Dynamat 10415 Xtreme Speaker Kit Car Amplifiers they are identical to the

they are identical to the original W7's

200 watts RMS x 4 bridged at 4 ohms

Efficiency (1 W / 1 m)** 82

5 kg *Frontal grille protrusion measured from mounting surface

Dynamat 10415 Xtreme Speaker Kit Car Amplifiers they are identical to theAbout the Dynamat 10415 Xtreme Speaker Kit A Dynamat Speaker Kit transforms the flimsy sheet metal in your car door into a solid, non resonant baffle. You'll enjoy improved mid bass performance with less distortion. High performance Dynamat Xtreme is a patented, lightweight elastomeric butyl and aluminum constrained layer vibrational damper. It's lighter than Dynamat Original, requires no heat to apply, and is coated with aluminum for high temperature