Just go and listen to the speakers you want to buy. I bet DefTech and GoldenEar towers are available at Best Buy and other stores.
Play some movies with loud bass (Dark Phoenix, Pacific Rim, etc.). Turn up the bass volume in those speakers. See what you think.
These speakers might not have "true" subwoofer bass by many of our standards.
But at the end of the day, the salient factor is what you think.
I used to own big DefTech towers. I thought the bass was pretty good. Again, not "true big subwoofer bass", but pretty good.
The main reason I don't like them is because I don't like putting Amps inside speakers. I prefer my amps to be outside the speakers. I think there is a reason why many speakers have a 5-10 YR warranty, but the amps inside them only have a 1-3 YR warranty.