Large 3" diameter speaker cone is the perfect addition to any audio project where you need an 8 ohm impedance and 1W or less of power. We particularly like this cone as it has 4 handy mounting tabs 60mm apart, with solder connectors. Weight: 50.48g. Dimensions: 77.8mm x 77.8mm x 25.49 / 3.06" x 3.06" x 1".