Is my room doomed? Pic

The picture could be misleading, but your speakers seem very wide apart.

The speakers currently are 3m apart tweeter to tweeter, 1.5m from the back wall (tweeter to wall).

I have tried pulling out the speakers almost to the middle of the room (about 2.5m out from the backwall of a 5.5m length shortwall), as well as pushing it almost all the way to the wall. The room just kinda sounds dead and muffled. On a scale of 1-10 if the dealer's showroom is a 10, mine is about a 5. The fullness, depth, detail/transparency is just not there. I have also tried covering up the big TV in the middle of the wall with a thick towel but that only muffled the center image a bit.

I keep suspecting it's the lack of sidewalls, and that everything in my room is a softer material (wooden floors, backwall/ceiling is made of wood which is kind of hollow when I knock on it).

Both digital and analogue have the same problems.

I agree with Onhwy61. What is the angle between the speakers and the listening position?

Does the sound get better with the drapes closed? That would be my first concern is the speakers firing at a reflective backwall. As close as you appear to sit from the speakers it may be your speakers are too big for your room.

Actually I don't think the drapes made much difference. I thought it would, but it actually doesn't for some reason.

As far as speakers too big for my room, well my room's volume is quite big if you consider that it's a semi-open floor plan (about 14 meter x 5.5m x 2.8m, but not completely rectangular so minus some volume). If the speakers are too big I would imagine that there would be too much energy, i.e too bright, too forward? That is certainly not the case. It just sounds veiled, with a soundstage that is between the speakers only. As far as depth, it does get deeper as I pull the speakers out, but it does not get more layered and more detailed. The decays on Diana Krall's voice (the "hhhhaaaaaa") is very short as compared to the same speakers/amps (but diff preamp) at the dealer.

I'm getting a bit skeptical here because on a scale from 5-10, if the dealer is a 10 and I'm a 5, I don't know if it's possible that tuning/tweaking/speaker positioning can lift it up to a 10 when most of the equipment is here. I'm using a borrowed Orpheus Two preamp until the Wavac PR T1 arrives. Yes everything's not 100% broken in including cabling, digital, analogue, speakers, but can that make THAT much of a difference to lift it from a 5 to a 10? Also I do not have any power conditioning as everything plugs straight to 3 dedicated 20amp lines into the wall.

The dealer of course says it will get great with time and maybe switch around some cabling. He probably just wants my money (which he already has a lot of).

Should I wait 3 months for everything to break in, keep tuning/tweaking the speaker placement, etc and hope the sound quality can do quantum leaps?