Be careful with the second battery thing as you just putting more strain on your stock alternator to keep up with powering two amps and then keeping two battery's charged as well.
I'm looking for a new system to save up for. Now I've heard some good things about Sundown and all so I was just curious of some things.
Like what can the subs safely handle because the RMS for the SA series is only 600 watts? But I always see people pushing those harder then that so I'm curious to what they can safely handle.