iamasif,
The upgrade package consists of a clarity or solen bypass cap on the tweeter input cap and uses a much more heavy duty Janzen or erse coil on the 2nd order woofer crossover along with a little better grade internal wire.Mine were a upgraded pair already when I bought them but I have also upgraded further which is a whole another story.
Best of luck to you,
Kenny.
The upgrade package consists of a clarity or solen bypass cap on the tweeter input cap and uses a much more heavy duty Janzen or erse coil on the 2nd order woofer crossover along with a little better grade internal wire.Mine were a upgraded pair already when I bought them but I have also upgraded further which is a whole another story.
Best of luck to you,
Kenny.