amp problem vibe a4

[parminder]

hi guys, hows everything, i havent been on here for a while now sorry i have left the xbox scene so i dont know if i will be able to answer anything, just wondering if you know something with i have a problem.
recently i bought a package for my car its a vibe a4 amp rated 2000watts and 2 x 12" black air 2 subs in twin enclosure of 550w 1600w max. i connected everything up with a 4 gauge wire 140amp cut off switch and with 1 farad capactior. when i turn it on it works fine for few minutes on loud but then shuts off ie no output, ive been told its actually overheating which i dont uderstand why. then i connected a 10" alpine 300rms 1000w sub and it works fine and doesnt cut off, i ve tried turning gain down and everything but cant seem to be a ble to get vibe sub work. if you have any knowlege on this please let me know.
thanks

[sccrbrandon4788]

How do you have it wired up? I can't find specs on the subs, are they 2 or 4 ohms? How many voice coils?

[parminder]

its this one

http://caraudiosecurity.com/shop/produc ... /5318.html" onclick="window.open(this.href);return false;

http://caraudiosecurity.com/shop/produc ... /4207.html" onclick="window.open(this.href);return false;

[sccrbrandon4788]

The reason for it cutting off would be because of an overload. You could try running the speakers to the same terminals by bridging them. Basically put both positive wires together on one channel and put both negatives together on the other channel. This may help not draw so much current so they work. Try it out.

[parminder]

hey man still the same thing. cuts off again then if i turn my head unit off and back on few minutes it starts playing again. is there anything else i can try

[sccrbrandon4788]

Sorry for the delay. Try to just do one sub, your amp may be bad. You also might want to turn the gains down if you have it all the way up since that will cause problems too.

[parminder]

i was talking about one sub, the gains r up but not too high ive set em up to about half of what it can go upto. i actually have 2 vibe a4 amps and they both do the same.

[sccrbrandon4788]

Check your ground and other connections. You may want to get some fork connectors so you can attach the the power and ground to the amp better.

I wish the website said more about the speakers. The impedance may not be wired right for the amp and causing problems by overloading the amp, basically causing the amp to push out more than it can.

[parminder]

yeh the ground is paint free and i am actiually using a 4 gauge vibe cable so dont know if thats suppose to be a problem. the thing is its doing same for a alpine sub asswell so not sure exactly what it is. i am guna giv it 1 more push if not well thats my loss there. thanks for the help man.

[sccrbrandon4788]

yeah it has to be your amps. do you know anybody that has an amp that you could test with?

[parminder]

ive tested the subs with a legacy 800 watt amp and it works fine on that one though

[sccrbrandon4788]

It sounds like your amps just aren't cutting it. They might not be getting enough power or they just can't handle the signal coming in and going out. Can you send them back and get something else?

[parminder]

i bought the amps from a guy not from a retailer but i am guessing he used both amps 2 power both subs. the strange thing is both of them do the same thing. i even changed the heads unit so thats not a problem.