+ Reply to Thread
Page 3 of 3 FirstFirst 1 2 3
Results 31 to 39 of 39

Reload Thread: What size alternator do I need?

  1. #31
    Based's Avatar
    Based is offline Senior VIP Member



    Join Date
    Mar 2014
    Location
    Louisiana
    Posts
    473
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    217 Post(s)

    Re: What size alternator do I need?

    Quote Originally Posted by rujoesmith View Post
    its for when you need just a bit more volume than anyone else
    https://www.youtube.com/watch?v=4xgx4k83zzc
    Yeah I've seen the movie lmao.







  2. #32
    sharkman's Avatar
    sharkman is offline poor bass head



    Join Date
    May 2014
    Location
    oakland ca
    Posts
    144
    Post Thanks / Like
    Images
    2
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    28 Post(s)

    Re: What size alternator do I need?

    Dang i hope i dont run into this problem. I have a 90 bronco which has 80 amp alt. But im running 2x power to the re sx18 off a mb quart 1600 plus a 400 watt amp for my 6.5s. I havent put the bass amp in not knowing if i should at least upgrade my alt to athe 130 g3 alt first




  3. #33
    yogegoy's Avatar
    yogegoy is online now Senior VIP Member



    Join Date
    Dec 2013
    Location
    San Jose, Ca.
    Posts
    265
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    83 Post(s)

    Re: What size alternator do I need?

    Quote Originally Posted by mylows10 View Post
    Gain is not a bass knob or volume knob
    Totally agree with you on this!




  4. #34
    NoLoud4U's Avatar
    NoLoud4U is online now High Output SQ



    Join Date
    Apr 2011
    Location
    Va Beach, Va
    Age
    34
    Posts
    8,644
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    2807 Post(s)

    Re: What size alternator do I need?

    So OP where is the gain on the amp set? Also what head unit do you have?



    2014 Ford Fusion
    All stock everything.

  5. #35
    av83's Avatar
    av83 is offline CarAudio.com Veteran



    Join Date
    Mar 2012
    Location
    Illinois
    Posts
    2,871
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    1254 Post(s)

    Re: What size alternator do I need?

    Quote Originally Posted by Based View Post
    the amp pulls 80a so...

    75a alt. around 40% of that is going towards your normal car stuff, so we are left with 60% of 75. 0.6 times 75 is 45a. 80a minus 45a is 35a. After 45a, it's up to your battery to pick up the extra 35a. If your battery is stock then it is probably pulling between 35ah to 60ah. I think if you are not going to go any higher in wattage (like get a bigger setup), then just get a little bit bigger of an alternator such as 100 - 150a and that'll solve the problem and you won't have to have a battery taking up space in your trunk or wherever you decide to put it. If you do think you might go bigger in terms of bass then I'd get something like a 250 - 270a alternator just to prepare for future builds.

    But I'm a noob so...
    This is assuming that the amp is playing a full power sine wave indefinitely... Music is dynamic. A good battery up front and
    upgraded battery/chassis grounds is more than sufficient to support a zx750. I agree with @DDtC ; on pretty much all he's said. Clipping, poor connections, or both are the most likely culprits here.

    An upgraded alt is ALWAYS a good thing to have in this hobby. But not having one is not the real problem here. Fix the issues... then see if you still want/need one.




  6. #36
    mylows10's Avatar
    mylows10 is online now Dc,tantric,singer,phd rep mylows10 is a Supporting Member of the forum!

    mylows10 is a Supporting Vendor of the forum!

    Join Date
    Sep 2009
    Location
    monterey , ca
    Age
    51
    Posts
    19,443
    Post Thanks / Like
    Images
    9
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    5117 Post(s)

    Re: What size alternator do I need?

    Pics of where the gain is set at ? Did you use a dmm ? Unibody cars don't have very many good grounding points so I also agree this is prolly the issue most cars/ trucks can hold more than 750 rms with the exception of a few. But the alt is the best option only if truly needed




  7. #37
    Based's Avatar
    Based is offline Senior VIP Member



    Join Date
    Mar 2014
    Location
    Louisiana
    Posts
    473
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    217 Post(s)

    Re: What size alternator do I need?

    Quote Originally Posted by mylows10 View Post
    Pics of where the gain is set at ? Did you use a dmm ? Unibody cars don't have very many good grounding points soni also agree this is prolly the issue most cars/ trucks can hold more than 750 rms with the exception of a few. But the alt is the best option only if truly needed
    My truck has never had problems dealing with my BRX1100 @ 1 ohm. Idk how efficient the amp is or if it is rated at 16V or what but my headlights have never dimmed. For some reason my alt charges everything at 14.1 and that's where it stays even at idle playing a 0db 40hz tone lol. Maybe I'm doing it wrong who knows. I guess I'm just lucky




  8. #38
    mylows10's Avatar
    mylows10 is online now Dc,tantric,singer,phd rep mylows10 is a Supporting Member of the forum!

    mylows10 is a Supporting Vendor of the forum!

    Join Date
    Sep 2009
    Location
    monterey , ca
    Age
    51
    Posts
    19,443
    Post Thanks / Like
    Images
    9
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    5117 Post(s)

    Re: What size alternator do I need?

    Quote Originally Posted by Based View Post
    My truck has never had problems dealing with my BRX1100 @ 1 ohm. Idk how efficient the amp is or if it is rated at 16V or what but my headlights have never dimmed. For some reason my alt charges everything at 14.1 and that's where it stays even at idle playing a 0db 40hz tone lol. Maybe I'm doing it wrong who knows. I guess I'm just lucky
    Recheck your grounds all your connection points as well the bxi isn't very efficient since you asked And load test your battery




    pioneer avhx 5500 dvd, gzpa 1.4000 x 2
    ab vfl 350.4 ,7 pc 2150 and a 150 ah power ware agm ,275 amp singer alt , 2nd one coming soon
    cdt 6.5 es 6 mids,cdt es 010 tweets,es 03 Mids ,mx1000 3 way x overs , sky high and stinger hpm o gauge wires ,also 2 tantric hdd 15's in a 9.5. ^3 ported no wall box 11.5 octo port.
    NOR CAL DB DRAG JUDGE
    http://www.dcsoundlab.com

  9. #39
    BoomTaco64's Avatar
    BoomTaco64 is offline CarAudio.com Elite



    Join Date
    Jan 2014
    Location
    gone...
    Posts
    539
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    219 Post(s)

    Re: What size alternator do I need?

    the strut tower is not a good location for a ground. use the floor of the vehicle, scratch away all pain and use your own screws and star washer.




+ Reply to Thread
Page 3 of 3 FirstFirst 1 2 3

Similar Threads

  1. What size alternator do I need for 2000rms?
    By moparerrnocar in forum Wiring, Electrical and Installation Help
    Replies: 5
    Last Post: 05-24-2012, 07:23 PM
  2. questions about my system. what 2nd battery, & what size alternator do I need?
    By es101346 in forum Wiring, Electrical and Installation Help
    Replies: 0
    Last Post: 11-18-2010, 06:23 AM
  3. What size amp do I need
    By jspiller in forum Wiring, Electrical and Installation Help
    Replies: 3
    Last Post: 02-12-2002, 03:04 AM
  4. What size amp do I need???
    By swinehunter56 in forum Amplifiers
    Replies: 3
    Last Post: 02-10-2002, 08:47 PM
  5. What size amp do I need???
    By Unregistered in forum Wiring, Electrical and Installation Help
    Replies: 1
    Last Post: 02-07-2002, 12:09 PM

User Tag List

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may post attachments
  • You may edit your posts
1e2 Forum