Standard office type ceiling tiles are pretty reflective at mid frequencies, so they're not suitable for use at reflection points or above a drum set or other places you have overhead mics. Standard tiles don't absorb bass very well either because they're not thick enough.
Adding thick fluffy insulation above typical ceiling tiles definitely helps at bass frequencies which go right through the tiles. But again, those tiles are made for a dentist's office rather than a control room or recording space.
--Ethan
Thanks for the info Ethan. I have pretty much followed your advice from the beginning of this thread except for the insulation above the ceiling tiles.
I took apart the (12) 2' x 4' x 2" panels I made and doubled up the insulation (and purchased 6 more 4" pcs of OC703). Now I have (12) 2' x 4' x 4"
sound absorber panels - 6 on the "band side" of the room and 6 on the "listening side" of the room. This really helped to tighten up the room - my recordings
seem more focused when recording the band live (I use a Zoom H4N for recording band practices). I still feel like there's improvement to be
made though. I guess my concern is, by adding absorbsion to the ceiling, I will be "killing" the room (making it sonically dead) because the ceiling is
the only relective surface left. This is a basement space with carpet, heavy velour drapes, and (12) 4" panels. This room functions as a "live" room
for rehearsals and a tracking room for drums, guitars, etc.. The echo and reverberation are greatly reduced but the room is a little dull now. Will it get
even more "dull" with absorbsion on the ceiling? ( The room sounds like the video you made where you play the acoustic sitting right next to a bass trap.)
Thanks for all the great info!
