WH4: How To Install Onto Subwoofer

Introduction

The Rockville WH4 is a set of heavy-duty 3-inch caster wheels designed to make transporting subwoofers, PA speakers, monitors, and rack cases effortless. With a weight capacity of 350 pounds per set, these wheels allow musicians, DJs, and event professionals to move their gear with ease. The locking swivel design enhances maneuverability while ensuring stability when needed.

This guide will take you through the installation process step-by-step so you can set up your WH4 wheels quickly and efficiently.

What’s Included in the Box?

• 4 x 3-inch caster wheels (two fixed, two swivel with locks)
• 16 bolts (for securing the wheels)
• 16 washers (for added security)
• 16 T-nuts (for secure attachment inside the enclosure)
• Drill bit (for creating mounting holes)
• Wrench (for tightening the bolts)

Why Use Rockville WH4 Caster Wheels?

✔ Supports up to 350 lbs – Ideal for heavy subwoofers and PA gear.
✔ Swivel & Locking Mechanism – Two wheels swivel 360 degrees for easy movement, and two include locks to keep your gear stable.
✔ Fits Most Brands – Compatible with Rockville, JBL, Yamaha, Mackie, and other major subwoofer brands.
✔ Heavy-Duty & Durable – Designed to withstand gigging, transport, and frequent use.

Installation Guide

Step 1: Gather Your Tools

Before starting, make sure you have:
✔ Drill (compatible with the included drill bit)
✔ Hammer (for inserting T-nuts)
✔ Phillips screwdriver (if removing a speaker grille)
✔ Marker or knife (for marking hole positions)

Step 2: Mark and Drill Mounting Holes

1. Turn the subwoofer face-down on a flat, stable surface.
2. Measure and mark the hole positions for the wheels:
   • Place each wheel 1 inch from the edges of the sub’s back panel.
   • Use a marker or knife to create visible guide marks.
3. Drill four holes for each wheel using the included drill bit.
4. Repeat for all four wheels.

Step 3: Access the Interior & Insert T-Nuts

1. Remove the speaker grille and subwoofer driver (if necessary) to access the inside of the enclosure.
   • Rockville subs use Phillips screws for easy removal.
   • Disconnect the speaker terminals carefully before removing the driver.
2. Insert a T-nut into each drilled hole inside the enclosure.
3. Use a hammer to tap the T-nuts securely into place.

Step 4: Attach the Wheels

1. Place a small washer and a large washer onto each bolt.
2. Align a wheel with the pre-drilled holes.
3. Insert the bolts through the wheel’s mounting plate into the T-nuts.
4. Hand-tighten each bolt, then use the included wrench to secure them fully.
5. Repeat for all four wheels.

Step 5: Reassemble & Test

1. Reinstall the subwoofer driver and grille, ensuring all connections are secure.
2. Turn the subwoofer upright and test wheel movement:
   • Swivel wheels should rotate smoothly.
   • Locking wheels should engage properly when pressed down.
3. Test rolling your subwoofer to confirm smooth movement and stability.

How Rockville WH4 Wheels Improve Your Setup

✔ No more heavy lifting – Move your subwoofer effortlessly.
✔ Better gig mobility – Quickly transport gear from your vehicle to the stage.
✔ Perfect for DJs & musicians – Save time and effort during setup and teardown.
✔ Reliable & stable – Locking wheels prevent unwanted movement during performances.

Conclusion

The Rockville WH4 3-inch caster wheels are a game-changer for musicians, DJs, and audio professionals. Whether you're rolling into a gig, venue, or studio, these heavy-duty, easy-to-install wheels will save you time, effort, and back pain.

If you need a durable, reliable, and smooth-rolling wheel system for your subwoofer, PA speaker, or heavy equipment, the Rockville WH4 is the perfect solution.