Westa was-1308tc 16cm | 6 inch 3/6 watt transformer 100v suspended ceiling drywall speaker with transformer 16 cm | 6 inches suspended ceiling drywall speaker, 3/6 watt speaker power, 100v/70v impedance, 90 db pressure intensity, 17 cm hole diameter, 19.4 cm outer diameter, 7.1 cm depth westa ws-1308tc technical specifications product code ws-1308tc serial ws series type drywall / suspended ceiling speaker case type round closed | open type power 6 watts? 100v | 3 watts? Speaker with 70v transformer diameter 16 cm | 6-inch hole diameter 17 cm outer diameter 19.4 cm impedance 100v/70v pressure/sensitivity 90 db raw material plastic color white connection terminal depth 71 mm