need help hooking up 2 subs to a 2ch amp

Discussion in 'Car Subwoofers' started by cmac1231, Nov 18, 2006.

  1. cmac1231

    cmac1231 New Member

    How do you hook up a 1200W 4 Ohm Voice Coil Sub and a 800W 2 Ohm Voice Coil Sub to a 2ch 400 watt bridged amp?
     
  2. DaveDSMer

    DaveDSMer Full Member

    uhhh.. you hook the positive and negative of the first sub to the first channel.. then you hook the positive and negative of the 2nd sub to the 2nd channel.. then you watch your subs die from being underpowered.
     
  3. aznboi3644

    aznboi3644 Full Member

    Um...Dave. It is impossible to damage a speaker from underpowering it...thats why they have a thermal power handling limit.

    The only way to blow a speaker is to OVERpower it...meaning exceeding its thermal power handling limits...either that or it may fail mechanically before it fries
     
  4. DaveDSMer

    DaveDSMer Full Member

    a 400 channel amp.. trying to run 2000 watts worth of subs. You are going to clip the hell out of them trying to get them to move enough to hear them. Secondly, from what I understand, if they don't really have enough power to move much they cant cool themselves properly. Perhaps some of the big audio guys can chime in.
     
  5. TheViking

    TheViking Well-Known Member



    Gotta disagree with ya on this buddy.......


    You can just as easily dlow a sub by underpowering it as you can overpowering it....Granted, with todays better technology it is harder to do...


    Subs can launch themselves into next week by many methods....

    1 Too much power which causes excessive thermal breakdown of the voice coil, TOASTED

    2 Putting it into the wrong box design which can allow it to mechanically fail, PUKE


    3 Nor enough power which due to the many idiots that dont know waht clipping an amp is, which is essentially sending straight DC voltage from the amps power supply to the voice coil...speakers really hate DC voltage in thier voice coil....and this voltage can be from 23 volts on up to a couple hundred volts.....


    4 I cant remember the other one right now,,,,,give me a while..........


    Anyway, i am right and you are wrong, but i love you anyway!:p
     
  6. pedro quiroga

    pedro quiroga Well-Known Member

    oh i know.a trunk monkey can damage a sub too.:lol:
     
  7. TheViking

    TheViking Well-Known Member









    This is true!
     
  8. aznboi3644

    aznboi3644 Full Member

    Hm....I did say that it could fail mechanically before it fries.

    Also if your sending a clipped signal than yes you can OVERPOWER IT...exceeding its thermal limits.

    Also I don't believe that the sub can fry from not being able to cool itself enough...so what happens when you play music at a low volume for extended periods of time??? does the sub always fry from not moving enough to cool the voice coil???
     
  9. DaveDSMer

    DaveDSMer Full Member

    well i guess if you want to use a 400 watt amp to run 2000 watts of subs i already explained above how to wire it.. i personally still think it would damage it but aparently im wrong. I guess you can run yours and let us know if anything happens.. that would be a neat experiment.
     
  10. TheViking

    TheViking Well-Known Member

    OK, I aint argueing with anyoine here............



    I need to do a post in the hows and whys of why a speaker can launch....



    Enough said.......


    this is the wrongg place to do it...cmac, continue on..........
     
  11. aznboi3644

    aznboi3644 Full Member

    Time for another stickey...lol

    Sorry Viking but I'm a firm believer that you cannot fry a speaker by underpowering it.

    Yes a 400 watt amp can put out way more power when in full clip...meaning basically exceeding the thermal power handling
     
  12. Hautewheeler

    Hautewheeler Full Member

    back in the day, I knew a guy who had the same theory.

    he was not a friend, but he hung out where i hung out. he had four tens in his escort hatchback. he had one amp running them all. he played it loud and it sounded like crap, but intermediately the amp would start to clip, and then it became worse and worse as the speakers began warming up.

    this loser's system no longer works. It IS possible to kill a sub, or an amp when an underpowering issue is created.

    putting a decent 800w sub with a decent 400w amp will not hurt anything unless you push it too hard.. the sub will take it, but the amp will not, and when the amps starts flaking, it's gonna take the sub along for a bad ride.

    1000 watt amp+ 1200 watt sub? - not a problem
    400 watt amp +one 2ohm 800watt sub, AND a 1200 watt 4 ohm sub?

    we also need to pay attention to the impedance problems presented by this, and also pay attention to what the amp is rated stable at.

    this is a recipe for fireworks (not to mention it's gonna sound like poop before it goes pop)

    YOU CAN TOTALLY FRY YOUR STUFF BY UNDERPOWERING IT