Has anyone experienced odd bass reproduction in rooms with walls constructed with Gypsum Boards? The lower frq sounds muddled. Put the same speakers in brick walls or glass walls, muddleness disappears. Could it be that the Gypsum Board walls are flexing?
Dry wall definitely reacts with low frequency sound. Single sheet per side construction is also prone to reradiating. Filling the cavity with insulation doesn’t do much do dampen LF reradiating.
Thicker sheets of drywall help, closer spacing on the studs, heavier gage studs if they are metal, and duplicate layers of sheet rock all help immensely.
For a couple of projects I worked on Architects and Acousticians recommended 3 layers of gypsum screwed and glued with staggered seems. That was just for the inside of the rooms.
-Dave
Thicker sheets of drywall help, closer spacing on the studs, heavier gage studs if they are metal, and duplicate layers of sheet rock all help immensely.
For a couple of projects I worked on Architects and Acousticians recommended 3 layers of gypsum screwed and glued with staggered seems. That was just for the inside of the rooms.
-Dave
Thanks for your insight Dave. I thought my ears were playing tricks on me. I brought this up because many years ago, I did some installation work in board rooms of corporations and this was what I encountered. My friends thought I was "nutty".
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