Originally Posted by mrrrkva
Are you saying that without the backing AND the bass management they rattle? What is the bass management?
Without the backpanels they rattle, unless you limit the amount of bass being sent to the sub somehow. On my receiver it is "bass peak level". Doing that will make them not rattle but really gets rid of the LFE info heard. With the Acostico Term Backpanels (also sold at ceilume.com) on top of the tiles, you don't need to turn down the bass as much and you can achieve some decent LFE without rattling the tiles. Enough to rattle my ceramic sconces during the setup (not a movie yet) before any of the ceiling, which I will fix.
My 12" sub is turned up to the maximum 10+ decibels. now with -20 for the "Peak Bass Level". Before adding the back panels, I could go louder than 4.5 decibels with a Peak Bass Level around -40 before they began to rattle.
Edit: this was with test tones and I have turned up the sub just enough to vibrate the ceiling during the noise but I don't hear it during movies yet.
The bass doesn't hit me in the chest but I hear more of it now. Things in the background like a low whisp of wind or rumbling river currents. The chairs do vibrate slightly and I feel bass but it's not like I'm used to it.
The test was With heavy LFE scenes from Fellowship Of The Ring in DTS played at reference volume. I have not yet tested since we have gotten carpet on the floor as I have been to busy with my bedroom.