Does soundproofing improve or harm sound?

Go to our resource page. Look in the column of acoustical articles. You will see the 10th one on Sound Isolation. I recommend you read this. It will give you some valuable insight I hope.

Doug came pretty close, but hat and resilient are two different and mutually exclusive products! Hat channel is just for furring, RC decouples the sheetrock from the framing. You want RC. Sound board is also a great product,just make sure to cover it with 5/8. 1/2 rock moves too much and absorbs Bass energy. Go to a REAL supplier to order door frames in any width you desire in 1/16 inch increments. Walking into the new room SHOULD feel completely different. You should NOT need any ugly treatment(s) With stiff, decoupled, insulated walls and lid. Z.

Zieman, thanks for the clarification! Resilient Channel sounds much more impressive for us audiophiles.