weird noise from sub!?

[fisherpricekid 10+ year member]

aight, in my cousins car (which i installed) 2 10" kicker comps, and a kenwood mono sub amp! i ran them in parallel. he called me up one day syaing his subs kicked out i checked it all and i found out that on one of the subs the negative lead was broken no prob can get that fixed but when we wer listening to the other it, played, but it made a scratchy noise then while it was playing i slightly held down the leads and the osund cleared up! then i would let it go and the sub would pound 1 or 2 times then it would sound all scratchy again!? it seems whren the leads of kinda pushed down it soudns good but when the leads go back up they sound scratchy!? any help would be great!?

i have never heard of this before!?

skot

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