Hi, im new to this forum.Nedd a bit of help...

I have an astra with stereo CDR 500. I want to add an active sub to it. what will i need? - some are saying i need a 'line converter' to give low level input to amp?

Also, how do i route the power cable from the battery to boot, any diagrams, pictures, links would be very much appreciated.

KAY-P