I ended up upgrading my front door speakers cuz my passenger speaker was blown and my driver side was going bad I bought a jbl gx628 60Wrms 180W peak they were 6 1/2, I soldered the negative and the positive in the correct way I connect them today and they didn’t work can someone tell me what I could’ve done wrong or if I need an amp or something my back back speakers work and my passenger speakers work as well