Subs cut off at high volume

Hello, My name is Tyler and I have a 1999 hyundai tiburon. Starting off with a normal walmart battery and a stock Altenator.
I can run the system and it sounds great. once i turn it up to 27 + it starts to cut off on the hards hits. only for a short pause to cut off again on the next hit. My ground wires seem to be fine. All the other wires are solderd very carefully.
Please help Me!!:crying:

I am running 0 gauge wire throughout the car leading from battery to cap to amp. the wires leading from cap to amp is only aprox. 4-6 inches long.


Im trying to run two Kicker 08S15L74 15" 2000w dual 4-ohm subwoofer wired parallel to 1-ohm. (in a sealed box if that matters.)




Specs:

Sensitivity: 89.4 dB
RMS Power Range: 1000 Watts
Peak Power Handling: 2000 Watts
Impedance: Dual 4 Ohm
Low Frequency response: 18 Hz
High Frequency response: 100Hz
Im using a Pyle PLCAPE50 5.0 farad digital power capacitor

My amp is a Hifonics BXI 2010D 2000w class d mono block brutus series amplifier





Specs:

RMS Power Range: 650-2000 watts
Number of channels: 1
Low Frequency Response: 35Hz
High Frequency Response: 250Hz
RMS Power Output: 1 x 650 W @ 4
RMS Power Output: 1 x 1300 W @ 2
RMS Power Output: 1 x 2000 W @ 1
Protection: DC, Speaker Short, Thermal, Overload
Power Supply MOSFET
Audio Output MOSFET
Dampening Factor: >250
Signal To Noise Ratio (A-weighted): >95dB
Variable Input Level Control (unbalanced): 0.2V - 9V
Input Level Control (balanced): 0.04V - 18V
Input Impedance (un-balanced): 47k-Ohm
Input Impedance (balanced): 20k-Ohm
Power / Diagnostic L.E.D.
Variable Low Pass Filter / 24dB: 35Hz - 250Hz
Variable Subsonic Filter / 24dB: 15Hz - 35Hz
Variable Bass EQ: 0dB - +10dB
Phase Shift (0 - +180 degrees)
Unbalanced Inputs (RCA)
Balanced Inputs (DIN)
Line Output (RCA)
Speaker Terminals (molded): 12ga
Power/Ground Terminals (molded): 0ga
Remote Bass Module: HFR-3
Parametric bass EQ with 45Hz bass boost and variable control from 0db to 10db
Variable Low Pass, Subsonic Filter, Phase Shift and Level Control
Balanced line input for MX accessories and line drivers
Bass Remote included
Built-In System Diagnostics protects from short circuits, over load, thermal overheat and DC Offset.

turn the amp gains down .....

Gains all the way down, and the head unit is also bass 0 etc.

take the cap out of the circuit and see what happens


also, what does the voltmeter read on the cap when it cuts out ?

Started out with no cap. Did this same thing before i added it. Figured the lack of a cap was the problemo. so i have tried testing it without the cap. no success

I have just played around a little with the car. It seems to last a bit longer when i drive for a while with no music or amp drawing power. maybe altenator charging the battery to peak be4 i play it? do you think the lack of a brand new batt. could be the problem?

you're drawing too much power, batterr, alt or both may be going bad.

okay. so i bought a new battery more power better amp etc etc. but it still cuts out but only sometimes?

your alternator is still not keeping up with the peak power demand.

IC? and damn! i cant find a better then stock altenator anywhere in this town!!!

you have to order high output altys off the net, no one locally will carry them

okay. um what would your recommendations with altenators sizes be? i found a 90-amp remanufactured. would that be reasonable?

that might be enough, you really need take current readings to see

think i just figured it out.. its shaking the head unit to much and it skips on the cds. Fm/am radio it doesnt cut out. i think problem solved. any recommended head units? that doesnt cost the price of my car. preferably with a remote. nothing fancy such as screens etc. or is there a simple fix to this problem?

try cutting a tie-wrap or two into like 1/2 -1 " stips and stuffing them between the mounting basket and cd player. Also make sure the back strap is installed.

Is the amp going into protect? Have pix of the ground thats connected?

Well Heres my finial outcome. Im breaking them in. Check out my vid. Rate or tips or comments? i could use all the comments and tips i could get! thanks alot!!! link for video >> http://www.youtube.com/watch?v=MtcJFgROEuo

it's honestly hard to trell what something sounds like from a youtube video. Generally, I would have ditched the cap, but that's just me.

really? like my headlights dim harsh when i dont have it.. plus its a stock altenator. wouldnt that be too much?

Had the same problem in my boat. Use an Ipod or mp3 player. If your head unit has an input which it most probably does the cost of the Ipod would be cheaper than a new head unit.

for some vehicle/stereo combos, the cap does help with light dimming