i have a stock head unit, 2-12 fosgate HX2 and a 1000watt fosgate amp, im running it at 2 ohm with a 4 gauge positive wire, when my volume is turned up all the way and the bass hits, my car starts to act retarded, shifting funny, not enough power, it feels like its drawing too much power from my battery, can someone help me? thanks in advance

 

I'm no car stereo expert, but I think a capacitor might help...

 

absolutely need a 1 farad or higher cap and it will solve all youre problems, also might make sure you're ground is secure and on bare metal.

 

Capacitors just "band-aid" the situation.

The first thing I would do would be the "big 3" grounding mod.

 

I have the same problem. When the bass is turned up too much, my car feels like its running out of gas. I think its a bad ground, but GO GET IT CHECKED OUT! My amp just burnt out for NO reason! Its an ongoing problem, and all i have is a W6 on a stock bose unit.

 

How old is the battery, both to the OP and Corvettekid?

I am running a JL Audio 12W6v2 with an Alpine MRD-M605 V12 series amplifier running at 2 ohms. My power and ground cables are all 4 gauge. I am currently running the stock Bose audio system. My vehicles is a 6MT and NEVER have I had any issues at all with the car feeling unusual or any sort of dimming from the headlights/dash when bumping.

I am assuming you both have a 5AT? I myself have not done the "big 3", however, they seem to be a bit more beneficial to vehicles equipped with an automatic transmission.

 

I have a dry cell battery in the trunk. Caps still get their juice from your stock battery. So you will still be draining your battery and putting a strain on your altenator. A drycell battery will run you about 130 or so from stinger.

 

The sreycell battery (or maybe you have a gel cell) still gets power from the alternator.

 

You are pulling more amps than the alternator can supply. The fuel injection requires at least 30-40 amps, air conditioning 20 amps, lights, 10 amps.


Now how much does that amp pull at full output. I'll bet it's close to 70-80 amps minimum. Add that up and you have a problem. There is not enough power to open the injectors or run the fuel pump. The stock alternator is (I think) 110 amps, about average, but not big enough for this.

You need at least 3-6 farads worth of caps and maybe a second battery.

 

Use a 2nd battery to power your amp.

 

coming from an electronic/computer engineer you need better grounds and maybe a capacitor, I dont know the rms values of your speakers otherwise i could tell you for sure if you need a capacitor and what size you would need.

 

I m not an audio expert but IMO it has nothing to do with his setup being too powerful. There are guys on this forum that have 2 amp with a 1000+ watts running on a stock alternator and without a 2nd battery. We also have a few people who have the same problem occuring with 500 watt amps...My bet is something was not done correctly with the install...get a 2nd opinion from another installer and have him go back over the install to find out if the ground was done properly or if anything is shorting out.

-Vin

 

I don't think wattage matters here...

 

How old is your battery and what kind is it?

 

Sooo, talking with my brother and playing with my car today. I have no bass going to my car due to a dead amp. My stations now come in CLEAR as day( a problem when the amp was in) and i have NO problem when turning it up. I think that the amp was going bad, and was struggling to keep up. Therefore it was pulling WAY too much power from the battery. I am going to hook up my brothers kicker 750w tomorrow, and see what happens. If it still acts up, its DEFINATELY the wiring, if not, it was due to a deadbeat amp i bought. Just thought id share some info.