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upgrading power

Discussion in 'Car Audio / Security / Electronic Accessories' started by K2e2vin, Aug 7, 2005.

Which would be a better upgrade for someone pushing about 800W?

  1. Upgrade the Alternator

    100.0%
  2. Install a 2nd Batt

    0 vote(s)
    0.0%
  1. K2e2vin

    K2e2vin Senior Member

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    This is for my neighbor; but hes having problems with the power supply keeping up with his system(2 Memphis 12s with about 800W). just wondering what would be a better route.
     
  2. jimboburgess

    jimboburgess Go fast, Go Cheap

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    new/better alternator will allow you to refuel your battery better. a second battery will allow you to play your stereo longer while the car isn't running. What you need is a good capacitor, installed correctly. this will store energy from the battery and release it when the speakers need it, like loud low bass hits.
     
  3. dem134

    dem134 Member

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    add a second battery and use the largest gauge wire that the amp will let you.
     
  4. crxdxb16a

    crxdxb16a Member

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    A second battery wouldn't do a lot once its drained down if the alternator wasnt keeping up.

    I would say that unless you plan to use the subs for short periods of time, an alternator and capacitor would be more benifcial
     
  5. drpenguin

    drpenguin Senior Member

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    yeah get a cap and new alt. get a 80ohm one. least i think thats what it is. anyways just get one for two batteries and you should be good. If you really want to throw two batteries in you can its just more weight.
     
  6. macadoshes1

    macadoshes1 Junior Member

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    Second battery and a isolator and once and a while turn the volume down so the battiries can charge.
     
  7. MXDesa

    MXDesa Senior Member

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    That defeats the purpose if you still have to be concious of the charging system. Get a second alternator like a limo has and you should be fine without a Capacitor or second battery. Its shouldn't be that hard to locate either a kit or someone that can fab something up to make it work.
     
  8. jimboburgess

    jimboburgess Go fast, Go Cheap

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    A GOOD CAP WILL PREVENT THE AMP FROM DRAWING POWER DIRECTLY FROM THE BATTERY WHICH IS THE PROBLEM YOU'RE HAVING. your headlights will still dim on bass hits with a second battery/alternator, Sorry about yelling.
     
  9. TommyTheCat

    TommyTheCat Gonzo Scientist

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    [Stormy]Shut up...[/Stormy]

    An alternator supplies power directly when it is on, so you're mode of thinking is wrong. If you beef up the alt, you have enough power being supplied to the amps.

    And I won't yell when i say this: Caps are for filtering. It does smooth out the voltage of the cars electrical system. It doesn't supply enough juice to compensate for bass passages requiring large amounts of current. Just because your headlights stop dimming doesn't mean you're supplying your amp with the needed current.

    Try going through bcae1.com . You'll hopefully learn a lot.
     
  10. jimboburgess

    jimboburgess Go fast, Go Cheap

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  11. neonmike

    neonmike Senior Member VIP

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    do what he said
     
  12. wanderinman

    wanderinman Senior Member

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    If you want to turn your volume down to charge the batteries, then install a second battery and be a tard. Your not addressing the problem with a second battery, your just delaying it.

    Everyone who voted for the capacitor gets fifty points. A capacitor is a battery in a very basic sense, it stores power in a circuit and discharges when the power is low. Unless your doing bass tests your subs are only going to hit intermittently (fuck spelling), it only takes a fraction of a second for a capacitor to charge, so it will address the problem the most cheaply. If you want a long term solution you can install a second alternator, but for only a 800W system its definitely not needed. Go get a 1.0 Farad capacitor from a reputable brand, wire that shit in and dont worry about it anymore.

    capacitors = good
    extra batteries = dumb
    extra alternator = eh, combination of good and dumb


    Edit due to alcohol: Think of it this way, a capacitor is going to do the same thing as turning down your volume. When your drawing peak power (which seems to drain your shit) the capacitor is going to cover the difference. When your not using peak power (which is a lot of the time) your battery will charge.
     
  13. neonmike

    neonmike Senior Member VIP

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    after a deep bass note the cap discharges in milliseconds and as soon as that happens it becomes a load on the system if the volume is kept up. how does that help your electrical sytem woes. a capacator is absolutly useless unless your doin short burps at say a competition. buy a second battery and call it a day!
     
  14. TommyTheCat

    TommyTheCat Gonzo Scientist

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    Caps haven't proved themselves to net more SPL. Not many competetors use caps (unless they're sponsored by cap companies, most don't bother).

    If you've gotten this far I hope you'll read this too: bcae1.com. It has been recommended here before and explains many aspects of audio. Section 46 is on capacitors (just scroll on the right side). I'll give you a small quote:
    "When using very large capacitors (1/2 farad or more) in your car, the capacitor partially discharges into the amplifier's power supply when the voltage from the alternator or battery starts to fall. The capacitor can not act like a battery. It only serves to fill in what would otherwise be very small dips in the supply voltage."
     
  15. hcivic.com

    hcivic.com Senior Member

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    look at getting an ho altinator, and get a better battery like the optima deep cycle.
     
  16. wanderinman

    wanderinman Senior Member

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    deep cycle batteries are the shit, you can drain them to dead and recharge them to full more times than you'll wake up with wood in the morning. I used to use them back in my four wheeling days, and I know for damn sure 4 lights, bright headlights, and a winch are eating more power than your amp. Check them out.

    :bash: to me for forgetting about them
     
  17. 92CHB

    92CHB Senior Member

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    For my stereo in my bonneville i have upgraded the "big 3", put a H.O. alternator, have a optima deep cycle, and a capacitor. This all powers my ported rockford HX2's from a DEI 1100D, I do not have any dimming problems or power loss other than drawn out sub 40 hz frequencies. Best thing i would do is the upgraded alternator for now, along with a yellow top optima and upgrade the "big 3". That will help a lot! Hope this helps i have done many stereo installation's from little to too big.
     
  18. hcivic.com

    hcivic.com Senior Member

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    hell ya a whinch will kill a batt in under a min. Hell i have 3 batteries in my wheeling truck all deep cycle gel batts, and my whinch will kill them in 1 good pull with a dead truck
     
  19. cheese9988

    cheese9988 Senior Member VIP

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    I'm with him. Caps won't do shit if you can't get enough power. What do you think charges the cap, and the battery, the ALTERNATOR. When you get a dip in power the cap will supply energy the quickest, then the battery, but ultimitaly the power comes from the alternator. A cap like he said is basically a filter, it tries to keep voltage in the car constant, might stop it from jumping from 11.0 to 13.0 volts to 11.5 to 12.0volts for example. Open up the charger for your cordless phone, has the same thing in there, just on a smaller scale.

    Read
     
  20. K2e2vin

    K2e2vin Senior Member

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    alright i talked to him and told him to get a new HO alternator. he said he will after he gets his car fixed(the car is messed up right now...its a Ford. their ford f150 is also having problems... lol.) thanks guys.
     
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