I was wondering, I drive a 69 volkswagen squareback which doesn't have the charging capacity of a newer vehicle (generator as opposed to an alternator). My cousin was telling me I could simply run the head unit and amplifier from a standalone battery and just charge it every once in a while when it runs out. I have the entire system wired up now to just one battery (a small one at that), however even with a full charge it runs out of power within like 5 minutes while powering my two MTX 12 inch subs. heres my setup so far (still have to add 6x9s and some tweets) sony xplod head unit bazooka 1500w single channel amp I was wondering maybe if I got a large deep cycle battery or something to that note if it would help out? Also, another weird thing I was having trouble with last night; I had my head unit running from the battery through a toggle switch (to save power when the car isn't in use) and my amplifier run to the same battery. At first I had the amp grounded to the negative battery post and I was getting a lot of weird noise coming out of my subs that i thought to be a ground loop. So then i moved the ground lead from my amplifier from the battery post to the car body itself. The speakers and amp worked fine. the next morning I came out and tried to ground the amp to the car body again. nothing. so i grounded it to the battery post once again and it started working beautifully with no noise whatsoever. Whats the best way to wire the amp? Also, my amp is a single channel, i was wondering if I could run both my 12 inch subs off of it, mono, and how i could do that.... any help is greatly appreciated.
to answer this question: from the subs..connect both positives together and plug to amp..same with the negatives. to answer the other questions..I really would not know since I'm not a "pro" when it comes to power sources like that.
Hey there, Well to be honest, even the best deep cycle will drain faster than you might like although it will last substantially longer than the battery you have now. What would be nice is if you could find an update kit to supply a newer style alternator to the car and possibly eliminate the second battery altogether, and save from the annoying re-charging! The amp, or any other component, should be fine when grounded to the frame, just make sure the metal is clean and free of paint and rust. I wouldn't recommend grounding to the battery, just because of potential for noise and if something happened to the battery, something could also happen to your amp. And yes the mono block amp will power them nicely, just do as the post above mentioned pair the positive and negative wires and tighten them to the terminals on the amp.
