Ceiling Speakers Extron Ceiling Speakers are designed for overhead audio applications for music and voice in small and large classrooms, conference rooms, and boardrooms. Each speaker has been designed to meet the needs of specific application requirements. Plenum-rated speakers with back cans are available for installation in plenum ceilings. On this page: SF Series CS Series Ceiling Speaker Accessories SF Series NewSF 10C SUB SoundField In-Ceiling Subwoofer SF 26CT SoundField XD 6.5" Two-Way Ceiling Speaker with 8" Composite Back Can and 70/100 V Transformer SF 3C LP SoundField XD 3" Full-Range 8 Ohm Ceiling Speakers with 4" Low Profile Composite Back Can SF 26X Two-Way SoundField Open Back 8 Ohm Ceiling Speakers SF 3CT LP SoundField XD 3" Full-Range Ceiling Speakers with 4" Low Profile Composite Back Can and 70/100 V Transformer CS Series CS 123T Full-Range 70/100 V SpeedMount Ceiling Speaker System CS 3T Full-Range Open Back Ceiling Speakers with 70/100 V Transformer CS 1226T Plus Two-Way 70/100 V SpeedMount Ceiling Speaker System CS 26T Plus Two-Way Open Back Ceiling Speakers with 70/100 V Transformer CS 120P Plenum Rated Ceiling Tile Enclosure for CS 3T and CS 26T Plus Speakers Ceiling Speaker Accessories CS 120P Plenum Rated Ceiling Tile Enclosure for CS 3T and CS 26T Plus Speakers SGK SF3C Square Grille Kit for SF 3C LP and SF 3CT LP Speakers Ceiling Mount Kit C-Ring and V-Rail Kits SGK SF26C Square Grille Kit for SF 26CT Speaker