4awg power cable fuse keeps blowing

[acer209 0]

im running a power acoustik 3000 watt mono amp. i'm using 4awg pwr cable and ground.

stock alt. i just pulled out my 2 12" power acoustik mofos that i was running and put in a fully loaded 18" fi btl.

well anyways when i first hooked everything up it was working fine for 5 mins. then i started blowing fuses in the power cable. i checked everything for shorts, and if anything was grounding out. everything seems fine. even if i dont connect the sub to the amp the fuse still blows. whats causing this? is it because i need thicker power and ground cable?

[Tirefryr 1,742]

You need a new amp, or get it repaired. Make sure you have the 12V wire on the positive and not the ground as well.

Does it blow even with the amp off? If it does, you have a dead short somewhere. Could be in the amp, or the wire. If it only does it when the amp turns on, then the amp is toast.

[KU40 173]

what voice coil configuration did you get with the sub? How is it wired to the amp? But if it does it with the sub not connected, tirefryer's right and your amp is likely toast unless your power wire is cut a little somewhere and grounding out to metal in the car.

[acer209 0]

i didnt think it was the amp that was blown because it turned on for a second or 2. its dual voice coil and its bridged. the sub isnt connected and the fuse still blows. i'm gonna take a closer look at the power wire.

[KU40 173]

i didnt think it was the amp that was blown because it turned on for a second or 2. its dual voice coil and its bridged. the sub isnt connected and the fuse still blows. i'm gonna take a closer look at the power wire.

That still doesn't really help. Model numbers of amp and sub, voice coil impedance, and whether the voice coils were wired in series or parallel would be more helpful.

[acer209 0]

i didnt think it was the amp that was blown because it turned on for a second or 2. its dual voice coil and its bridged. the sub isnt connected and the fuse still blows. i'm gonna take a closer look at the power wire.

That still doesn't really help. Model numbers of amp and sub, voice coil impedance, and whether the voice coils were wired in series or parallel would be more helpful.

the amp is the Power Acoustik Class D A3000D

• MOSFET Power Supply Transistors

• Pulse Width Modulation Circutry

• Three-Way Protection Circuitry (short, thermal & overload)

• 2-ohm Stereo, 4-ohm Mono Stable (A520)

• Tri-Mode Capable (A520)

• Selectable Hi/Full/Low Pass Crossovers (A520)

• 200mV-8V Low Level Inputs

• Pre-Amp Outputs

• Dash Mount Remote Gain Control (mono-block model)

• Variable 12 dB 40-250Hz HPF (2 ch. model)

• Variable 12dB 40-250Hz LPF (2 ch. models)

• Variable 12 dB 40-250Hz LPF (mono-blocks)

• Variable 0-18dB 45Hz Bass Boost

• Variable 12 dB 15-40Hz Subsonic Filter (2 ch. models)

• Frequency Response: 10-30kHz (2 ch. model)

• Frequency Response: 15-150Hz (2 ch. model)

• Signal-to-Noise Ratio: 98dB

• Total Harmonic Distortion: .02% (.50% mono-blocks)

• 4 ga. Power & 8 ga. Speaker Terminals

http://www.poweracoustik.com/pa2006/product_AUDIO_AMP_CLASSABD.htm

18"BTL dual 2 ohm i had it wired originally in series

Fs: 31.9 Hz | 31.1 Hz

Re: 0.7 Ohms/coil | 1.4 Ohms/coil

Qms: 6.26 | 6.42

Qes: .26 | .24

Qts: .24 | .023

Mms: 313g | 329g

Sd: 1210cm^2 | 1210cm^2

Vas: 163.1 l | 163.1 l

Spl: 94.9dB 1W/1m | 94.9dB 1W/1m

Bl: 18.3 N/A | 27.2 N/A

Xmax: 28mm * | 28mm *

Rms: 2000W * | 2000W *

https://ssl.perfora.net/www.ficaraudio.com/sess/utn;jsessionid=154a73b256a7bd6/shopdata/0050_Speakers/0010_BTL/product_overview.shopscript

Edited August 1, 2009 by ace209