Subs cut off at high volume

[ImTyler]

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!!

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.

[PaulD]

turn the amp gains down .....

[ImTyler]

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

[PaulD]

take the cap out of the circuit and see what happens


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

[ImTyler]

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

[ImTyler]

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?

[PaulD]

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

[ImTyler]

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

[PaulD]

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

[ImTyler]

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

[PaulD]

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

[ImTyler]

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

[PaulD]

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

[ImTyler]

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?

[PaulD]

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.