Question about Rockford Fosgate Punch 250a2 Car Audio Amplifier
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Posted on Jan 02, 2017
SOURCE: Rockford Fosgate P2502
Hello tejano71, I would suggest that you check your grounding and if possible run an extra ground from the battery ground just to make sure. Then I would use an DC line voltage filter between the power supply and the AMPs. If this does not work. You may have an issue inside of the fosgate AMPs. To troublehoot these you will need a voltmeter (set to the AC setting), audio tone generator (multiple settings from 20Hz to 20 Khz), two dummy speaker loads (set to proper impedance and wattage), and an oscilloscope (to see if clipping is occuring). After you have these items, connect the dummy loads to the AMPs and then connect the ground wire to the AMPs, and connect the power supply to the Amplifiers. Put one of the oscilloscope leads across one of the dummy loads and the other oscilloscope lead across the other dummy load. at this point connect the Audio Frequency Generator and set it to 20Hz and increase it to 60Hz as you also increase volume at each frequency looking at the oscilloscope for any signs of clipping continue to increase as you get higher in frequency. You should see very little clipping. If clipping is seen the actual unit may have a voltage regulator problems. If the unit has voltage regulation problems, I would suggest that you take the unit to a repair shop for further investigation, I have repaired quite a few of these units and for the most part regulation on these items sometimes can go bad with very little warning. Let me know if this solves your problem, or at least points you in the right direction. Thank you, Shuttle83
Posted on Sep 05, 2007
Assuming your P3 has a single voice coil (it will have only one place to plug your wires into) you will be running this in a bridged mode. You will take the left (+) coming off the amp and plug it into the (+) on the P3. Then take the right (+) from the amp and plug it into the (-) on the P3. This will make your amp push 500 watts to your sub. Now on the amp make sure your adjustments are as follows: Signal input switch is set to unbalanced for RCA input. Left Phase switch is set to 0. Right phase switch is set to 180. your X-card should be set to low pass. And adjust the gain for both R and L equally so it has equal power from both channels.
Posted on Aug 09, 2009
You're not going to be able to get that - it's considered proprietary information and won't be made available to the public.
Posted on Apr 30, 2010
You could open it up and if you are familiar with soldering that is most likely your problem something that was soldered down has come loose.
Posted on Mar 03, 2011
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