Question about Kicker DX350 Car Audio Amplifier

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My amp goes into protection mode at high volume

I have a kicker amp running two 12's. the system plays but if i turn it up too loud the amp goes into protection mode. can u please help?

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  • tdhesseltine Nov 04, 2008

    i have a kicker zx1000 amp running on two 10" kicker L7 and when i turn the volume up the amp shuts off after a few seconds and goes into protect mode... why???

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Need more info, make and model of amp and subs please

Posted on Feb 21, 2008

  • cord3r19 Feb 03, 2011

    can u help me out message cord3r19@yahoo.com got a kicker kx 700.5?

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Hi does the amp return to normal operation once the volume is lowered? If so it sounds like the amp is seeing too low an ohmage due to the way the subs are wired & they are drawing too much current so the protection circuit intervenes to prevent damage.The minimum ohmage this amp must be operated at is 2 ohms so if you are running at 1 ohm this will cause the problem you are experiencing.
Cheers, acbva.

Posted on Nov 15, 2009

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1 Answer

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Check power make sure you have solid 12 volts. Disconnect speakers, shorted speaker can cause protection mode to engage. If still in protect mode will need to repair. Kicker does out of warranty repairs on kx series amps or try T.I.P.S contact at linearpower.com. Iirc Ray @ tips was one of the engineers at kicker back when kx series was introduced.

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I have 2 12" kicker solar baric squares L7 hooked up to a kicker cx 1200.1 amp as soon as I turn bass knob up it cuts out and amp goes into protective mode plus I have a 3 microfarad copasitor hooked up...


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If you have checked your ground, live, remote and RCA's, The problem may lie with your kicker speakers.
There may be a loose wire connection on the speaker terminals (hense no sound).
Check the terminals at the speaker (+) and (-) then check the speaker wires to your amp inputs.
Usually if there is a fault with any wires linked to your amp, the amp goes into protect mode.
If your amp is not going into protect mode, try linking a different speaker to each terminal on your amp (left) then (right). If you get sound through a different speaker, more than likey your speaker wire to your kickers has came loose (due to vibrations) or there is a break in your speaker wire.

Hope this helps. If any more info is needed I'd be happy to help more. Please rate if helpful

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Turns on but heats up and goes into protection


Capital Audio & Electronics Repair in Tallahassee,FL we repair all namebrands & all models--850-339-1130 lowest repair prices in tri-state area

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My amp goes into protection mode when i turn on my car. It gets hot too. I had 2 kicker 12" l5's and blew the subs with that amp, could i just have a simple problem with the amp? What are all my options?


Protection LED on, no output? Amplifi er is very hot = thermal protection is engaged. Test for proper
impedance at the speaker terminals with a VOM meter (see the diagrams in this manual for minimum
recommended impedance and multiple speaker wiring suggestions). Also check for adequate airfl ow around
the amplifi er. Amplifi er shuts down only while vehicle is running = voltage protection circuitry is engaged.
Voltage to the amplifi er is not within the 10–16 volt operating range. Have the vehicle’s charging and electrical
system inspected. Amplifi er will only play at low volume levels = short circuit protection is engaged. Check
for speaker wires shorted to each other or to the vehicle chassis. Check for damaged speakers or speaker(s)
operating below the minimum recommended impedance.
No or low output? Check the balance control on source unit Check the RCA (or speaker input) and
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that would be the amp. sorry to say. when a wire crosses over, it sends a shock through the amp, there are a few things to try just to see if you fried the amp. the first thing to try is to move your ground to a different location. second thing to look at would be the fuses. alot of times the fuses will blow at the slightest shock. the amp will still turn on if you have an amp with 2 fuses, it just wont be getting all the power it needs, which could be causing your problem. also, it is worth the hour and a half to mount everything down in your vehicle. you might check the kicker website, because i have herd rumors that kicker offers a lifetime warranty on almost all of their products. best of luck, and i hope you didnt fry your amp.

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With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp (not on the point where the ground wire connected to the vehicle) and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage drops below ~11 volts, you need to check the wiring feeding whichever line is dropping too low when the amp goes into protect.

If the voltage is OK, you need to check the speaker wiring and the speaker(s). Try it with a known good speaker if possible to see if the amp works normally.


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1 Answer

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How long will the bass play before the amp kicks into protection mode and how loud are you listening to it? I've noticed with my amps that if they don't have enough air flow they will get hot and kick into protection mode. They will also kick into protection mode if you are running it at more than it can handle. Check your adjustments on both your amp and the head unit. Make sure you are not running more bass than the amp can handle.

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