hey guys i have asked around and no one know so maybe u guys can help me out.....heres what im running....

Volfenhag ZX7180 2-CH 1600W Competition Amp
Pair Volfenhag ZX-4712DVX 1000W 12" Competition Subwoofers

when i had my old alternator the thing did not even run.....on friday i had a 140 amp alternator installed......they are now working but do not seem to be going as loud as they should be at. for instance when a song first starts off the subs hit good but then it instanly just fades down....what is the problem here? ur help would be very appriciated.....thanks!

 

what guage wire are you rinning? what hu? do you have good conections to the positive and ground? With a 1600w amp you should run atleast 4 gauage. 0 gauage wouldd be better.

 

im runnin 4 gauge wire......alpine 7893.....yeah all the connections r good

 

Have you tried switching the connectors on the subs, you may have one wired backwards. Just something to check

 

That would only put one sub out of phase with the other, it wouldn't prevent the system from running.

Have you checked your electrical system with a multimeter? Make sure your getting 12v with it off and around 13.8 with it running. Then check it at the amp, just measure between the 12v and ground contacts on the amp. Have you upgraded any of your factory battery wires? A regular multimeter probably won't be able to measure the power draw of your amp since most max out at 10 amps. But if you can get access to a proffesional one, you can see if your amp is not drawing enough power to operate at peak efficency. If it's not then you have a wiring issue somewhere that's restricting flow.

 

ok i found out my problem.....i had both ground for the amp and the cap together on same bolt.....made it two separate ones and it worked right up......bad news is.....they were hittin so good......about 40 minutes later my amp started smoking and my right side fried......dont ask me why cuz i have no idea

 

The amp started smoking?
That happened to a friend of myne with a Lightning Audio amp.
Return it and get another one.

 

from what i have heard those volfenhag subs are decent but there amps leave much to be desired.

 

i wish i could return it....but i bought it off a company on ebay and one of there policies is if it is a deftective unit then u must notify them within 7 days......i bought it back in january and just installed it like a week ago.....hate to say it but i think im sunk

 

I would just email them and tell them that you just installed it and it went out and you think it's defective. Tell them you'll leave more good feedback for them if they change it. If not, post feedback that they're selling unwarrantied defective goods and to buy from them. You can also threat to contact ebay and file a complaint against them for selling bad merchandise. I've found in the past that if you threaten action against ebay sellers that will hurt their business or prevent them from selling, they become much more cooperative. Good luck on getting a new one.