Question about Rockford Fosgate P3001 Car Audio Amplifier

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My amp only powers the subwoofer when the radio is on but wont when the cd player is on

I just had my new amp, sub and speakers installed yesterday. when i have my car stereo on the radio the sub amp and everything work just fine, but when i turn it on the cd function to play a cd there is no sound coming from the sub like the amp has completely powered off. i looked at the amp when i was just listening to the radio and the blue power light was on and it all worked fine then i switched it over to the cd player and the blue light went off and the amp completely powered itself off. i have a rockford fosgate punch amplifier P300-1. CAN YOU HELP PLEASE?!!!!

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  • eenloe Jun 24, 2008

    OMG thank you so much. Its been driving me crazy there is never anything good on the flippin radio. and cds sounded awful!!! THANK YOU SO MUCH AGAIN!!!!!

  • eenloe Jun 24, 2008

    it didnt work :-(

  • jdsurely Jan 29, 2009

    I am having this exact same problem, and I am 100% sure that I spliced the correct wires. I spliced the REM to the REM/Antenna wire in the harness. I also just double checked to make sure that was correct. Any new ideas?

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The person(s) who hooked up your system made a boo boo. They wired your remote turn on lead to the power antenna lead instead of the amp turn on line (both are blue and easy to mix up). Thus when your radio is on it sends a signal to the amp and the amp turns on, but when you set to CD the signal goes away and your amp shuts down. Easy fix, just re-wire the amp turn on lead and the problem will be fixed.

Posted on Jun 24, 2008

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SOURCE: Rockford Fosgate Punch 800 A2 shorting out.

replace the inputs on ur amp

Posted on Jun 29, 2009

  • 1 Answer

SOURCE: Rockford Fosgate Amp Repair Guild

I would love to get a copy of that repair guide you made. Could you please

Posted on Sep 02, 2007

Professor_V
  • 81 Answers

SOURCE: Rockford Fosgate Punch End CapsEnd Caps

I TAKE IT THAT YOU ARE REQUESTING A SOURCE FOR A PAIR OF ENDCAPS FOR YOUR PUNCH-200IX. IF THIS IS THE CASE, I SUGGEST THAT YOU CHECK EBAY ON A WEEKLY BASIS AS I AM SURE AFTER SOME TIME, YOU WILL SEE A PAIR LISTED. THERE IS ALSO A SELLER ON EBAY THAT HAS MANY OF THE LOGOS FOR THE MANY DIFFERENT MODELS THAT CAN BE PLACED ON ANY OTHER MODEL ENDCAPS FROM THE SAME SERIES (DSM, IX, X2, ETC. LET ME KNOW IF I MISUNDERSTOOD YOUR REQUEST......V

Posted on Jan 06, 2010

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I have 2 amps instalkled in my car one is sony 1200w 2 channel amp for speakers and one is solid audio f2500d for 3 subs my sound and every thing was good but suddenly from yesterday im having trouble when...


First disconnect the CD head unit from the sub amp and see if the other amp works. If yes, the problem is the wires to the amp, the amp itself, or the subs/sub wiring. If no, the problem is the head unit--probably an internal short.
If the other amp works with the sub amp disconnected, reconnect the sub amp to the head unit, but disconnect the sub wires from the amp. Try the CD player. If the amp goes to protect with no speaker wires attached, the amp is bad. If the amp is OK, the problem is the subs or sub wires. Hook the wires up to the amp again, but disconnect them from the speakers. Try the player again. If the amp goes to protect, the problem is the amp wiring. If not, the problem is the subs. Check the impedance of each sub using an ohmmeter to determine which amp is out of spec.
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Hi, if you still need a photocopy of instructions email me mail@srands.co.uk

If you want instructions in brief this involves POWER CONNECTIONS, PHONO LEAD & SPEAKER CONNECTIONS:

POWER (At the same time when routing these wires, I would connect the PHONO LEADS from the car cd player to the amp, if your car cd player only has 1 preout (1red & 1 white) then you will need two phono splitters, a female to 2 males. Phono leads carry the unamplified sound from cd player to the amp):
~ Permanent 12V+ (Thick lead that is fused direct from battery all the way to the amp, wire must be 20a to 30a +, hence 1cm diameter wire, known as AWG8, Maplin sell cheaper kits then most)
~ Amp REMOTE (A thin insulated cable (5a is OK) from car cd player amp remote wire, this turns the amp on when the cd player is on, if your car doesn't have an amp remote wire, suggest nearest ignition supply or seperate switch that you turn on when you want to turn on the amp)
~ GrouND 12V- (Insulated lead (20a to 30a) to nearest part of unpainted car chassis such as interior panel screw hole, instead of an insulated cable all the way from the batery, this is common practise.

SPEAKER:
Each speaker has a - negative & + positive, these must connected correctly. The amp has 4 channel, 2 channel labeled as front, 2 channels labeled as rear. Using speaker wire, connect cable from amp to speakers. Note: Ensure the speakers being connected only receive sound from the amp (Not cd player as well, as would damage players or at the very least impair sound)
The amp has a feature called bridgeable this means a sub 8" or 10" sub can be powered by 'bridging' two channels. For example there are 2 ways to bridge power a Sub on the NIKKAI EAPA450:
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OR
ii) Sub speaker wire positive + to channel FL and Sub speaker wire negative - to channel FR.

Switches:
~ Bass boost, meant to be on for a channel if using sub, otherwise off.
~ X-over mode adjust hi/lo frequencies, only work if both x-over switches are on! Then adjust switch frequency knob, until it sounds right.
~ Gain (Volume knob) adjust volume knob up or down, until it sounds right!

NOTE:
You will need patience! many hand tools and parts such as: Wiring kit, fuse holder 20a/30a, Phono leads, speaker cable, Fork/ring connectors, wire strippers, wire cutters, set of screw drivers, also ueful to have zip ties to tdy excess cable and 'P' cable clips to tidy speaker wire to shelf, etc.

OK

Any more questions just email me mail@srands.co.uk

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Hello missywarden,

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Your sub needs to be a minimum of 4ohms and should be relatively efficient. I'd look for a sub that has an RMS power range of from about 75 watts up to a maximum of 250 watts.

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Hope this helps.

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You can try another amp and another set of speakers on the same wiring to see if they work. If not, the only thing you have left is the wiring and connectors (if connectors are used).

This suggestion is valid providing that substitution equipment is not defective.

Jerry G.

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