PMC IB1's close to rear wall, is this O.K.?

Alun,

Yes indeed I was trying to give you an idea of bass strength...these are all good speakers including your existing speakers, selection being a matter of taste.

Ryder,

I cannot say with certainty, but I would guess 17X15 or so, placed along the longer wall.
He is quite close to the speakers, around 9 feet, anything closer would not be good.
The acoustic treatment did wonders in his place, there is still a tad of boomines with some material, but nothing that is detrimental.
Seems to me that with these speakers it is more important that you are at the correct distance from the speakers, and at the correct height, than the distance of speakers from the back wall.

Ryder,

As a matter of a fact, my friend used to have the same speakers as you, PMC LB1 Signature, now replaced with IB2. The rest of system remained the same, with addition of room treatment.

Sashav,

Thanks for the tip. I knew the IB2's were too huge for my room. Your friend's room is still much larger than mine. Since I can only place my speakers along the short wall, there is no way the IB2's can fit into a width of 11'.

I am not surprised that you felt the bass was tad boomy in that smallish room as the IB2 really pumps out prodigious bass. When I listened to these at low volume in a very large room(about 20'x50'), the bass is full and controlled with a sound that's well-balanced from top to bottom. I never felt anything was lacking with that setup and my perception towards PMC speakers had changed since then. I ended up with the LB1 Sigs though as these would fit perfectly in my room dimensions. I thought these sounded better than the FB1 but the IB1's just blew these little speakers away. Nevertheless, I have my speakers high-passed with a subwoofer and this takes the system to a higher league. I cannot imagine listening to any monitors without a subwoofer now.

Do let us know in your other thread if the 7B-SST's were a huge improvement over the 4B-SST when you get them.

Thanks for the usefull info. I guess it's time to go and hear them proper before fully commiting to selling my 3.8's.
Cheers