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This is a 4 channel amp that when i turn it a little loud it shuts off.. do you know how i can fix this? my other amp does this too and buts its an eclipse. but my mtx amp works fine.

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It could be a number of things; speaker wiring, blown speaker giving overloading feedback, or if you are bridging it, you might have dropped the ohms below the tolerable impedence level.

Posted on Dec 15, 2010

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6ya6ya

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Posted on Jan 02, 2017

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I have a kenwood excelon xr-4s amplifier and in channel 1 and 2 i have front speakers, in 3 and 4 i have a infinity kappa doble coil 4ohm each coil. When i turn it on loud it shut down the amp and start on...


Since you have two dual 4 ohm voice coil subs, hopefully you had one sub wired in parallel to each channel separately (one sub on 3, one sub on 4). That way, each channel gets 2 ohms. If you have both subs bridged across channels 3 and 4 (left + and right -) then you have applied a 1 ohm load to your amp, which would cause the problem you're having. It's possible the amp has been damaged, but the fuses on the amp should have blown to protect the amp. Check your sub wiring to make sure you don't have a 1 ohm load bridged across channels 3 and 4. Also check the fuses on the amp itself to make sure neither of them have blown. If everything is fine there, check your fuse under the hood that's connected to your battery. That fuse could have also blown.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/reginald_bec291de192ca44f

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Hi, you like your sound loud like I do-to prevent the stereo from shutting off simply turn the " BASS " control down a little- 1/3 to 1/2 of full should do the trick, write back to let me know if this helped, good luck and thanks for asking FixYa-Prodzilla.

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either bad ohm load or over heat if the ohs on the speaker wires to the amp are lower than specified use in the manual it will act funny cause it is pusing harder than its meant to and if it gets too hot either bad location or bad amp you can try turning the gain down a little until the amp stays on constantly at high volume

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If the speaker is a 4 ohm DVC (two 4 ohm coils), you can't wire it to get a single 4 ohm load. Try connecting one coil to each of the two rear channels. It may not be as loud but the amp should operate without going into protection.

If the two 4 ohm coils are in parallel, the amp is driving a 2 ohm mono load. That's probably why it's shutting down.

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First,
Disconnect any input cables from the amp. Turn down the volume controls and disconnect the speakers. Power back on. If you still blow fuses with nothing hooked up, have the amp fixed.
If the fuse holds, shut down and connect the speakers, leaving the volume controls down. Power up and see if your fuse holds. If you have hum, an output transistor is most likely shorted. If you have no noise, SLOWLY turn up the volume controls and listen for the hum. If all is quiet, turn down the volume controls and connect your input cables and turn the volume back up. Noise? check your cables!
Mister Phil

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