Dave- i agree that diffusion is necessary for a good room, but what you list won't do the trick.
i would also agree that dead rooms are too be avoided, and have commented on "absorption"-based rooms in the past. i think a good mix is in order (and what my room is doing)
but a lot of stuff you list is reflective by nature...not diffusive. i was also looking into the drapes route, but the thick "stage" type drapes aren't very aesthetically pleasing that are used to absorp sound. i am going to use fabric blinds backed in vinyl groovers for a more diffuse style (i have a wall of windows to contend with on the left side)
a lot of the room is its size/proportions---i'm unlucky and have a more squarish room which requires more work. if your room is more the "golden ratio"---then more power to you! i am jealous....and if 10 years down the road have a large house, will search for one with dedicated listening room in almost perfect ratio.
i would also agree that dead rooms are too be avoided, and have commented on "absorption"-based rooms in the past. i think a good mix is in order (and what my room is doing)
but a lot of stuff you list is reflective by nature...not diffusive. i was also looking into the drapes route, but the thick "stage" type drapes aren't very aesthetically pleasing that are used to absorp sound. i am going to use fabric blinds backed in vinyl groovers for a more diffuse style (i have a wall of windows to contend with on the left side)
a lot of the room is its size/proportions---i'm unlucky and have a more squarish room which requires more work. if your room is more the "golden ratio"---then more power to you! i am jealous....and if 10 years down the road have a large house, will search for one with dedicated listening room in almost perfect ratio.