Question about Kenwood KAC-9152D Car Audio Amplifier

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I have a rockford amp and both 40 fuses keep blowing every time i give the amp power. i thought maybe my subs were hooked up wrong so i unpluged them from the amp and they still keep blowing. my amp did get hot and cut out but it should go to protect mode i have no idea why the fuses keep blowing?

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If your amp gets too hot it can melt around connections inside and cause a short, once the amp cools the melted areas become solid agin (making it harder to fix) open the amp and check all connections.

Posted on Jul 26, 2009

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Check the wiring. Make sure your power goes to the power, and the remote comes from the remote output of your radio and the ground is hooked only to the ground. Get an ohm meter and with the fuses out probe the two terminals on each fuse with the ohm meter and put the black probe on the ground terminal of the amp, see if you get a reading. If you do then disconnect everything from the amp and check again if you still get a reading then you will need to pull the amp apart and look for a frayed wire or one that got hot and is now touching the case and fix it. You may need to take it in for repairs if an intermal component went out and is shorting out.

Posted on Jul 17, 2009

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The output transistors called hexfets are shorted.
i used to be a rockford fosgate warranty depot

Posted on Jul 17, 2009

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3 Answers

I have this hooked up and works fine with the key on, but when i start the car, sub light, amp and sub dont come on.


You have connected it to the wrong power wire - one that is only active in service mode - first key position.
You should draw a wire directly from the battery (don't forget to add a 40 amps fuse on the wire) to the amps. If you don't want them constantly operational (you will have to manually shut them down) install a relay on the wire with the command coming from a wire from the instrument key position - second position of the key. Use a voltmeter to identify the wires.

Oct 15, 2010 | Rockford Fosgate Power 351M Car Audio...

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How do I hook up one sub to my rockford fosgate p3001 amp


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.

Jan 08, 2010 | Rockford Fosgate P3001 Car Audio Amplifier

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Amp fuses blowing and amp overheat


Does the amp heat up if you power it up with no speaker wires connected to the amplifier's speaker terminals?

Jul 17, 2009 | Rockford Fosgate Punch P5002 Car Audio...

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Rockford fosgate 800 a2 amp power?


Hello desperate2le,

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.

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All right I'm having EXTREME problems with my car stereo. Not only have I talked to several car stereo advisers, and also mtx advisers I have also talked to Crutchfield advisors and no one has solved my...


Don't give up yet, I'm sure we can find an answer. With car audio, as with any do it yourself project there may be just some small thing you are missing.

Oct 10, 2008 | MTX Car Audio & Video

1 Answer

Will not power


are u sure you didn't blow a fuse? check the fuses to make sure you did not blow one because the amp will not work in that case. make sure you are not over working your amp as well because it seems like that amp is not big enough to power all four of those subs. usually 4 channel amps are used to power speakers not subs. what is the rms on your subs and amp? i could better tell whether your amp is big enough. thanks hoped this helped

Jun 24, 2008 | Rockford Fosgate Punch 301S Car Audio...

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Not working


maybe you should use 4 awg wire

Jun 24, 2008 | Rockford Fosgate Punch P5002 Car Audio...

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Sub hook ups


There's a lot more factors involved than that.
  • Power capability of the subs
  • Type/size of the sub box
  • Allotted space in the vehicle for the sub box
  • Voice coil impedance of the subs versus the capability of the amp
  • Etc.

Jun 19, 2008 | Rockford Fosgate Punch 500a2 Car Audio...

1 Answer

Spontaneously shorted, now blowing fuses on amp too.


Time to go to the repair shop. Sounds like you have a blown amp. Good luck.

Feb 22, 2007 | Rockford Fosgate Punch P4004 Car Audio...

1 Answer

P3001 amp may be fried


Check this out: http://www.techlore.com/article/14696/

Aug 06, 2006 | Rockford Fosgate P3001 Car Audio Amplifier

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