triangle shape studio attic

Hi! My girlfriend and I just bought a house, and we need a place to practice (she plays trumpet i play sax) and a little homestudio. In the attic there's a small room we hoped we could use for this. My main idea is to sound proof it, and 2ndly make it sound good for recording horns. If you guys can help me with bouth it would be great :) I really need some help here, i'm totaly green on studio design, but a little handyman :) I have to have room for: a pair of Alesis M1, Active speakers M-audio keystation pro 88 And my DAW Budget: max 1800 us$ Erlend Stavanger, Norway

And yehh, all the "inner" walls are going down and in the trash (so i can see whats behind and start with clean sheets).... if you guys think thats a good idea? update: I will get more floor space if i move the "knee" walls longer towards the sloping roof, but will that make it even harder to get it to sound good? Whats will be the ideal shape of this room? Is this roomshape difficult to get to sound good?

Erlend, I'd open up a small area of the ceiling and see what's there, I'm sure you'll just see rafters. Find out if there is insulation - if so, seal it back up. Also the vertical walls around the base, see if there's insulation in the cavity. Your room is too small to build a room within room so you just have to beef up the walls. Then you have to treat it acoustically. cheers john

one challenge will be the roof peak. you'll want to be sure to put in plenty of trapping in the peak as well as the corners. with horns (imho) you'll want to keep the room lively without excessive echos. with the ceiling angles you should probably be ok but with the absorption to avoid any bass mode buildup, you should consider slats down the length of the peak instead of total absorption.