I have a pioneer deck running a pair of audioart mids. They got pretty loud, but the bass was killing them. Everyone said bassblockers would make it worse, but, hey, $5 is worth a shot. So i went to my local store, got them and hook them up, and i was shocked how they sounded. They sounded so sweet with my tweets. So now i can really crank it and they stay clear. By the way, they were the 100hz ones