House Speakers JBL L226C Ceiling Speakers - 2 Speakers Brand New Entertainment | eBay
JBL B-6IC 6.5" In-Ceiling Speaker Each. | eBay
Amazon.com: JBL Professional Control 26CT 6.5-Inch Ceiling Loudspeaker Transducer Assemblies, With Transformer Taps, Sold as Pair, White : Everything Else
Ceiling Speakers | JBL Professional Loudspeakers | English (US)