I bought these to replace some other 6.5 speakers that weren't giving me the mid-bass I was needing OMG I got what I was looking for these things really rock and give me system that sound I've been work for. They still need time to break in and get better but wow holy WOW so far I'm running them at 80hz and feeding them 200watts each . These things pound if you're thinking about getting these stop thinking and just do it you won't be sorry. Only bad was the speaker terminals are very small I had to trim down my wire to fit.Update 1/22/20It's been awhile now and I have broken these in and let Me tell you people think my subs are playing when it's just my doors I have 2 in each front door with tweeters and 1 in each rear door with 3.5 fosgate speakers running 2 hifonics bxx1200.4 amps on them everything tuned and deadened used fast rings on the back of each speaker and second skin deadener all over doors my system is RIDICULOUSLY LOUD AND CLEAR. These speakers are just insane you have to have them.