I just had a subwoofer installed now my speakers revolve

[ReWiiNd]

I just had a subwoofer installed and now my speakers revolve when im listening to music my front left speaker turns off then turns on then the front right turns off then turns on then the back left... etc i dont understand how this could have happened was the subwoofer installed incorrectly and messed up the wiring in my car? i had a professional install it so if it was his fault i can go back and have him fix it.

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[goingdef 10+ year member]

Is there a stereo imaging function on the stereo

 

[ReWiiNd]

is that like demo mode???