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Reload Thread: How big of an alternator do I need?

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    angrytrucker78's Avatar
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    How big of an alternator do I need?

    So I'm gonna be running one Sundown 100.2 and one possibly two 1500D's.
    I have an Optima Red under the hood, big 3, and 1/0 to a Kinetik near the amps. I don't wanna buy something too big that I won't be able to see the full potential, but I also don't want something to small. It's goning in a 4.3 01 Blazer if that matters.

    Thanks for the help.
    Sean



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    Re: How big of an alternator do I need?

    Check out www.4alterstart.com

    I bought a 180A Alt for about $350. It was the best audio performance I did. I went through 2 DieHard batteries, 2 Optima (1 Red Top and 1 Yellow Top) hoping that the yellow top would help, but it lasted for just over 2 years. In fact, the batteries I bought lasted only 2 years, with the OEM alt. I spent approx. $450 on just batteries alone. You could have the best of everything, but if your power supply is not enough, be ready to spend some cash (in my case) every two years.

    My audio dipped to about 10.4 volts at times with the OEM 105A alt, but now, with this 180A alt. it did not dip below 12.3 volts at idle. It was a direct bolt on, no mods needed. I wish I had bought this alt earlier, before I spent the cash on the batteries. I knew that I needed to buy one, but I did what so many people did, try to fix the problem the easest way possible. IT DOES NOT WORK!!!!! As you can tell I spent approx $800, $400 went to Battery Heaven. I say to get a H.O. alternator along with the "BIG 3" first. Even with the modest aftermarket audio system an upgrade is a must, or else Battery Heven. The OEM alt. is ONLY made for your vehical's OEM products. The reserve output of the OEM alt. is not made for today's audio system.

    I hope this helps you out.



    Ride: 1998 Honda Accord EX Coupe
    HU: Alpine DVA-9681
    Epicenter (in dash)
    Aphex Processer by Kove Audio
    Capacitor: 1 Frad Rockford Fosgate (monitor top)
    Amp: MTX 405 (5-ch.)
    Front: Boston Acoustics Pro60
    Rear: Boston Acoustics SX95
    Sub: 1 (one) Eclipse SW8122DVC (12 in. sub)

    Added the "BIG 3"
    Load Boss Alternator (180 Amps)
    One HC1400 Kinetik Battery (using as main battery)

  3. #3
    AJ²06's Avatar
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    Re: How big of an alternator do I need?

    Quote Originally Posted by da12b View Post
    Check out www.4alterstart.com

    I bought a 180A Alt for about $350. It was the best audio performance I did. I went through 2 DieHard batteries, 2 Optima (1 Red Top and 1 Yellow Top) hoping that the yellow top would help, but it lasted for just over 2 years. In fact, the batteries I bought lasted only 2 years, with the OEM alt. I spent approx. $450 on just batteries alone. You could have the best of everything, but if your power supply is not enough, be ready to spend some cash (in my case) every two years.

    My audio dipped to about 10.4 volts at times with the OEM 105A alt, but now, with this 180A alt. it did not dip below 12.3 volts at idle. It was a direct bolt on, no mods needed. I wish I had bought this alt earlier, before I spent the cash on the batteries. I knew that I needed to buy one, but I did what so many people did, try to fix the problem the easest way possible. IT DOES NOT WORK!!!!! As you can tell I spent approx $800, $400 went to Battery Heaven. I say to get a H.O. alternator along with the "BIG 3" first. Even with the modest aftermarket audio system an upgrade is a must, or else Battery Heven. The OEM alt. is ONLY made for your vehical's OEM products. The reserve output of the OEM alt. is not made for today's audio system.

    I hope this helps you out.

    Ur joking right?



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    da12b's Avatar
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    Re: How big of an alternator do I need?

    Joking about what? This is all true, from my experience.



    Ride: 1998 Honda Accord EX Coupe
    HU: Alpine DVA-9681
    Epicenter (in dash)
    Aphex Processer by Kove Audio
    Capacitor: 1 Frad Rockford Fosgate (monitor top)
    Amp: MTX 405 (5-ch.)
    Front: Boston Acoustics Pro60
    Rear: Boston Acoustics SX95
    Sub: 1 (one) Eclipse SW8122DVC (12 in. sub)

    Added the "BIG 3"
    Load Boss Alternator (180 Amps)
    One HC1400 Kinetik Battery (using as main battery)

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    da12b's Avatar
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    Re: How big of an alternator do I need?

    Get the biggest H.O. alt you can find without making any mods. Get a direct bolt on. No headachs and less down time.

    Like I said, check out www.4alterstart.com



    Ride: 1998 Honda Accord EX Coupe
    HU: Alpine DVA-9681
    Epicenter (in dash)
    Aphex Processer by Kove Audio
    Capacitor: 1 Frad Rockford Fosgate (monitor top)
    Amp: MTX 405 (5-ch.)
    Front: Boston Acoustics Pro60
    Rear: Boston Acoustics SX95
    Sub: 1 (one) Eclipse SW8122DVC (12 in. sub)

    Added the "BIG 3"
    Load Boss Alternator (180 Amps)
    One HC1400 Kinetik Battery (using as main battery)

  6. #6
    ngsm13's Avatar
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    Re: How big of an alternator do I need?

