I have a Kenwood KMD x92 Mini Disc HU. It was taken from my previous car. When I installed it in my EP3 it sounds like shit. It sounded Great in my old car. The treble doesn't sound as strong and the bass is weak as well. The stock HU sounds so much better. I was wondering if I can run the stock tweeters from the amp to make the treble stronger or will I blow them.

Does anyone know a cheap fix?