Bybee BYBEE – PASSIVE ROOM NEUTRALIZERS  (PRN)

BYBEE – PASSIVE ROOM NEUTRALIZERS  (PRN)
The Bybee – Passive Room Neutralizer is a revolutionary product virtually eliminates surrounding walls in a listening environment. These are passive devices that are designed to be discreetly placed on walls behind pictures, wall ornaments, fixtures, furniture, etc. 

See the following description and set-up suggestions :

Room Neutralizers Write-up with diagram