I have a room approx 3.5 x 4.5 and Mission cinema 7 (773e, 77DS and 77C), height 2.5 metres Assuming North and south walls are 4.5 West/East is 3.5 West wall is viewing wall. telly in centre so Left right and centre easily positioned East wall has chimney stack in middle approx 2m wide with 1m on south side and .5 on North South wall has large tall window in middle taht touches ceiling. North wall has door in middle and radiator to east side of door Seating is L shaped sofa against South and east walls If you followed the guidelines there are two places to put the speakers either on east wall or north and south walls wither side of the sofa. Now that I have set the scene here are the questions (assuming you havent fallen asleep) If I place the rear speakers either side of the chimney stack on east wall will the stack spoil the sound (about .4 in depth) If I place the rear speakers on the stack will the fact that they will be close in proximity relative to the room width mean that the rear left/right separation will be ineffective (especially as it will be possible to sit to the left or right of both speakers If I place the speakers to the North and south walls will the radiator have a detrtimental effect on the speaker (assuming speaker is 1m above radiator. Given this set up what recommendations can people give me.