Question about Car Audio & Video
I have Rockford fosgate 10" woffers and a friend gave me this Jensen amp will it run my tens?
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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
Ok.. Bridge the two sub into 4ohm than bridge to amp.
So. this how it goes.
sub1 + -
to | |
sub2 - +
amp (L) - + (R)- +
This will use the full potiental of RF 800a2 amp. I believe it like 1153 watts max out.
Posted on May 29, 2008
hows it going so you need it to be installed or you can install this yourself? well the best bet fund to get stuff done cheap is t get the stuf you will need to do an install like a install wiring kit and tools and post a installer help on craigslist.org iin your local area would be the cheapest way or just go to your local audio stereo shop thanks again and i hoope this help have any more questions please feel free to contact me if you need a step by step install i can help you in that and save you big bucks thanks again. always forward jcbproducts
Posted on Dec 03, 2008
Watts delivered is a function of the voltage times the current. If the amp was 100 percent efficient, it would need 33 amps at 12V for 400 watts. At 14.4V, it would only need 28 amps. Of course, amplifiers are NOT 100 percent efficient, only about 50-60 percent in many cases, but somewhat higher for monoblocks, maybe 80-90 percent. So you're looking at a fuse in the 60-80A range. In the absense of a specific fuse size from the manufacturer, I'd start the primary fuse at a 60A and if the amp blows it on power up/immediately/frequently, move up to an 80A.
All of the Rockford-Fosgate 2-channel bridgeables I've ever seen show using the left positive (+) and the right negative (-) for bridging. But if it's not shown right on the amp, I'd call or email RF for the correct connection. The new amps do show it.
Hope this helps.
Posted on Apr 28, 2009
Hey i have looked over many rockford manuals,(i own a 300.1 my buddy owns a 325.1) and for there mono(.1) amps there hooked together on the inside so channel A+ and B + are cencted on the inside the amp. So you ither hook one 2ohm sub to channel A or you can hook 1 4ohm subs to channel A and 1 4ohm sub to channel B. There 2ohm stable so any lower will eventualy burn the amp out.
Posted on Jan 19, 2010
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