Power Source for Amp: Battery vs. Distribution Junction

[Kenny]

The battery is the best place for amp hook-up as previously posted, as well as using the shortest ground possible at the amp. It does sound like your alternator isn't keeping up with the demand of the amp and accessories. You can add some resistance to the "sense" wire and that will raise the charge voltage, which will alleviate some of the problem. Being so close to the limitations of the stock output, I'm not sure that is the best choice. Your local alternator rebuild shop can probably knock that dude up to 130+ amps and add a larger gold charging post for a very reasonable cost. Adding an adjustable internal regulator may be another option that is reasonable. The rebuild shops around here have always given me a better product than mass produced "box store" upgrade specials. Of course going big (over 140) would have me recommending Ohio Generator. As a side note, I have never seen any kind of reduction in battery life charged with a full 14.4v charge at the battery, but I have seen improvements in speaker/amp life at higher charge voltages.