Bumper’s “X” series speakers are widely used in car audio and as well as professional providing mid to low bass sound production in different frequencies. The “X” series is loaded with our new treated pulp cones, heavy duty double black thickness foam surround and poly/cotton spider allowing us to provide the precise coil alignment and critical come motion control. These speakers are built tuff and design to last. Design elements include a one-piece vented backplate piece, 0.400” thick top plate structure and 1” long winding high-performance Kapton/copper voice coils. They are available in 4 and 8 Ohm impedance.