Andrewdoan
I am a carpenter, general contractor and builder of all things great and small for my entire life.
A 10 year old house following the standard building codes would allow for 40 pounds per square foot of live load for your floor. Taking 1 room of 14 x 16 with a total of 224 square feet x 40 = 8,960 pounds equally distrubited throughout the room. A 300 pound refrigerator of 33" x 36 " = 36 pounds per square foot. These days lots of folks weigh in excess of 300 lbs. and occupy 1 square foot. I have never heard of someone falling through a floor or colapsing a floor. These loads a very conservative
You have absolutely no worries for your stereo or anything else in your home.
The crack is probably a drywall seam.
Enjoy your system and stop worrying.
I am a carpenter, general contractor and builder of all things great and small for my entire life.
A 10 year old house following the standard building codes would allow for 40 pounds per square foot of live load for your floor. Taking 1 room of 14 x 16 with a total of 224 square feet x 40 = 8,960 pounds equally distrubited throughout the room. A 300 pound refrigerator of 33" x 36 " = 36 pounds per square foot. These days lots of folks weigh in excess of 300 lbs. and occupy 1 square foot. I have never heard of someone falling through a floor or colapsing a floor. These loads a very conservative
You have absolutely no worries for your stereo or anything else in your home.
The crack is probably a drywall seam.
Enjoy your system and stop worrying.