mart wrote in newsan.2010.07.15.03.54.02.541000
@nowherexcv.net:

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


Sound-proofing requires more mass to absorb the sound energy so another
layer of acoust-seal is best as it is the heaviest material. Sound can also
leak around or through walls sort of like water so sealing gaps can help a
lot, too. Use an acoustical foaming product.