subs still play after i switch them off

when i switch my subs off and turn the bass up on the hu for the door speakers the subs are playing the bass with them but really low like its a woofer on a 3 way speaker, is it suppose to still play like that? And whenever i touch or bump the rca cable the subs make noise or bump could it be where i have it grounded? i have a pioneer deh p5000ub head unit, 2 4ohm dvc 12in re sex subs with a rockford t1500bd amp and i have the ground on the bottom of the backseat that holds it down.

Disconnect the subwoofer wires from the amplifier. Do they still act the same way?

i guess that this post is pretty dumb also since i barely realized it ,even though i was messing around with it the other day, was the vibration or something from the speakers movin the subs when you asked that. But the subs still pick up the vocals like a speaker and i can hear the sounds from the engine on the subs

Do you have a Pioneer Radio?

yeah its a pioneer and the noises are gone now i did what it said on that site and now the subs sound better too thanks.