Bomboy

Hello all, brand new to the forum and a newbie to speakers. After several weeks of research, I’ve decided to buy a pair of Heresy iii & Denon x4300. When listening to the the heresy (at around 65% volume on the receiver) it seem lacking power, not as booming and powerful as my klipsch promedia 2.1 where I have them as my computer speakers. Is this normal? Please advise on what could be the issue, thanks.