JBL STAGE 260C 6.5" In-Ceiling Loudspeaker

1" (25mm) Aluminum dome with Acoustic Lens with Wave Guide, 6.5" (165mm) 
Polycellulose cone woofer,Aerodynamic bridge Reduces resonances, Recommended Amplifier Power 20-100W RMS, 
Frequency Response 50Hz-25kHz, Sensitivity 87dB, Nominal Impedance 8 ohm, Nickel-plated spring-loaded connectors, Grille 
Dimensions Dia 9.4in (239mm), Cutout Dimensions Dia 8in (203mm) , Mounting Depth 4in (101mm), Weight (Kg) 1.9Kg