These panels work fine, but are about twice the advertised weight.
Audiophiles want their music systems to sound especially good.  The acoustic properties of the listening room have an important role in the music fidelity that can be achieved with high quality audio gear.  Bare walls reflect a lot of the sound in a room.  Think of what  an unfurnished room sounds like when you talk in it.  Some of that undesired sound remains even after furniture is added.  The echo is not as pronounced.  But nearly bare walls, especially when parallel make parts of the music spectrum sound louder and other parts  sound quieter.  Panels such as this one make the angle of the reflected sound depend on its frequency.  And that reduces the tendency of reflections to put such peaks and dips in the spectrum of the music.<br /><br />  These panels are well constructed.  I installed two behind the listening position.  This required much thought  because they weigh 30 pounds each.  The hangers that came with them are entirely inadequate.  Using screws, I attached two strips of wood to the back of each panel.  The strips went to the floor to bear the panel weight.  The strips extended a few inches above the panel so I could put screws through to the wall.  I then attached the strips to my wall, using about 6 in each strip.  I am certain that the panels will not fall.<br /><br />  The only way to determine the effectiveness of the panels in my listening room is with test gear that I don't have.  'A-B' listening comparisons can't be done  days apart.  My listening room sounded good before and after I installed these panels.
Rating: 3 stars