buzzing noise from mids

i have a jl audio 300/4 running my highs (pioneere 6/9 rearfill dls6.5 componets in the front doors)

1995 olds aurora

all sound great except the front right has a noise (engine/alternator/power surge) what ever you would like to call it

my power wire runs down right side under rear seat to  battrey .all my rca, speaker wires run down left side

now my left side is noise free so that lead me to belive the right  speker wire must be picking up a singnal of sorts between where it leaves off from the left.

so i ran new speaker wire to speaker strait through car from amp to crossover that is in door aswell and noise still presitted so in a effort to go about my day and not ruin my new componets i just disconneted the power wire from my battrey think no power to amps the speaker would be safe and noise would stop but i was wrong a gin and the nosie still presit whith no power to amp

ideas please

Have you switched the rca's at the amp?  I would suspect bad rca's or maybe an issue with the x-over. Where is it located?

Speaker wire will not pick up noise as you suggested. I would be cocerned with that.

And is it only coming from the mid?

i have not switch rca and crossover is in door

and yes i do belive only from mid (if tweet is makeing any noise it is at a very low level)

the biggest thing puzzleing me is even whith no power how is it produceing any noise

When you say "no power" what are you referring to?  The engine?

amp being completely unhooked

Try swapping the speake wires at the amplifier and see if the noise changes sides.  Also check to see if the noise is there with the speaker wire removed.  It could also be caused by one of the speaker leads touching metal, or the crossover being near a power source and noise being induced into an inductor.  So check over the speaker installation integrity and crossover placement.