Very possibly. I guess I should have tempered my response by saying I've never seen/experienced the 705/8P - again, at only 12lbs with amp and with the "organ-pipe" resonance - and my experience with my 305P's that everyone said was fabulous - which at their price point are excellent - but I wasn't that thrilled with them. A lot of wooly (not tight) bass that I didn't care for, until I braced and put non-drying clay on the woofer baskets. They were just SO much better on the low end.
Was just throwing my .03 out there. I could very well be wrong.
Agree with Charmeci's experience. I also have the LSR305. It's OK stock, but you can hear smearing from the box. I beefed up the baffles with Durham wood putty (one can for each) and lined the box with No-Rez from GR-research, then added the LSR310 subs with high pass option to remove bass below 80 Hz from the monitor. Much better (esp with the sub)... I think the LSR305 is a very well designed speaker, only limited by the part quality at its price point. Make sure to feed it with high quality DAC. Heck, you can't DIY a decent pair of speakers at $300 including amp.
Duc