caulking edges of frontwall

Hi, just a simple question. A frontwall with flush mounting speakers consist of minimal 3 parts. The 30° angled parts where the speakers are mounted in and the straight front. Mayba even more complicated when the sides are angeled to create a RFZ by reflection or when the speakers are angled vertically. Neverthelles its no a stright flat wall but more like a kind of prisma. If the frontwall consist not of massive concrete but serveral layers of gypsum, should the egdes caulk with some kind of silicon or acoustig sealing (elastic) or caulked with gypsum based caulking? Just wondering whats better a big hard wall, or several smaller walls with elastic edged? Was this understandable? Thanks Thomas