In a word, yes. I have had M5s in a bedroom. I suspect the bass impact depends a lot on room interaction and modes.
I've added bass traps to get more low-end. Counter-intuitive, but it works. Plus I'm playing with my old REL T-1 sub to get the pressurization of very low end, crossover set at its minimum, volume at about half gain.
So if you like "slam," M5s may not deliver--directly out of box. Again, a different room might yield different results. Clayton is an honest fellow and gives good advice.