mixing brands of mid/highs

i thought i replied but i guess not... every time i hit submit the site logs me out. the speakers are bottoming out, they cant get loud enough before they simply can not get any louder. there is loud clapping as the coil hits the magnet and the audio is done. i have my xover at 85hz for hte mids, even raising this to 150hz does not help in volume. the tweeters do not have an issue as they have independent xovers. my sub is set for 100hz so i do not want my mids above that to avoid missing any frequencies. my goal in this is to build a setup that has no dead frequencies.   how can i achieve this?

is the bass boost turned on on your amp?

the bass boost is not turned up on the amp. its used as a mid/high amp

are these alpine 6.5's a component set or are they coaxial speakers? are they classified as shallow mount speakers? ive seen some of the new alpine stuff and they dont seem to be made to handle much power with a very small magnet, even though it is neodymium it sounded very weak. my friend im talking about had a set of 6.5 components and 6x9's and we switched them out for crossfire for the exact same reason, low sounding mid. the crossfires stomped them into the dirt. i dont think adding more speakers will be your solution, i think you might just need better speakers. save your money and get something nice versus buying speaker after speaker.

yes tehy are the component speakers. what is a good speaker to get then? a 6.5 or 8" perhaps? a polk or kicker or mtx? whats a speaker that can take 250W rms or more and hold its own against my sub and tweets?

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where can i buy them at, they are 50.00 each right? i am a little worried at the 100W RMS, right now the tweets are holding with max power so i would have to add some wiring to cut down the power from the amp to only the mids or maybe i could run both these and my alpines together to allow more power to them?