Question about Rockford Fosgate P3001 Car Audio Amplifier

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Rockfordfosgate amp 750s car problem

My inline fuse keeps blowing after afew mins of use.

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If after following solution #1 fuse does not blow you may be overdriving amp into to low impedance (check specs of amp for Impedance limits) Also You may Have low Voltage at amps Power terminals under load causing premature clipping and excessive Current to flow. The higher the Voltage can be held at by using External Caps and High Current Alternator and heavy guage power supply wires the Better amp will perform, Will not clip signal as easy and Current draw may be lower because your not clipping signal. A clipped signal is close to DC and Amp or speaker will eventually fry.

Posted on Jan 11, 2008

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Disconnect all speaker wires and RCA cables from the amp. Replace the fuse with a 30 amp fuse and power up the amp. If the fuse blows, the amplifier probably has shorted/leaking output transistors.

Posted on Jan 02, 2008


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The fuse is an inline located at the back of the radio. Do keep in mind that a fuse blows because there is another prob!! NEVER put in a fuse over the amp rating!!! NEVER Frankster016

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The amplifier probably has shorted output transistors. If the amp only blows the fuse after remote voltage is applied, the damage may be minor. They generally blow two transistors. Sometimes that's all that needs to be replaced.

Let me know if you have any other questions.

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