Many Christians asked if it matters to God whether we raise our voice in worship or remain silent. The church is often deaf to what God is saying and what the church is singing. Being silent has its timing. There is a time for everything. If volume does not matter to God then He wouldn't have given us volume.
Volume communicates volumes.
Volume stamps authority. When you exert authority over somebody, volume counts. When you cast out demons, volume counts. Volume indicates firmness. When you want something done.