right now in my car i have 2 pioneer premier 6x9s in my rear deck, 85w rms each, powered by a 100w x2 amp. In the front i have 2 jbl gto 6.5s about 40w rms, cant remember for sure, powered by the deck, which is a blaupunkt mp3000 rated at 23w rms per channel. The deck will be replaced by an alpine cde-133bt i have ordered (should be here within the next week). Anyway there has ALWAYS been distortion with heavy bass notes unless i turn the bass down to around 0 or 1 (range is -5 to +5). I have hooked up the amp to the fronts to see if it just maybe wasnt enough for the pioneers but it will distort when hooked to the jbl 6.5's even sooner than the pioneer 6x9s!! So i really dont know if it is just the sh!!ty deck, or if i am asking too much of the speakers or what. But the pioneers are about the best non component 6x9s out there so they should go pretty **** loud i would think. If it is a song with very little bass like a zeppelin song or something like that i can listen to it as loud as i want, but a song like "hear me now" by hollywood undead i have to keep the volume way too low for my liking. So what would you guys recommend i do at this point? I know one thing you might say is also to amp the fronts only but the 6x9s really NEED an amp and the 6.5s do better on HU power than the 6x9's will.