Alternator and Battery Question

[smoka 10+ year member]

See, this confuses me...
The alternator charges at a voltage of about 14.4V with x amps. (Theoretically)

In a case with my setup in which I have 4 runs of 4/0, where I can run some 350A about 20' with .32V drop, will it be pulling the current from the alternator as much as it can until it reaches down to the voltage of the D3100s, which are charged by the alt to 14.4? Will the load be distributed between the batts and the alt, or what?

This confuses me, I'm more of a digital person and RF analog, not generators.

Most of the load will be on the batts. The dynamics of music require quick demands for current which the alt is not fast enough to respond to. So the battery acts like a buffer for the fast changing current draw.

So say your batts are fully charged and your alt is running @ 50amps. Then you hit a loud bass note. Instantly the 50amps coming from the alt goes to the amp and the rest of the current is pulled from the batt. Pulling those amps from the batt will lower the voltage. After a few secs (not sure of timing specs) the alt will adjust itself to the new voltage and increase its output until the batt is full again.

If an alt could adjust its output extremely fast, we would only need batts for starting and not car audio.

But generators push power (you only get whats available) where batts power can be pulled (you get what you need).

Hope that helps. I'm sure there are some details that I missed.

 

[MakeshiftAudio 10+ year member]

Yeah, I did a little research and this was pretty close to what I concluded what was to be viewed as my answer, but it was a bit more technical behind the 3 phase ripple sensing post rectification part.

I concur. Thank you.

 

[ascitiesburn69 10+ year member]

Anyone know of any 4000wrms@ 14.4V amps that come with a remote GAIN(not bass) knob? I'm considering the AQ3500d but has anyone benched one at 14.4V because I'm thinking that its output is close to 4000 at 14 volts.

 

[ascitiesburn69 10+ year member]

Instead of D3100s I plan to get one either shuriken bt60 or kinetik 1400 for the front battery and 2 of either bt100/bt120s or kinetik 2000s. Will this be enough to supplement my 250amp mechman alt and a memphis 4kw, rockford t40001bd, or audioque 3500d??