Tonight I wired up my old HK 630 and brought my M3's down for a listen. Unfortunately what I heard has me puzzled/concerned. I started off just quickly hooking my phone up to the HK because I just wanted to get a feel for how the room will sound. Well the sound seemed dull and flat. Definitely not as "alive" as I remember my M3's being in my old HT or even where they've lived in our family room upstairs. I've never done any critical listening in the family room thou. Anyway I figured it could be due to the phones output or source (Google Play) so I tried to find some other source to use. All I could find right now was my ancient Pioneer CD changer. So I hooked it up and started playing some CDs but they all had the same dull lifeless sound. I swapped out the RCA cables but that didn't make any difference. So I then started moving the speakers all around, out from the wall, tilted in, etc. Nothing I've done so far has made any difference. I've checked and the HK is set for tone out (no bass or treble) and surround off so it should just be stereo. The only speakers I have hooked up to it are those M3's which I verified are set to large. I even tried switching polarity on one speaker to make sure.
I can't believe this room would affect the speakers this way. The only non reflective surface is the floor which is carpet.
Here's what it looks like.
