• The ADSP processor and amplifier(s) drive your new front speakers along with the original factory rear speakers in unison.  Combined with an amp to give you just a little more power on the vocals of your favourite songs, the ADSP also allows you to shape and manipulate the overall sound based on the type of music most important to you.  The amplifier is hidden under a seat - nothing to see, nothing to become a target for thieves.
  
  
• The sound deadening helps reduce acoustic loss.  The door acts as a speaker enclosure, and as the door skin vibrates, the energy turned into sound gets lost as vibration instead.

• The slim sub fits under the front seats.  It produces the perfect amount of bass so that you definitely know it's there, but it's not going to set off car alarms or upset the neighbours.   Plus, like the amp it's invisible - nobody will smash your window to steal it.

Brands involved:

Key items in this system may include Alpine Status, Morel, Hertz, Helix, Zapco, Harmony, JL Audio, ESB, Sony ES, Rainbow, Audison, and Focal, among others.