Take a look at this:

[flakko 5,000+ posts]

For 1800W you don't need to uprate the alternator, becuase you could allow the battery to take the load and discharge, during high power scenarios. Its more important to focus on the batteries, than the alternator. Most people would never run their stereo beyond something like 200-300W, continiously.
I'd suggest a deep cycling battery, located as near as possible to the amplifier. But thats not so important becuase you can use thicker cabling. I am assuming you've gone beyond the point of preserving the full loadspace and have started to allow sub-bass boxes, etc to intrude into the boot. Are you planning on keeping the rear seats too?

//content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif

Click to read more...

 

[chinny 5,000+ posts]

he said uprate not upgrade hes a n00b

 

[94CamryBumpin 10+ year member]

hmm...how about no one listens to that guy ever again...

 

[flakko 5,000+ posts]

ummm i dunno bout that one lol im pushing quite a lot of wattage. and when the battery discharges, how am i gonna recharge it? a 55a alternator wont be able to handle the load i dont think.
and nope im just takin up the trunk space //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif i cant take out the seats cuz theres a gas tank in the way lol. im tryin to keep this car as stock as possible.

thats wat i wrote

 

[yamaman 10+ year member]

what a retard... I don't know all that much bout electrical but almost everyone knows a good alternator is what runs a big system or any system

 

[flakko 5,000+ posts]

It's not so important how big the alternator is. A 10A alternator could recharge your battery, it would just take longer. There's nothing special about stereos, its just another load on the alternator, so if you turn it down, then you will draw much less current and the alternator can provide enough current, over and above the loads on it at the time, to recharge the batteries.

his reply. bleh

 

[JimJ 5,000+ posts]

Technically, his reply is correct...most likely, he's in his late 40's and doesn't see the need for a stereo that draws that much current continuously //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[kuijo 10+ year member]

//content.invisioncic.com/y282845/emoticons/sick.gif.b1847c8dabbfeeddbcf1a78052249e10.gif Maybe you should correct him and be more assertive this time.

 

[flakko 5,000+ posts]

exactly, rite now my 55a alternator has a hard time keeping up with my power needs, with the car on. if i just get a bigger battery, there really wont be any difference. IMO a deep cycle battery is used only to play music or have your lights on when the car is turned off. and when the car is turned on, the alt recharges the battery.

thast wat i said

 

[flakko 5,000+ posts]

AAAA THESE GUYS ARE KILLING ME!!! I JUST ASK THEM IF I CAN DO THIS AND THAT AND THEY GIVE ME A LECTURE!!!!!!!!!

Flakko,
Can an old man give a much younger man a little advise?

If you plan to play the music so loud that you are at risk of flattening the battery with a standard alternator the only thing you can be assured of is hearing damage

I spent my time at Univ in the 70's listening to Punk too loud, and today I spend my life saying "pardon" cos I cant tell what people are saying, enjoy the MB but dont damage the hearing of yourself and your passnegers!

Mark.

Turn the stereo down, then!

GRRRR...

 

[MatthewR6 10+ year member]

AAAA THESE GUYS ARE KILLING ME!!! I JUST ASK THEM IF I CAN DO THIS AND THAT AND THEY GIVE ME A LECTURE!!!!!!!!!




GRRRR...

WHAT!?!?

 

[kuijo 10+ year member]

So hes like 50 something?

 

[flakko 5,000+ posts]

WHAT!?!?

exactly!!!

this is what im gonna respond:

exactly! thats why i need a higher output alternator.
I do not play my music loud all of the time. if you are worried about me disturbing others, i turn my music down at stoplights. My music is My music. I want the ability to GET loud when the time calls for it. I want to compete in SPL competitions, win some trophys.

so can you please tell me if what i want to do to my electrical system is possible?

 

[flakko 5,000+ posts]

I think Flakko is already affected, because he cannot hear mine and mlc's advice......

these guys are starting to piss me off.

 

[JimJ 5,000+ posts]

You can't win arguments like this. Trust me - you can't.

Arrogance over musical preferences, whether it's the style of music you like or the type of system you have, is so deeply ingrained into people like that that if anyone challenges their paradigm - especially someone much younger - you don't stand a chance //content.invisioncic.com/y282845/emoticons/uhoh.gif.c07307dd22ee7e63e22fc8e9c614d1fd.gif

Let it go.