have u bridged ur amps???

yeah I agree, bin the 6x9s or use something like the bass blockers from halfords if you dont want to get rid of the 6x9's but best idea is to get a crossover, or ideally something like a phoenix gold line driver/crossover, this will up the signal to the amps and means that the amps dont have to work as hard, you can then turn the gain down and get the same effect. but with better sound.

6x9s will sound rubbish wi subs unless u can filter the bass outta them wi crossover or setup and just use em for rear fill, my advice bin em and just use standard speakers or summat small

the sub will sound different because you now have more rear fill coming from the 6x9s, its all in your head chances are - simply because you want it to sound so much better, and it probably does - but your brain says rubbish....

make sure the gain for the 6x9s isnt up too much, and same with the sub, if there is any distortion from the fronts, fade it towards the rear until the distortion stops, if it doesnt - amp the fronts as well...will sound a lot better.

any more help please u2u me. cheers.

rite just connected anova amp too power my 6x9 its sounds shit i think ive lost power too the main amp the sub doesnt seem as loud does this happen or have i gone wrong some were help!!!!""""!!!!:(