ok guys, like usual, I have a question. I have 2 full marty's in my ranch style home and have had them co located in the front right corner of the room. unfortunately I have some suck outs in my room and have had to live with them for quite a while. however, I've moved my seating position back from the center of the room to 2/3rd back in the room and I've gained some SPL from that. now the "issue" I have is this. I'm using an IPR3000 to power both marty's with 890 watts per channel and have a yamaha 773 as the receiver. gains are maxed out on the IPR and I get no clipping on the amp with it calibrated 6-7 db's hot with my meter. HOWEVER my Yamaha 773 has a -10 to +10 range on the receiver LFE level... with them co-located in the front corner I can do about +4 on that range, but now I swapped them into different corners and I REALLY have smoothed out the nulls, but with them no longer co-located I had to bump the receiver to +7.5 to get the same spl level as them co-located (although now those nulls are VERY much better). the question I have is this. is the +7.5 on the LFE level on my receiver (out of a -10 to +10 range) actually clipping my sub output on the receiver or is that 2.5 I have left enough of a safety margin?