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When i turn up the volume on my head unit my amp goes into protect mode or when i turn up the bass

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  • Dean
    Dean May 11, 2010

    What amp have you got and how many subs?

    This could be a number of problems, starting with incorrect wiring, to not enought power so please state exactly what you have got :) thanks


  • Dalynn Turner May 11, 2010

    Is this at really low volume and have you tried another set of patch cables?

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  • Master
  • 1,039 Answers

You likely have a speaker with a swollen voice coil. Voice coil becomes hot due to under powered amp being clipped. Voice coils swells and rubbs. shoteing amp output causing amp to go into protect. replace speaker before amp is damaged. The more capacity an amp has wattage rating. the easier it is on speakers. Most speakers are damaged by underpowered amps being clipped rrather that too high of amp reting.

Posted on Apr 25, 2009

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Posted on Jan 02, 2017

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No sub woofer output or very little


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So i have installed my amp, epicenter, all wiring is done, hace great ground.. But once i turn my car on to sound check everything starts fine but after turning up the volume a bit.. My amo goes into...


It sounds like you have your gain to high. best way to solve this is by turning the gain way down to - or lowest number , then turn everything on and upto the volume you desire, then slowly up the gain. also avoid using bass boost, I agree it sounds great but it puts strain on the amp and shortens life in the amp. with the bass boost off, you can adjust others (not the gain) to get bass.

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Jan 26, 2013 | Car Audio & Video

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My ph5000d plays until i turn it up then it cuts in and plays then to protect mode back on why dose it do that its just when i turn radio up


Ok because your wattage is too high for the amp when adjusting a amp with speakers always start like this turn amp gain all the way down head unit bass all the way down and treb all the way up then turn on ur highest listening volume that u like then ajust amp to that hight if will stop protect from happening if continues ur sub is too many watts for amp ok

Dec 13, 2012 | Car Audio & Video

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Alpine 9845 cde head unit car stereo i Cannot figure out how to access the Fader not the balance,altho i havent seen that function either. ive been to the alpine site and they dont even mention it. im sure...


Press the Rotary encoder (CDE-9845/CDE-9843
only) or press MODE (CDE-9841 only) repeatedly
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I got a pyle 1800w amp and a 1500w kenwood subs but as i increase the volume in the headunit it goes on protect mode why the other problem i got is as increase the volume in the headunit the bass of the...


The protection modes in these units ****. Most new units have them. What I do is turn down settings on deck and turn up amp as much as possible. Then the protection won't turn on because you won't have to turn it up as high.

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1 Answer

Kenwood amp kac-x401m


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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STR-DE445 Works, but goes into protect when you turn up/down volume


This is a piece of **** unit. Mine only works on the left side, sometimes. When those times are I have NO idea. It doesn't seem to play 5.1 correctly and it goes into speaker protect mode for NO reason. It is TRUE lemon !!! ..let me know if you have any other problems with this JUNK .....schafe1001@aol.com

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Amp went into protect, but front speakers sound distorted too


If the amp still goes into protect mode, the easiest thing to do is disconnect the RCA cables from the amp and see if still goes into protect mode (after turning off/on). If it does, the issue lies in the amp or the wiring to/from the amp (most likely case). Check to make sure no speaker wires came loose and touched +12V or ground (car body). From the sound of it, my guess is something internal to the amp died and will need repair.

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HI Subicbay,

ADjust your Gain setting to limit just enough so the amp does not go into Protect mode. Turn your Gain all the way down, then crank up the bass from your system. GRadually turn up the gain until you trip on protect. Turn the gain back a notch and your set for no more protect.

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