scroll over this

[adio]

if i have a 110 amp alternator and i wanted to get an 2500-3000 watt amp, how big of an alternator would i need to get without putting an extra battery in the trunk?
also, would i need to upgrade the stock battery?

[hoss]

Depends on the amp bro, and the wiring.

But the short answer is this: Get as big of an alt as you can. can never go overkill, and for 99% of the time you are using said alternator, you will never get its maximum output.

[UCP]

Fuck car audio.

[97gp]

Like 4 300amp alts :fyi:

[UCP]

3000/12=x

[adio]

Depends on the amp bro, and the wiring.

But the short answer is this: Get as big of an alt as you can. can never go overkill, and for 99% of the time you are using said alternator, you will never get its maximum output.

all will be 0/1 awg wiring

[adio]

Fuck car audio.

fuck rainbow jimmies

[adio]

3000/12=x

250amp alt?

[UCP]

or better.

[adio]

if i have a 110 amp alternator and i wanted to get an 2500-3000 watt amp, how big of an alternator would i need to get without putting an extra battery in the trunk?
also, would i need to upgrade the stock battery?

or better.

what about this part?

[hoss]

Wouldn't hurt.

If it was me, I would start with the battery.

[dirtysouth31]

do big 3 and extra batt should be same size as front battery

[pl8er]

YouTube - Charlie The Unicorn

[SAD]

...and for 99% of the time you are using said alternator, you will never get its maximum output.

Could try Mean-Green... http://www.mean-green.com/ :thumbsup:

[ramos]

if i have a 110 amp alternator and i wanted to get an 2500-3000 watt amp, how big of an alternator would i need to get without putting an extra battery in the trunk?
also, would i need to upgrade the stock battery?

Let's do some math

I = P / E so current = power (in watts) divided by voltage( in volts)


so 3000/12= 250 amps


so that means at full tilt your looking at 250 amps of current draw from that one amp. Your going to need more than a high ouput alt. I would definately ditch the stock battery for an aftermarket agm battery. Unless you plan on running your car the entire time your system is on, you would be better off with an additional battery as well in the trunk.

Suppose you buy a 250 amp alt. That alt will only put out that 250 amps at 4-5k rpm ( depends on the alt setup) at idle you are looking at probably in the ball park of 75 amp or so if your lucky.

So lets go back to our math problem from earlier

250amp draw max. Let's use half of that draw for a realistic continuous current draw.

so 125 amps. With your alt pumping out around 75amp at idle. You would still be drawing 50amp from your battery....................check out the ratings on a battery for a constant 50 amp draw ;)

[ramos]

Could try Mean-Green... http://www.mean-green.com/ :thumbsup:

Very good alternators

[J31Bro]

Could try Mean-Green... http://www.mean-green.com/ :thumbsup:

Most of us originated @ car audio forums.. we knowz our altz broz.

[J31Bro]

Let's do some math

I = P / E so current = power (in watts) divided by voltage( in volts)


so 3000/12= 250 amps


so that means at full tilt your looking at 250 amps of current draw from that one amp. Your going to need more than a high ouput alt. I would definately ditch the stock battery for an aftermarket agm battery. Unless you plan on running your car the entire time your system is on, you would be better off with an additional battery as well in the trunk.

Suppose you buy a 250 amp alt. That alt will only put out that 250 amps at 4-5k rpm ( depends on the alt setup) at idle you are looking at probably in the ball park of 75 amp or so if your lucky.

So lets go back to our math problem from earlier

250amp draw max. Let's use half of that draw for a realistic continuous current draw.

so 125 amps. With your alt pumping out around 75amp at idle. You would still be drawing 50amp from your battery....................check out the ratings on a battery for a constant 50 amp draw ;)

I've seen some large cases deliver as much as 200@idle. IIRC they were XS Power. If not XS maybe DC? I can't remember. Its early.

[ramos]

I've seen some large cases deliver as much as 200@idle. IIRC they were XS Power. If not XS maybe DC? I can't remember. Its early.

You are correct, there are a few higher priced alts that will do monsterous power at idle. Still would get an extra battery or two for that monstrous alt to charge for reserve. An alt running full tilt constantly won't last long.

[SAD]

Most of us originated @ car audio forums.. we knowz our altz broz.

Perhaps "most" doesn't include the OP - or the question would not have been asked.

[J31Bro]

You are correct, there are a few higher priced alts that will do monsterous power at idle. Still would get an extra battery or two for that monstrous alt to charge for reserve. An alt running full tilt constantly won't last long.

I agree. I wasn't saying he didn't. All dem ampz from teh alt w/nowhere to hang out = bye bye alt.

Perhaps "most" doesn't include the OP - or the question would not have been asked.

That's the funny thing.. adio has been around FOREVER.

