**Issues identified:** 1. "ووفر فرعي" is incomplete — missing the word "مكبر" (loudspeaker/speaker); should be "مكبر صوت فرعي" or "ووفر صوتي" 2. Missing "الحجم الكبيرة" or similar phrase to properly convey "large installation applications" 3. The structure doesn't clearly distinguish between the technology feature and the application scope