How To Build Corner Bass Traps

DIY Bass Trap Panels for Corners – Step-by-Step Build Guide

Looking to tighten up your low-end and reduce boomy bass in your studio, home theater, or podcast space? Bass traps are a must—and building them yourself is easier than you think.

In this guide, we’ll show you how to build two 48.5” x 24” x 3.5” bass trap panels that fit perfectly in the corners of your room.

CLICK HERE to get your free PDF plans.

🧰 Materials (for 2 traps)

• (3) 1x4” x 8ft boards (actual size: 0.75” x 3.5” x 8ft)
• (16) 1-5/8” wood screws
• (3) Rockwool or Hemp insulation batts (47” x 15.25” x 3.5”)
• (60) 1/4” staples
• (2) pieces of backing fabric (landscape fabric or old sheets work great)
• (4) L-brackets for mounting
• (2) yards of SoundAssured Acoustic Fabric

🪚 Tools Needed

• Staple gun (standard or pneumatic) 
• Drill
• Miter saw or hand saw
• Insulation saw
• Tape measure 
• Speed Square
• Pencil
• Safety gear: goggles, gloves, respirator mask
• Optional - table saw or router for 45 degree edging on long boards

🛠️ Step-by-Step Instructions

1. Build The Frame

•  Cut your wood into four 47” side pieces and four 24” end pieces.
• Sand all the edges and corners for a smooth finish.
• Drill pilot holes into the end pieces, then attach them to the sides with wood screws to form a rectangular frame.

2. Add Backing Fabric

• Cut the backing fabric slightly larger than the frame.
• Lay it flat and staple it to the back side of the frame. Do the ends first, then start from the center of side on each edge and work outward.

3. Cut The Insulation

• Cut one insulation batt in half lengthwise (7.625” x 47”).
• Place the insulation into the frame with the full-size and half-size pieces stacked side-by-side.

4. Wrap With Acoustic Fabric

• Lay your SoundAssured acoustical fabric (59x36”) on a clean surface.
• Flip the frame (stuffed with insulation) onto the fabric.
• Pull tightly and staple to the back. Do the ends first, then start from the center of side on each edge and work outward.

5. Mounting the Bass Trap

• Use L-brackets to mount the traps in your corners.
• Mark where the brackets will go and install drywall anchors if needed.
• Attach the trap to the brackets with screws.
• Use a level to check alignment and tighten everything down.

🔊 Why Use Bass Traps?

Bass traps help control low-end frequencies that build up in corners, giving you tighter, more accurate sound. These DIY panels are great for:

• Recording studios
• Control rooms
• Podcast setups
• Home theaters
• & More!

🎨 Customize Your Look

SoundAssured’s acoustic fabric comes in a variety of colors and is acoustically transparent, so your panels won’t lose performance. We can also cut custom fabric pieces to fit your project—just reach out to support at soundassured dot com for help.

Check out our DIY acoustic panel plans HERE!