On Thu, 15 Jul 2010 03:54:05 GMT, mart wrote:

What would be more effective: Another layer of dryall and green glue or
acousti-seal on 1 side or filling the wall with cellulose? Studs are NOT
offset. Thanks


A lot depends on on the situation, the sound source etc.

Make sure all air to air leaks are corrected. Heating and cooling
ducts and returns can allow a lot of sound through. Double walls with
no connection from room to room works well.

In some situations the best solution may be to attend to the source.
The point is, someone with experience can do far more than all of us
here who can't see or hear the situation.