i installed my sub an amp but it's acting weird.
the sub has more base when i am driving over 40 mph. when i slow down the base is low again, wut is going on?

also the sound isn't that clear, wut can i do? have a 600 watt amp with a 120 watt sub.

thanks for you help

 

make sure you have a good ground in the trunk.. also if ur using a stock HU try to ground the LOC