Paper Speaker Cone Subwoofer From Uxcell With A 1 Point 7" Coil Diameter And 12 Inches speaker paper cone, fit speaker voice coil up to 44.5mm/1.7" (Coil Diameter), the depth is 70mm. 4 roll cloth surrounds. 280mm outside diameter and 240mm inner diameter of the surround. Made of high-grade paper. Strong enough to resist scratch and stretch, a sealed round edge would block the dirt and protect the coil. The cone(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 Paper cone has a smoother high-frequency roll-off, but the paper cone can absorb moisture from the air, changing its mass and damping characteristics. 12" speaker paper cone with 4 cloth surrounds Overall Diameter: 300mm(About 12 inches) Voice Coil Diameter(Inner Diameter): 44.5mm(About 1.7 inches) Depth: 70mm Surround Outside Diameter: 280mm Surround Inner Diameter: 240mm Cone Material: Paper Cone Color: Cone Surface: Surround Material: Cloth Roll of the surround: 4 Package Content: 1 Pcs 12" Paper Speaker Cone 1.7" Coil Surface with 4 Cloth Surround 12 Inches speaker paper cone, fit speaker voice coil up to 44.5mm/1.7" (Coil Diameter), the depth is 70mm. 4 roll cloth surrounds. 280mm outside diameter and 240mm inner diameter of the surround. Made of high-grade paper. Strong enough to resist scratch and stretch, a sealed round edge would block the dirt and protect the coil. The cone(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 paper cone has a smoother high-frequency roll-off, but the paper cone can absorb moisture from the air, changing its mass and damping characteristics.