everything was working great! and then i blew the main fuse! i replaced it everything was fine after that but then out of nowhere i only have power in half of the power cable connected to the amp!! What can i do??
Not sure what power in half the power cable means. Are you saying (for example) you have a 6 foot power cable coming off the battery to the amp and only 3 feet has power and the other 3 feet doesn't? I would isolate the power wire from start to finish. I would bypass the power wire by running an external wire from the battery terminal to the amp. Basically, disconnect the old power wire from the battery (or source of power) and amp. Then run a temporary wire from the battery to the amp. If everything works then something is wrong with the original power wire.
I okorder /... Under the column for 90 degree cable in copper pick the wire gauge that is closest to your amp requirements without being under. For example: 1200 watt amp = 100 amps of power 2 gauge copper can handle 130 amps (This chart is missing 3 gauge which some places do carry, which can handle 110 amps) 4 gauge is only good for 95 amps. These ratings are about heat build up from inductance of the current. When the heat exceeds the rating, the sheathing melts and conductor degrades at it's weakest point. I recommend use of THHN electrical wire. It is gas and oil resistant and has heavy strands that hold up well to the stress of vehicle install situations. If your wire and fuses are properly sized, then check all of your connections. Often times heat and vibration will loosen screws on amplifier contacts. Also, under the hood, heat can melt your fuse holder causing plastic to coat the contact points (in which case you'll need a small file to clean the contacts) There's really a lot of possibilities here and your question is quite vague and convoluted. Please give more details or take some time and analyse the problem carefully. Chances are that you will discover the source of the problem in a matter of just 15 minutes or so of checking.
