All, a 410 + 115 is a combination that I think would suit me pretty well, I'm trying to test it (haven't so far) with some friend's rig. Putting in parallel a 4 Ohm 410 with a 8 Ohm 115 will make a load of 2.7 Ohm if I'm not mistaken which will be fine with my DB750. Nevertheless if you look at how the power will be distributed, much will go to 410 vs. 115 (because the latter has higher impedance), right? If so, and considering that usually 115s have lower sensitivity than a 410s, will the resulting combination of speakers play fine considering just the Ohm and sensitivity factor or it's more reccomendable to equal the Ohms of the speakers combined (most of 410s are available also at 8Ohm, or I think at least the EBS neo 115 is available at 4 Ohms). Thanks for shedding a light on this!