4 Inches speaker paper cone, fit speaker voice coil up to 19.5mm/0.8″ (Coil Diameter), the depth is 23mm.
Single roll rubber surround. 90mm outside diameter and 74mm 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.
4″ speaker paper cone with rubber surround
Overall Diameter: 98mm(About 4 inches)
Voice Coil Diameter(Inner Diameter): 19.5mm(About 0.8 inches)
Depth: 23mm
Surround Outside Diameter: 90mm
Surround Inner Diameter: 74mm
Surround Width: 8mm
Cone Material: Paper
Surround Material: Rubber
Roll of the surround: 1
Package Content:
2 Pcs 4″ Paper Speaker Cone with Rubber Surround