end frequencies to connected speakers.

Step 3: Connecting the Subwoofer to a Mixer & Speakers

1. Connecting a Mixer to the Subwoofer

1. Use two XLR cables.
2. Connect the female ends of the XLR cables to the left and right main outputs on the mixer.
3. Plug the male ends into the XLR inputs on the subwoofer.
   • You can also use ¼” inputs if your mixer has ¼” outputs.

2. Connecting the Subwoofer to Powered Speakers

• Use the High-Pass Preamp XLR Outputs to send 120Hz+ frequencies to your speakers.

1. Take two XLR cables.
2. Connect the female ends to the High-Pass Preamp Outputs on the subwoofer.
3. Plug the male ends into the XLR Line Inputs on your powered speakers.

3. Powering Up the System

1. Turn on the mixer first.
2. Turn on the subwoofer next.
3. Turn on the speakers last.
4. Adjust the Level Knob on the subwoofer.
5. Adjust Speaker Volume Knobs.
6. Set the mixer’s left and right main output levels.

Step 4: Adjusting Sound & Optimizing Performance

1. Checking High-Pass Output (Without Sub)

• Turn the Subwoofer Level Down to hear only the high-end frequencies coming from the speakers.
• This ensures that the high-pass output is working properly.

2. Increasing Subwoofer Volume

• Gradually increase the subwoofer volume until it fills the room with deep bass.

3. Using a Speaker Pole Mount

• The subwoofer includes leg inserts to allow a speaker to sit on top of it.
• A pole mount socket is also available for DJ and live performance setups.

4. Expanding Your Setup

• Use the XLR Thru Outputs to connect additional subwoofers or speakers for a bigger sound system.

Final Thoughts

The Rockville RBG15FA 15-inch Powered Subwoofer is an excellent addition to any PA system, offering deep, punchy bass and easy integration with mixers and speakers. Whether for live performances, DJ gigs, or studio setups, this sub delivers powerful low-end reinforcement.