Panel Trap side effect

What seldom is told: A panel trap can be a good and space saving low frequent absorber, but simultaniouly this absorption is at the expense of the insulation of the wall on which it is mounted (mass-spring), and on a drywall it will shift in frequency (depends on mass ratios) and creates a triple leaf system. Conclusion: A panel trap tuned to a specific frequency in order to increase insulation is counter productive and has the REVERSE effect as intended.

Dear Mr Desart I think this is a very important information for me and all other DIY-ers, because a lot of these panel absorbors are already builded, for DIY-ers this Panel is easier to build and relatively cheap!. So in order to continuesly taking the same risk as mentioned, Pls. Mr. desart or anyone can suggest us a way to SOLVE the Reverse Effect this type of panel made ? For some one who already build these kind of modules what can we do, shall we take them off the wall and treat them as a stand alone panel ? And which bass trap or menthod with less side effect ? Hopfully they can be DIYed ! Thanx ! PS. Mr. Desart should stay with this forum and give us more valuable infor.