Subwoofer Placement Calculator

Explore subwoofer placement, spacing, and summation behavior. Free subwoofer calculator for PA systems, studios, and listening rooms.

How the subwoofer placement calculator works

Room layout and subwoofer positions visualize summation and cancellation patterns, helping you find placements that reduce nulls and smooth low-frequency response at the listening position.

Key terms

  • Boundary gain - extra bass when a sub is near walls or corners.
  • Phase summation - in-phase sources add; out-of-phase create cancellations.
  • Crawl test - moving a sub while listening finds smoother in-room bass.

Frequently asked questions

  • What is the subwoofer crawl test? Move the sub while listening at the seat to find a position with smoother in-room bass.