Question about Rockford Fosgate Car Audio & Video

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I have an internal problem with a rockford fosgate 900 watt mono amplifier. when its all hooked up the power,light comes on but it wont bump...what could be wrong with it? Please help. Thanks

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Nearby where the RCA Cables are plugged into the amp, there should be a "Gain" knob. It is usually a small knob with a flat head screwdriver inset on it. Check to see if this knob is turned down, which is the volume control of the amp.

Turn it up, but as a rule of thumb, try not to exceed 2/3 volume. This will keep your amp from working too hard, which causes it to heat up, which can cause undue stress & eventually damage.

You could also be having phasing issues.

If you have multiple sub amps, make sure the RCA's are plugged in the same way. White to White, Red to Red.

Also, check to see how your subwoofers are connected within the box. If the speaker terminals on the box are positive & negative, and then this is switched within the box, the speakers would be out of phase. Check to see that the positive input of the box terminal is going to the positive input of each speaker in the box. If not, this would cause them to cancel sound from one another, which would result in your non bumping problem.

Posted on Mar 17, 2011

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Check the remote wire that its on. check the know on it that its on low cross over whith decibal gain. also make sure your rca plugs comming from the cd player are in the input on the the amp , good ground and that you didnt plug in the wires wrong for each sub. its very possible you may also have a loose ground connection or a blown fluse. either on the amp or under the hood. but most likely on the amp.

Posted on Mar 17, 2011

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1 Answer

Does anybody know what watt this is. it's sosed to be a 2400 watt and why does it have 2 ports on each side to hook up speaker wire And what's the best way to run it with a 800 watt Rockford fosgate


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It was hooked up to a 2 or 1 ohm load now it dont work


if it was hooked to a 1 ohm load its most likely fried. what watt were you trying to push?

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I have a rockford fosgate t1500 amplifier and two 12"kicker L5's duel voice coil. the subs are wired together as one. they worked for about half an hour. now the amp and head unit comes on but no...


This amp is rated at 200 watts when run at 4 ohm load when in bridged mode (mono).You will need to check the measurement of the load at the amp's positive and negative location where it meets the speakers. You are actually going to need to measure the load of the speakers on the amp. If it ran too low of a load, meaning less than 4 ohms, there is a good possibility that the amp overheated and damaged some internal components due to not enough resistance. Some of their amps have internal fuses that can be replaced. It may be time to visit a diagnostic shop.

Good luck!

Bruce

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I have a rockford fosgate punch P325.1 subwoofer mono amp that blows a fuse every time i start the car. I have a second pioneer amp but that works with no problems. How can i fix this?


Is it the correct size fuse ? Is it the power fuse or remote ? Either way check your connections going into the amp . Try this hook your other amp to the set of wires for the rockford if that amp has a problem its a wireing problem if not chances are its an interal problem on the rockford . Hope this helps !

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2 12 p3d212 2 ohm hooking up to a rockford fosgate p325 .1 mono amplifier can it work? and how?


Hello a_brake11,

The P325.1 is relatively small to power a pair of P3's. You'll only get 325 watts RMS at 2 ohms (162.5 watts per sub). The P3's power range is from 100-500 watts, so they will work, but don't expect them to be really loud.

For best power, your subs should be wired with the voice coils in series and then the 2 subs paralleled to the amp resulting in a 2 ohm load.

Hope this helps.

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My amplifier is a t3002 keeps burning the fuses


I have a 900 watt punch that wont keep any fuse i put in it and need help badd! Its not my wirering cuz i have another amp in there now but its nothing even close to my baby!

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1 Answer

Not a problem just a question


  • 100 watts RMS x 2 at 4 ohms
  • 200 watts RMS x 2 at 2 ohms
  • 400 watts RMS x 1 at 4 ohms in bridged mode
  • stereo or bridged mono output
  • 4-ohm stable in bridged mode
  • Tri-Way capable
  • requires 8-gauge power and ground leads — wiring and hardware not included with amplifier
  • 50-250 Hz high-pass/low-pass (12 dB/octave) crossovers
  • wired remote included for fingertip control of Punch Bass (0-18 dB boost at 45 Hz)
  • MOSFET power supply and output devices
  • MEHSA mounting technology increases the heat transfer from the MOSFET output devices to the heat sink, for higher power output, lower operating temperatures, and greater reliability
  • TOPAZ — noise-killing differential inputs that eliminate 80% of ground loop noise
  • Trans•ana circuitry keeps preamp voltages low and signal paths simple for outstanding audio quality
  • NOMAD — advanced protection circuitry for "intelligent" shutdown protection
  • speaker- and preamp-level inputs
  • 11-1/8"W x 2-3/8"H x 9-7/8"D


  • Wire your sub in bridged mode (4 ohm mono)
    + to + on amplifier
    - to - on amplifier
    (using bridging terminals)

    Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

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    Remove the load from the amplifier (subs) and the RCAs
    Retry.
    If the light stays on, there are internal problems with the amplifier, and it needs to be serviced.
    If the amplifier works normally, attach the RCA's and power on again.
    If it remains on, connect one sub, and then the other.
    Your amplifier is a 2 channel amplifier rated at
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    125 Watt - 2 Ohm - 2 channel(s)
    250 Watt - 4 Ohm - 1 channel(s)
    Your amplifier is not rated for a 2 ohm mono load.
    If you have Single voicecoil subs wired in parallel, you have a 2 ohm mono load - your amplifier will eventually fail.

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    Quick question, amp problem


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