Quote:
Originally Posted by ejsongs  thanks for the advice.
have done most of what you have suggested.
with the r30 insulation i have in the ceiling...it has a paper backing so when it put it up in the ceiling i left the paper backing on an let the paper backed side facing the floor as it was easier to install that way.
is this ok?
there is about a 4" to 6" in air gap between the insulation and the real ceiling. is this ok as well? if i removed one layer i could have maybe a 16" air gap or i could add one more layer toget more material up there.
any thoughts? |
I don't see anything wrong with any of that. Looks fine to me. You've got plenty of airspace at 6" I think.
Are you detecting a null or a peak? Could it be the front wall null? Take the speed of sound (1130ft/sec) and divide it by four, then take that quotient and divide it by the distance between the speakers and the wall. If that's 150 or close to 150, it could be your answer.
Frank