6.5″ Foam Speaker Enhancer, 4PCS Self Adhesive Car Door Speaker Foam Rings, Car Door Speaker Fast Rings, 6.5″ Speaker Baffle, Universal High Rebound Sponge Bass Blocker Kit for Stereo Audio Speaker

About this item Material: Speaker Foam Rings are Made of High Quality Foam Material, Memory Cotton, Soft, High Rebound, Heat Resistance, Waterproof, Durable, Pressure, Excellent Performance. Function: Car Speaker Foam Rings Can Shock Absorption, Prevent Sound Diffusion, Absorb the Door Echo, Improve the Speaker Sound Effect, Strengthen the Sound Effect, You will Enjoy High Quality 360-Degree Surround Music. Size: Speaker Fast Rings Outer Diameter : 193mm/7.6”, Inner Diameter 1 : 143mm/5.63”, Inner Diameter 2 : 116mm/4.57”, Inner Diameter 3 : 90mm/3.54”, Height : 23mm/0.91”, Great for 6” 6.5” 6.75” 7” Car Door Speaker. Easy to Install: The Back of the Car Door Speaker Foam Rings Adopts Up-Grade Self Adhesive, Strong Stickiness, No Easy Drop, Easy to Install. What You Get: The Kit Includes 4PCS Foam Speaker Enhancer Which Improve the Sound Quality for the 4 Car Doors, Each One Consists of 4 Parts, The First is a Gasket for Fixing the Speaker on the Surface of the Baffle. The Second and Third Ring Wrap Around the Edges at the Back of Speaker to Absorb Unwanted Reflections Created and Sound by Hard Surfaces. The Fourth Ring Surrounds the Outer Edge. By Using Multiple Rings, The Audio Projection to hte Cabin Can be Improved.