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Bass EQ

Many movie soundtracks are deliberately high-pass filtered during mastering, removing low bass that the mix originally had. Bass EQ (BEQ) restores that missing bass using pre-made filters drawn from a community-maintained catalogue of film and TV titles — the BEQ Catalogue. Background on the technique is available in the AVS Forum thread Bass EQ for Filtered Movies.

Note

Bass EQ is unavailable when PEQ is set to post-Dirac Live placement. An alert reads "BEQ is locked because PEQ is set to post. Switch PEQ to pre to restore access." See PEQ Placement.

Finding a Filter

Search the catalogue using the fields at the top of the page:

  • Title — free-text search.
  • Content Type — Movies or TV Shows.
  • Year
  • Source — the streaming service, disc, or other release the filter was measured from.
  • Language

Results appear in a scrollable, paged list. Select a title to see its details — overview, genres, rating, runtime, and cover art — on the right.

Bass EQ page with the search fields, results list, and a selected title's detail panel

Applying a Filter

Select a title, then click Apply on its result row. The filter's bands are written into your subwoofer channels' PEQ, and PEQ is turned on if it wasn't already.

The Active BEQ Filter panel at the top of the page always shows what is currently applied. Click its name to jump back to that title's details, or click Clear to remove the filter and restore your subwoofer PEQ to its previous state.

Applying a new filter automatically clears whichever one was active before it.