Foroomaco 2 Pack Delta Bass Traps for Wall Corner 16.5"x15.8"x12" Super Chunk Bass Trap Soundproof for Home studio and Recording insulation Sound Proof Foam for Room Acoustic absorbing : Amazon.ca: Musical Instruments,
Constructing SuperChunk corner bass traps. | Home studio music, Studio build, Studio room
Comparison: Super chunk corner absorber vs. (2) 2' x 4' x 4" bass traps