Super chunks traps are very effective in our studio. When it´s needed a great amount of low-frequency absorption in a room we have to put very efficient traps on corners. This usually occurs on smaller rooms.
Super chunks or Tri-corners
A third option it´s making low-frequency resonators, these traps absorb only a target of frequencies. Usually, they are tuned for the low bass octave as they are very effective. Fluffy fiber works better in this type of modules (20kg/m3). I use these traps in my studio.You can make them with MDF fiber-board or gypsum-board. Usually measures 60cm x 45cm. Sealing the perforated panel to the walls will perform better. This great calculator will help you for tuning your traps: Acoustic modeling.
“Blue Frog Audio made some corner traps for my room”