Question about amps and supplying power

[bmwking]

So I've begun the slow process of accumulating parts for my wall build. First and foremost is the electrical necessary for what i plan on doing and leaving a little headroom for any small future upgrades.

i have a 99 bmw 528 wagon, for reference.

I'm planning on running 2 ph-4000md amps, each to a pair of xfl 12s.

for highs i'll be running a ct sounds at200.4 (as soon as they start shipping that is)

I've been in touch with Singer since Michael has been the only person to respond to my inquiries. He has a range of hairpins that will fit my application.

My question is, if I purchase a 320amp alt from singer and have a factory agm battery, what more will i need if anything? I want to have stable 13+ volts at all times.

Any advice is highly appreciated!

[Bayuk89]

I would suggest adding (2) group 34 AGMS on to your electrical system. You would benefit from extra reserve.. most people that run a 300+ amp alt dont just have one battery.

[Bayuk89]

Measure your available space for extra batteries, find two that will fit in that space I.E. g31 g34 g27 g24 what ever fits in ur space. oriley AGM batteries are good from what i hear and arent too expensive

[bmwking]

I would suggest adding (2) group 34 AGMS on to your electrical system. You would benefit from extra reserve.. most people that run a 300+ amp alt dont just have one battery.

thank you for the input, its much appreciated. this will be my first bigger build and i dont want ot ruin anything. could i add say 6 xspower xp750s and be good?

[Bayuk89]

Waste of money doing 6 of those xp750 batteries when 2 group 34 batteries can offer you so much more reserve capacity and ampere hours

[Bayuk89]

If ur looking into XS power, i would say (2) d3400 batteries... if you wanna budget and be more cost effective, super start AGM, autocraft AGM duralast platinum AGM. any those in a group 34 would be just fine IMO.

[bmwking]

Waste of money doing 6 of those xp750 batteries when 2 group 34 batteries can offer you so much more reserve capacity and ampere hours

awesome, thats an answer i needed. thank you again!