[J31Bro]

Plus, most of us would rather be castrated than return to some of the audio forums we originated from. Either that or we'd be stoned on site because of the damage we left behind.

lolcwutididthar?

[ramos]

Yup hate to see all that money wasted on a nice high output alternator, to have it die a squealing death so early in it's life :(

[97gp]

Perhaps "most" doesn't include the OP - or the question would not have been asked.

Hes just black

[adio]

I agree. I wasn't saying he didn't. All dem ampz from teh alt w/nowhere to hang out = bye bye alt.



That's the funny thing.. adio has been around FOREVER.

haahahah,
i started at soundomain, went to soundillusions, then to ED's forum, came over to CA.com and now i'm here....... with speacial appearences at midwest car audio, DIY audio, sound solutions audio and one other one:strokeface:

[adio]

hmmmmmmm...... so a 250 amp alt and a battery like this:

http://www.hifisoundconnection.com/Shop/Control/Product/fp/vpid/8755137/vpcsid/0/SFV/30046

http://www.optimabatteries.com/battery_selector/

http://www.kinetikaudio.com/2009/product.asp?P=KHC1800&C=1

[ramos]

IMHO I would do at least two hc batteries and the alt. I compete in SQ. I'm running around 4k rms. So I have to have the car run for at least 20 minutes at a time with ignition off. With an hour or so of recharge time between with multiple judges. With my current electrical setup it's no problem what so ever. You can crank the system to your hearts content for about an hour before the car starts showing signs of low voltage. I run a die hard platinum group 34 under the hood, and two platinum group 65's in the trunk, plus a 240amp alt.


loving me some die hard platinums. Couple companies sell this same battery with a different case for more money ;)

http://www.sears.com/shc/s/p_10153_12605_02850034000P?prdNo=7&blockNo=7&blockType=L7

[adio]

i'm def not gonna be running the car even at half volume without it turned all the way on. this is gonna be a daily driver. in fact, the only time i leave the music on and cut the car off is when i'm getting gas and that takes about 3 minutes at most. shit man, i don't even turn the voulume up half way i'm driving on the interstate at 65 -85mph!! my kenwood goes up to 34..... my normal volume is 6 - 11.
is the HO alt and 2 batteries overkill for me?

[UCP]

I have a D31T optima YT that I can probably sell you pretty cheap in a week or two as long as this other battery is good.

[adio]

I have a D31T optima YT that I can probably sell you pretty cheap in a week or two as long as this other battery is good.

na!! gota get an alt and do the big 3 1st

[ramos]

i'm def not gonna be running the car even at half volume without it turned all the way on. this is gonna be a daily driver. in fact, the only time i leave the music on and cut the car off is when i'm getting gas and that takes about 3 minutes at most. shit man, i don't even turn the voulume up half way i'm driving on the interstate at 65 -85mph!! my kenwood goes up to 34..... my normal volume is 6 - 11.
is the HO alt and 2 batteries overkill for me?

If this is the case, then I would just updgrade the under hood battery to start. Run your current alt until it's dead, then upgrade it.

[hoss]

Buy an irragi alt. Top notch customer service.

[UCP]

:hahaha:

[adio]

If this is the case, then I would just updgrade the under hood battery to start. Run your current alt until it's dead, then upgrade it.

that doesn't sound safe to do, especially if your out somewhere.........

[UCP]

That's what the extra batteries are for.

[J31Bro]

Buy an irragi alt. Top notch customer service.
lel. Excessive Amperage comes to mind as well.. but if you DO end up going Iraggi.. don't forget your TCAB.

[adio]

this is stupid!!

witf do i need a 3k watt amp?!?!?! you can't even tell an audible diff btween 2k and 3k watts. i'm getting ( hopefully) a ported 15 or a sealed or ported 18.

[tapout]

this is stupid!!



nDeed, most of your threads are.

[adio]

this is stupid!!
witf do i need a 3k watt amp?!?!?! you can't even tell an audible diff btween 2k and 3k watts. i'm getting ( hopefully) a ported 15 or a sealed or ported 18.

nDeed, most of your threads are.

so is your cunt

[icpurplepplalot]

That's not nice

[adio]

aw shit, i can't believe i said that

[adio]

is this a reputable company? anynbody know

http://www.qualitypowerauto.com/catalog.php

[icpurplepplalot]

Never heard of them, however if you're looking for a ho alt, I'd look into mean green, mechman, or get one off of summit.

[Spider Monkey]

Indoaudio bro. That's where its at.

[icpurplepplalot]

Just be sure you have an extra $20 to expedite your order directly from kicker.

[tommyk90]

If you want a good alt I'd suggest Mechman or DC power.

