【Dimension】- Outer Diameter: 245mm / 9.56" ; Inner Diameter: 35.5mm / 1.38"; Depth: 55mm/2.15"; Material: paper and rubber.
【High Quality Materials】- The Paper Speaker Cone Drum is made of high-grade paper. Strong enough to resist scratch and stretch, a sealed round edge would block the dirt and protect the coil.
【Function】- The speaker cones with rubber surround(Diaphragm) is a front part of the loudspeaker. When the coil moves forward and back, drives the cone like a drum skin vibrating to make sound and into the airs.
【Feature】- The drum paper has a smoother high-frequency roll-off, but the paper cone can absorb moisture from the air, changing its mass and damping characteristics.