Question about Rockford Fosgate P3001 Car Audio Amplifier

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No bass the amp is turning on but there is no bass. there are words but no bass and i cant figure out what is wrong. can some one help me please

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Re: no bass

There's a small switch on the side labeled LP-AP-HP. Make sure it's in the LP or AP position, not HP. There's a small dial labeled FREQ; if your amp is connected to subwoofers and the switch is in the LP position, adjust the dial until it's set around 80-100.

Posted on Jun 14, 2007

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probably the amp going to safe or protect mode judging by the fact that you have 3 subs wired to it i would say it is not 1 ohm stable try disconnecting 1 sub and see if it still happens this will be running a 2 ohm load rather than 1 if it stops happening then you need to figure out a better wiring configuration that will work with your amp.

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I need help?

id check remote signal with a test light and also if there is a High pass or Low pass filter either on the head unit's settings or the Amp's controls

if your amp or head unit has a High pass filter setting enabled that would explain no bass being sent to your speakers,

if you are using a separate crossover to send the bass signal check those settings too..

if all else fails
test another amp on your system (if it works that would discard problems with the rest of the system's output)

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I dont know if this will help you but start at the deck and make sure that the outputs(RCA) arent crossed over to highpass and do the same at the amp make sure that its set for lowpass- set half gain -bass boost half gain- subsonic minimum - If that doesnt help try using an i pod with an adaptor that you can play it right into the amp this is to see if you are getting signal from the deck to the amp if it doesnt work with an i pod or mp3 plugged directly into it then you may have got you a blown amp going on- good luck with that

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1 Answer

Playing music for about 2hours and bass amp shuts down

You have maxed out the amp! if your running one 4ga. pwr wire to all your amps, it's choking. Going to Wendy's buying a frosty and sucking it thru a straw!. Your amp is starving for more Voltage and current. That amps peak output is 1200w @ 1ohm, not too shabby! Now onto the next issue: Grounding!, just as important as power! Your amp MUST be grounded properly. Don't ground it to a seatbolt or side wall of the vehicle, go directly to the floor, hopefully less than 2-3ft tops. using the same gauge wire as power. If your power is longer than 12 feet, and in most cars it is, you loose alot of voltage and current flow to the amp the longer the run, the more you loose. That's just how DC power works. What's happening to your amp is it's working itself to death and creating massive amounts of heat. "enough to cook dinner" Run a 2ga or 1ot power wire to a distribution block at the amps. Wire in your other amps, then use the stiffening cap just for the sub amp. Not a cheap answer but it will solve most of your problem. Next, set the gain on the Sub amp NO HIGHER than 1 o'clock. Beyond this, and there's no help for it, there's no more gas pedal to push!. Enjoy your system but don't kill it! Hope this helps

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1 Answer


you need to get a bigger ground wire and the cut in and out will stop the cutting in and out is the protection mode starting if it cant hold the thump a capacitor 2farad will hold the bass
hope this helped

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Amp problem

These amps have a problem with broken shield connections on the RCA jacks. If the shield breaks loose from the frame of the RCA jack, you will have this problem. If you disconnect the amp from power and pull the cover, you can check to see if the shield is loose in the frame. if it is, it needs to be soldered.

You can also have this problem if the shield ground opens on the head unit.

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1 Answer

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hi, have you figured out whats wrong with ur amp ...i have the same amp ....and as soon as i finished the connections ...and connect the remote on wire,,, the amp goes on ...making a ticking sound with the green light blinking and the red light staying solid on ...whats the problem please help can i fix this amp is a jl e6450 using a panasonic cd player with a built in amp ....and thats the cd player im trying to connect to the jl amp ...please HELP

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