Conservi,
I have MBL111 in the study room 1/3 the size of your 40'x24'. Your room is not small and I would say too big for 121 with pink floyd. You need a 111 or better 101 to fill the room with good quality bass.
I listen to rock and classical to volume tend to be larger than normal.
Find a retailer that allow you to test drive it and exchange for upper model within the test drive period. That will be safer.
Jeff
I have MBL111 in the study room 1/3 the size of your 40'x24'. Your room is not small and I would say too big for 121 with pink floyd. You need a 111 or better 101 to fill the room with good quality bass.
I listen to rock and classical to volume tend to be larger than normal.
Find a retailer that allow you to test drive it and exchange for upper model within the test drive period. That will be safer.
Jeff