AcousticPanels.ca
USDYou’re in the United States store. Switch to Canada. Sign in Cart0

Learning center / Acoustics by building type / Home theater

Acoustic panels for home theaters: the complete guide

What makes home theaters noisy, which panels fix it, and how to plan treatment from start to finish.

2 minute read · Updated Nov 2026

Clear dialogue and tighter bass for a room built around the screen. Acoustic panels do that by absorbing sound energy that would otherwise bounce between hard surfaces. In home theaters the main sound sources are the speakers and subwoofers, and the most common complaints are that dialogue is muddy at reference volume, bass booms in some seats and disappears in others, and that sound leaks into bedrooms upstairs.

What is going wrong in the room

Every hard surface reflects sound. When a room has a lot of them, each sound keeps bouncing for a long time and overlaps the next one. That build-up is called reverberation, and it is measured as RT60: the time it takes a sound to fade by 60 decibels. A typical home theater of 20 × 14 ft with a 9 ft ceiling has a volume of about 2,520 ft³. With typical surfaces (drywall, a rug and some furniture), its echo time is about 1.06 seconds. The target for home theaters is 0.40 seconds.

What panels can and cannot do

  • Panels can shorten reverberation, remove flutter echo, make speech clearer and lower the overall noise level that builds up in the room.
  • Panels cannot stop sound passing through walls, floors or doors. That is soundproofing, which needs mass, airtightness and isolation. See soundproofing and STC for home theaters.

The recommended starting point

For a home theater like the one above, we suggest about 23 24 × 48 in rectangular panel, 4 in thicks, which brings the echo time down to about 0.40 s. That is roughly 30% of the wall area if the panels went on the walls. A good split for home theaters is about 85% on walls and 15% on the ceiling.

Open the designer with this setup loaded, or browse ready-made models on our home theater solutions page.

Plan it in five steps

  1. Measure the room and note what the floor, walls and ceiling are made of.
  2. Work out how many panels you need with the room calculator or the worked example for home theaters.
  3. Decide where they go, starting with the placement guide.
  4. Choose thickness, fabric and color to suit the room and its cleaning needs.
  5. Check the fire and code requirements before you order.

Guides for home theaters