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    H/O alts, how much power do I need?

    I'm looking to purchase an h/o alt, I will be using it to run
    Around 3200 watts rms at 2 ohms for the time being, give or take another 500rms
    For my four channel. My current preference is dc power .
    I am trying to determine wether I should get the 320 amp or cop out and go for the 250.
    How many amps of current do I need? I couldn't ever see myself going much over 5k rms @ 1
    I'm lost at the moment I just know an alt is the best investment I can make, I'm just not sure which to go with 250 / 180 at idle, 270 / 200 at idle, or 320 with 240 at idle, I'm not sure if I would even need more thAn the 250 amp model, could someone help me understand my choices



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    Re: H/O alts, how much power do I need?

    Depending on the price differences It would probably be best to just get the 320amp right off the bat, don't have to go back and upgrade later, or have that "I shoulda..." thought in the back of your head.

    Go big or go home, holmes.

    What size alt do you have now?



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    Re: H/O alts, how much power do I need?

    Quote Originally Posted by adjetta View Post
    I'm looking to purchase an h/o alt, I will be using it to run
    Around 3200 watts rms at 2 ohms for the time being, give or take another 500rms
    For my four channel. My current preference is dc power .
    I am trying to determine wether I should get the 320 amp or cop out and go for the 250.
    How many amps of current do I need? I couldn't ever see myself going much over 5k rms @ 1
    I'm lost at the moment I just know an alt is the best investment I can make, I'm just not sure which to go with 250 / 180 at idle, 270 / 200 at idle, or 320 with 240 at idle, I'm not sure if I would even need more thAn the 250 amp model, could someone help me understand my choices
    320 rom iraggi



    Head Unit Pioneer P99RS
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    Re: H/O alts, how much power do I need?

    Is there something wrong with your iraggi? Is this gonna be for a dual alt setup? Honestly I would just go for the biggest one you can get as stated you don't wanna have to upgrade later.



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    Re: H/O alts, how much power do I need?

    It is pretty simple math and you can figure it out on your own Watts=Volts x Amps. So in that equation you know two you just have to figure out the other. Volts range from 12.5-14.5 so I usually go a happy medium at 13.5(this is of course without putting in an external volt regulator). This should clear things up when you find the answer remember your amp efficiency if its 90% then you will need more than your calculation for arguments sake 10% more. Then you can make your own answer.
    You also have to take into account that unless you are doing tone tests then the alternator will not have to pull all of the juice all the time(thats what batteries are for, to handle the spikes), I would just stick the biggest one that will fit in there and call it a day no worrying about a new system not having enough power.




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    Re: H/O alts, how much power do I need?

    get the biggest one they make for ur car just incase..and get a external regulator and charge at 15.3..and dont look back




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    Re: H/O alts, how much power do I need?

    Quote Originally Posted by NASTY08IMPALA View Post
    get the biggest one they make for ur car just incase..and get a external regulator and charge at 15.3..and dont look back
    Why charge so high? Some batteries aren't warranted after 14.4 due to swelling



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    Re: H/O alts, how much power do I need?

    Quote Originally Posted by Wanacustomx View Post
    Why charge so high? Some batteries aren't warranted after 14.4 due to swelling
    alot of ppl do it around 15 volts hell my stock alt and dekas was around 14.9-15 sometimes..as long as it doesnt go hectic on ur electronics in ur car go for it

    ---------- Post added at 03:07 PM ---------- Previous post was at 03:07 PM ----------

    Quote Originally Posted by Wanacustomx View Post
    Why charge so high? Some batteries aren't warranted after 14.4 due to swelling
    alot of ppl do it around 15 volts hell my stock alt and dekas was around 14.9-15 sometimes..as long as it doesnt go hectic on ur electronics in ur car go for it




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    Re: H/O alts, how much power do I need?

    Quote Originally Posted by Austin175 View Post
    Is there something wrong with your iraggi? Is this gonna be for a dual alt setup? Honestly I would just go for the biggest one you can get as stated you don't wanna have to upgrade later.
    ?
    No. I have a 380 and am adding a 320 as soon as dom finishes.

    ---------- Post added at 02:17 PM ---------- Previous post was at 02:17 PM ----------

    Quote Originally Posted by Austin175 View Post
    Is there something wrong with your iraggi? Is this gonna be for a dual alt setup? Honestly I would just go for the biggest one you can get as stated you don't wanna have to upgrade later.
    ?
    No. I have a 380 and am adding a 320 as soon as dominick finishes.



    Head Unit Pioneer P99RS
    3 Runs of 1/0 OFC Power and 3 Runs of 1/0 OFC Ground
    1 XS Power D3400 & 2 XS Power XP3000 with Copper Bus Bars
    380 Amp & 320 Amp Iraggi Alternators(One is a chevy case, the other ford)
    RD 7500.1 running 2 12 inch SPLaudio (AA Mayhem motors/baskets)
    Tuned to 36 hertz. About 4.5 cubic feet, 8" Aeroport (made by dbeez)
    Zed Audio Leviathan III on Morel MDT-29, RS100-4 & RS225-8 Daytons
    Alex Jones www.infowars.com Endgame, Obama Deception, Truth Rising,
    Fluoride in the water, poison in vaccines, chemical trails in the skyglobal
    elite banks run our government towards a one world global government.

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