As stated, 2 new batteries would be a good start. I'd do that first and see how your voltage situation is. If you are still having problems, then it would be new alt time.

[icpurplepplalot]

If you want a good alt I'd suggest Mechman or DC power.

As stated, 2 new batteries would be a good start. I'd do that first and see how your voltage situation is. If you are still having problems, then it would be new alt time.

This

Depending on what amp and such you're running, you may not need a ho alt. I, for instance, ran an ia 20.1 at .5 ohms with a cheapo batt up front and a nsb 125 in the back with stock alt and never went below 13 volts full tilt.

[adio]

Indoaudio bro. That's where its at.

lolszzslol

[adio]

If you want a good alt I'd suggest Mechman or DC power.

As stated, 2 new batteries would be a good start. I'd do that first and see how your voltage situation is. If you are still having problems, then it would be new alt time.

just came from dc power.... $550 for new alt

besides dimming lights, how would i know somethings wrong?

[tapout]

just came from dc power.... $550 for new alt

besides dimming lights, how would i know somethings wrong?

when you are on the side of the road watching your car burn down.

[hoss]

when you are on the side of the road watching your car burn down.

This. I've caught things on fire due to low voltage.

[tommyk90]

when you are on the side of the road watching your car burn down.

This.

But seriously, just watch your voltage if you can and see what kind of dips you get during extended bass notes. mid-high 12's is ok at times, below that and you could start having problems.

[adio]

This

Depending on what amp and such you're running, you may not need a ho alt. I, for instance, ran an ia 20.1 at .5 ohms with a cheapo batt up front and a nsb 125 in the back with stock alt and never went below 13 volts full tilt.

seriuouslee, i don't need more than 2500 watts but 2000 minimum. i'd never run it at full tilt. i think the loudest i ever turned my shit up was to 22/34 and i was outside the car

[adio]

when you are on the side of the road watching your car burn down.

yeah, thats bad man

[UCP]

So bad.

[adio]

This.

But seriously, just watch your voltage if you can and see what kind of dips you get during extended bass notes. mid-high 12's is ok at times, below that and you could start having problems.

using what tool to measure

[tommyk90]

using what tool to measure

Get a voltage gauge and mount it in the dash somewhere.

But odds are with ~2000 watts and 2 nice batteries you shouldn't have any problems.

[ngsm13]

Could try Mean-Green... http://www.mean-green.com/ :thumbsup:

Yurpaderp. Mine is almost 6 years in...

[tommyk90]

Yurpaderp. Mine is almost 6 years in...

Had my excessive amperage for almost 6 years as well.

Though I think it might be on it's last leg. I had to take it apart last year before finals and tighten up the output stud.

I think it's time for a 270 amp Mechman. :)

[J31Bro]

is this a reputable company? anynbody know

http://www.qualitypowerauto.com/catalog.php

Redundancy. Sure won't get your question asked any quicker.. but it never hurts to annoy the fuck out of whoever you're talking to before they have a chance to answer you.

[ngsm13]

Had my excessive amperage for almost 6 years as well.

Though I think it might be on it's last leg. I had to take it apart last year before finals and tighten up the output stud.

I think it's time for a 270 amp Mechman. :)

I'm interested in DC Power big time... seem legit.

Mechman, I've heard good... but also seen bad first hand... multiple times.

[adio]

Redundancy. Sure won't get your question asked any quicker.. but it never hurts to annoy the fuck out of whoever you're talking to before they have a chance to answer you.

ru mad?:confused2:

[hoss]

but it never hurts to annoy the fuck out of whoever you're talking to.

Has always seemed to work for you.

[ramos]

that doesn't sound safe to do, especially if your out somewhere.........


A simple dmm can be a wonderful tool. With your car running, voltage should be over 13.4v. If it's below your alt is having problems. Upgrade the under the hood battery, fire everything up and check the voltage with the dmm.

[JimJ]

using what tool to measure

Feeler gauge and tweezers.

[adio]

Feeler gauge and tweezers.

stfu jimmie:king:

[adio]

ttt one last time

[fbi90909]

your 110 may hold just fine for a while but i would get a bigger battery bank in the trunk first instead of upgrading the alt. or get them both at the same time. the alt alone may or may not maintain 1 battery but if your car is efficient like mine and doesn't run the alt 24/7 then you will need to depend on stored power.. my civic kinda shuts the alt off when the extra juice isn't needed unless if i run the a/c or so which would then allow my voltage to stay above 14.#v.. if i don't use anything and just drive the car will maintain a 12.#v and kick the alt on every so often for short burst..
i currently have a 180a EA alt, kinetik 2400 in the trunk, a saz3000D, and 2 other amps for comps and tweets. though right now i need to replace my trunk batt as it's pretty damn old, but i can maintain my voltage pretty well..