ARCHITECTURAL LOUDSPEAKERS PREMIUM SOUND TO EVERY ROOM HGMS CONESHybrid Polypropylene + Hollow Glass Microspheres IN-CEILING L SERIES SIG L8 Woofer: 5” PP+HGMSMidrange: 2 x 3” Cones PP+HGMSTweeter: 1” Titanium Black SIG L5i Woofer: 6” PP+HGMSTweeter: 1” Titanium Black Pivoting SIG L4i Woofer: 6” PP+HGMSTweeter: 1” Black Silk IN-CEILING Q SERIES SIG Q8 Woofer: 8” PP+HGMSTweeter: 1” Titanium Black Pivoting IN-CEILING R SERIES SIG R5i Woofer: 6½” PP+HGMSTweeter: 1” Titanium Black Pivoting SIG R4i Woofer: 6½” PP+HGMSTweeter: 1” Black Silk IN-CEILING W SERIES SIG W8Xi Woofer: 8” PP+HGMSMatching Crossover SIG W8D Woofer: 8” PP+HGMSMatching Crossover