JBL Control 24CT Micro 4" Two Way Ceiling Speaker with Transformer (Pa
Amazon.com: JBL Professional Control 24CT 4-Inch Background/ForegroundCeiling Speaker, Black, Sold as Pair : Electronics
JBL CONTROL 14C/T-BK - 4" CO-AX CEILING SPKR (2 PER CTN), BLK Two-Way 100 mm (4 in) Co-axial Ceiling Loudspeaker. 100 mm (4 in) high output driver with polypropylene cone and butyl
JBL CONTROL 24C 4" Coaxial Ceiling Speaker, No Transformer | Full Compass Systems