A resonance bump in a room's frequency response is called a room node. Bass traps substantial enough to control nodes have always been expensive to buy or intricate and time-consuming to build - not anymore.
The LENRD Bass Trap (Low-End Node Reduction Device) is extremely effective at smoothing out low frequency room nodes. Great for use in any room but are most effective in rooms smaller than approximately sixteen by sixteen feet.
LENRD Bass Traps (Orange) - 8 Pieces
Each Shipping Carton Contains Eight 12" x 12" x 17" Triangular, 24" Long Orange Pieces
Ninety (90) Day Warranty - Cosmetically Defective Products that are Uninstalled and As-New May Be Returned for Replacement of Like Products Within Ninety (90) Days of Purchase