    Just an

    Alterstart ***** ***. Bad.

    Do NOT get them.

    nG




    http://crunktimes.com/ct/
    nG - BSEE

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    da12b's Avatar
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    Re: How big of an alternator do I need?

    Why is that so? What alt would you get?



    Ride: 1998 Honda Accord EX Coupe
    HU: Alpine DVA-9681
    Epicenter (in dash)
    Aphex Processer by Kove Audio
    Capacitor: 1 Frad Rockford Fosgate (monitor top)
    Amp: MTX 405 (5-ch.)
    Front: Boston Acoustics Pro60
    Rear: Boston Acoustics SX95
    Sub: 1 (one) Eclipse SW8122DVC (12 in. sub)

    Added the "BIG 3"
    Load Boss Alternator (180 Amps)
    One HC1400 Kinetik Battery (using as main battery)

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    Re: How big of an alternator do I need?

    Quote Originally Posted by angrytrucker78 View Post
    So I'm gonna be running one Sundown 100.2 and one possibly two 1500D's.
    I have an Optima Red under the hood, big 3, and 1/0 to a Kinetik near the amps. I don't wanna buy something too big that I won't be able to see the full potential, but I also don't want something to small. It's goning in a 4.3 01 Blazer if that matters.

    Thanks for the help.
    Sean

    100.2 is going to be ~14a max draw
    each 1500d will be ~140a max so you aer looking at ~70a for both on a daily setup.

    You will need atleast 84a extra current bare minimum.


    You car is going to need about 60% of your current alternators amperage to run so whatever that is take the A and multiply it by .60 to see what the car needs. Then find one with an amount that will not overload it. Finally...an extra set of batterys will help out with the amperage demands. I dont see you keeping a good 14v charge however.

    I am a little drunk so someone please check my math.




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    ngsm13's Avatar
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    Re: How big of an alternator do I need?

    Only alternators I would consider:

    Mean-Green
    Iraggi
    H-O Alternators
    Ohio Generator

    nG




    http://crunktimes.com/ct/
    nG - BSEE

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    Re: How big of an alternator do I need?

    Quote Originally Posted by ngsm13 View Post
    Only alternators I would consider:

    Mean-Green
    Iraggi
    H-O Alternators
    Ohio Generator

    nG

    I highlighted the ones I would choose from first. Both Dom (Iraggi) and Nate (EA) have had issues in the past. My EA however is still running strong.




  11. #11
    johnecon2001's Avatar
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    Re: How big of an alternator do I need?

    Mean Green!

    Alterstart is crap. Stop copying and pasting your response in every thread asking about a freaking alternator.




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    Icon32 Re: How big of an alternator do I need?

    Alterstart deals with the "Load Boss" alternators. Is this brand junk? If not, explain why is the Company Alterstart crap. Did you have a bad experence with them or just heard it from someone's post? I want to know so I can tell my friends about it. I had put it in my car about 3 weeks ago (11/8/06) and it is Awsome (in my opinion).



    Ride: 1998 Honda Accord EX Coupe
    HU: Alpine DVA-9681
    Epicenter (in dash)
    Aphex Processer by Kove Audio
    Capacitor: 1 Frad Rockford Fosgate (monitor top)
    Amp: MTX 405 (5-ch.)
    Front: Boston Acoustics Pro60
    Rear: Boston Acoustics SX95
    Sub: 1 (one) Eclipse SW8122DVC (12 in. sub)

    Added the "BIG 3"
    Load Boss Alternator (180 Amps)
    One HC1400 Kinetik Battery (using as main battery)

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    Re: How big of an alternator do I need?

    how about you try and do some searching since all of us are telling one of you that they **** big balls.




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    audiolife's Avatar
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    Re: How big of an alternator do I need?

    Quote Originally Posted by da12b View Post
    Alterstart deals with the "Load Boss" alternators. Is this brand junk? If not, explain why is the Company Alterstart crap. Did you have a bad experence with them or just heard it from someone's post? I want to know so I can tell my friends about it. I had put it in my car about 3 weeks ago (11/8/06) and it is Awsome (in my opinion).
    the system in your sig shouldnt even need a high output alt......



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    Audison LRx 3.1 MT
    Hertz HSK 130
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    Re: How big of an alternator do I need?

    My system's output is about 1000 wrms. With the OEM 105A alt, I had light dimmage, and I have an Epicenter 160 which has an built-in SPL/Voltage meter.

    The lowest voltage I've seen it go down to is 10.3 volts, but it goes down once in a while. I was sending me battery to an early grave. So, as you see, I needed an H.O. alternator.



    Ride: 1998 Honda Accord EX Coupe
    HU: Alpine DVA-9681
    Epicenter (in dash)
    Aphex Processer by Kove Audio
    Capacitor: 1 Frad Rockford Fosgate (monitor top)
    Amp: MTX 405 (5-ch.)
    Front: Boston Acoustics Pro60
    Rear: Boston Acoustics SX95
    Sub: 1 (one) Eclipse SW8122DVC (12 in. sub)

    Added the "BIG 3"
    Load Boss Alternator (180 Amps)
    One HC1400 Kinetik Battery (using as main battery)

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