I'm still researching, it is funny that TCR is having the same problem with his Denon combined with 4 ohm speakers. I am far from any engineer or electrical guru as well.
I plan to send Lonnie at Emotiva a quick email to have him respond to some of the things mentioned in the audioholics review.
It appears Audioholics also had some issues at first with the protective circuits shutting down premature, however, Emotiva fixed the issue. That review was done last year, so I assume any new models after that point would have been also fixed. I purchased mine in January, 2007. Here is the quote..." Later on the bench I discovered that the MPS-1 was engaging its soft clipping circuit at around 37-38Vrms into 8 ohm loads and while driving 4 ohm loads the MPS-1 delivered about 31Vrms into 4 ohm load unclipped (note the RBH T-2 System has 4 ohms impedance). However, as I increased the signal level just below clipping, I was able to achieve 33Vrms at 1kHz but the amp shut off when frequency was brought down below 60Hz. It was apparent the sensitivity of the soft clipping circuit / limiter needed some tweaking. I informed Emotiva of my findings and they quickly resolved this issue, sent me a new sample and I didn't observe this problem thereafter"
Another thing they mentioned was different findings on output before clipping..."I was able to achieve a maximum unclipped power of 175wpc into 8 ohms with Vin=1.65V Vout=37.39V unbalanced and about 255wpc into a 4 ohm load with Vin = 1.42V and Vout = 32V. Once I exceeded these measurements, the clamping circuit kicked in rounding off the signal and dramatically increasing distortion. Based on this, I would rate this amp to be a 175wpc into 8 ohms and 270wpc into 4 ohm, not 200wpc / 300wpc 8/4 ohm respectively like Emotiva rated in their literature."