Here are some pictures of the stereo I installed in my truck. The only part of the whole stereo that wasn't built, installed or wired, by me is the enclosure. I had it made to custom specs. When it was completed and ready for subs, I installed 4 JL Audio 10W3's. All four subs are 4ohm, I wired them with the coils in series and the drivers in parallel. That way when they are wired together like I have them, (all into 1 channel!) they only create a 2ohm load on the amp. Each sub can handle 250 watts so I have a Rockford Fosgate BD1500.1 amp pushing them. The certification sheet that came with the amp shows the amp putting out 1655 watts!! So the total wattage of the stereo...The Alpine Deck, (40watts x 4 channels = 160watts) + The amp, (1655 watts) total all that up, and it's over 1815 watts of power
As you can see in the above photo, I ran 0 guage wire all the way from the battery to the amp! The 0 guage wire runs into a fuse block, where two 150 amp fuse are used. From the fuse block the power cable drops to a 4 guage wire into the amp. All speaker wire inside and outside the enclosure is 16 guage wire.