Bass trap. Sloped ceiling conundrum

[shindigger]

Howdy.
Am about to embark on building some home made traps.
Got me some 10cm thick RWA45 Rock Wool slabs.
I am in a loft, shooting down the long walls.

Ceiling is about 8.5 feet at apex, dropping at about 45 degrees to 3 feet at wall behind mix position. Room about 5.7 metres long.
Does this mean if i want to properly straddle these rear corners i have to taper the traps to fit?
Is it acceptable to just put square straddled traps in, up to the lowest point of the intersection?
This would however, leave a little uncovered hollow above the trap.

Monitors are a full 6 foot from the front wall.
This is because there is a stair case leading down which bisects the front wall and my desk position.
This other end is also somewhat irregular as directly behind the left monitor there are 3 small steps leading down to the start of the main staircase which runs down to the lower floor.
The area behind the right monitor disappears in to a void about 10 feet behind and helps to create a real hotch potch of a room.
This is caused by a built in cupboard running 3 parts of the way across the room.
The remaining hollow is where the cupboard stops.

The room is carpeted and i also record in this room.
I did move the raw slabs in to place and noticed that a rough mix im working on sounded less harsh, so there is some potential reward here.

What i thought about was, given that the room is so oddly shaped at the extremities, would i be better off forgetting the traditional front corner bass traps and slapping a big trap immediately in front of the mix position.ie behind the monitors.
There is a nice oak beam i could hang one off of horizontally about 7 foot across. this would drop about a foot behind the monitors.
My mix position is around the 38% in to the room (by chance).
The caveat being that the monitors are already miles from the front wall.Its possible that i could get them about a foot closer if i had to.

I am tempted to just slap a big trap across the back wall rather than in the corners as the front corners are so irregular.
What about the ceiling that slopes down behind me? Should i look to treat that? If i do, i would prefer to use some Auralex type first reflection stuff there, as it is easier applied.
I do have a big feather filled, fabric sofa directly behind mix position too.
I have seen other sloped ceiling studios with minimal foam on the slope behind the mix point.

Have been reading the other forums Ethan Winer Gearslutz etc and think this might be worth a go.
I don't really want to get in to superchunk territory if i can help it.
Though given the odd shapes at the intersections it may actually prove easier to fit.
Especially at the rear.

So before i get the saw out tomorrow,and cut my timber for the frames should i make a big 7 foot long behemoth, or start cutting me some triangles and just look to fill the corners as best i can?

Sorry for length of this post.
Cheers.

[sheggs]

Hi Shindigger,

Did you progress with this? If you still need some advice, please feel free to give me a shout here