What do I need?

[argenis69 10+ year member]

Hello Guys, I would like to know,

-How many more batteries next to the bass amp do I really need for my setup(as stated in my signature)?

-Is there anything else I need?

P.S.: I can't fit a bigger alternator because there's no space in the engine, I have installed the biggest one that I could find for my car.

Thank you.

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[Dozer68 10+ year member]

Depends on how loud you want to listen to your system but 2 more should do it

 

[argenis69 10+ year member]

Depends on how loud you want to listen to your system but 2 more should do it

So, your saying I need 3 batteries in the back and the one in the front?

 

[Dozer68 10+ year member]

Three total

 

[VWBobby 10+ year member]

Depends on your voltage drop at the amp. The only way to tell is to run your amp at full tilt and measure the voltage on the power leads. If the voltage is dipping below 12.5V - 13V, you need more reserve power (batteries, alt, or both). A lot of guys go overkill for lack of understanding of current draw and voltage. Voltage = potential. Amperage = flow.

You can calculate your current requirements from your amp's current draw.

EXAMPLE: Just because your amp can draw ~400A at full tilt does not mean you need a 400A alternator(s). The average current draw will be somewhere around 200A, except on test tones.

Personally, I would rather run 1 large alternator and 2- 3 batteries.

 

[argenis69 10+ year member]

Thanks, any other opinions?

 

[argenis69 10+ year member]

???

 

[neo_styles 10+ year member]

Are you looking for reserve power for what's in your sig? Just figure out how much current you need to support running regularly. My guess is the alternator will help to a certain extent, but you really should look at swapping out the lead-acid up front for an AGM as mixing battery types can be bad juju. But with that HO alt, I would think an AGM up front and the D3100 should be more than enough for your needs as long as you have properly done the Big 3.

 

[Timmy13091 10+ year member]

I'd do a agm upfront and 2 d3100's in back ... You should have no problems at all with a 200amp alt