partial garage conversion

Hi guys, I've been reading this forum forever, and I need some help designing my rooms. I have a space that is 12 x 18, and I need to make it into 2 rooms, a control room and a tracking room. The control room is the most important to me, however I would like the tracking room to be big enough to record drums. I was thinking something like split the room into 12x10 CR and 8x12 Tracking room. I would like to make it so that I don't have parallel walls, etc. If you guys could help me get a rough layout, I would be incredibly indebted to you. I am not even sure if this is enough space to accomplish all of this in. Thanks.

Ok guys, I didn't draw in the bass traps or diffusion panels, but here is a rough layout. I am planning on doing 5 - 7' hanger bass traps with false walls in the rear corners, and slats in the middle of the rear with absorbtion, I don't think I am going to do soffits, but I am going to put up the walls there in case I decide to do it later. Also, I know you normally say that the doors should be separate so that you don't have to enter through the studio to get to the control room, but im not sure I have another option, I can't make a new door to the outside, so it's either enter through the studio to get to the cr, or enter through the cr to get to the studio, and I think I would prefer the latter. So I am assembling my list of materials I will need to buy, and I can't seem to find pricing for 703, is there a place online to buy this stuff? Also, I am going to do the double wall mass-air-mass, and I am not sure what kind of insulation I can get away with. Can I use the RT-19 and still get a decent insulation from the outside. Also, I am planning on doing 1 layer of drywall, 1 layer of MDF, staggered stud on a 2x6 and then RT-19 weaved between the studs and then 1 MDF and 1 drywall. Is this going to be overkill, or is this sufficient insulation? Here is the newest layout:

That's heading in the right direction - there must be at least one door to the rest of the area surely - where is it?? Maybe you could have a door into the rear of your drawn control room from the rest of the house?? cheers john

since this is a garage, the south side is the side with the 2-car garage door. I really don't want to be opening and closing it while anything else is going on in the studio. Plus it is going to be used for storage. would it be better if i reversed the rooms and make the control room closer to the main door so you have to enter the studio through the control room. i was thinking about putting double doors on the studio facing south for moving gear in and out, but i'm not sure if it is a good idea or not for keeping the sound down. i can enter through the garage, but i want to keep it shut when working. use it only for loading / unloading. steve

steve - where's the 'south side' could you redraw your pic with this detail added - where is the garage door ?? you are being vague ;) cheers john

Hi John, Sorry for the confusion. I was speaking relative to the picture, not absolute north/south. The garage door is on the bottom of the picture, and the only other door is on the top. The thing is that this garage faces an alley with a lot of traffic, so we don't want to be entering and exiting from that direction as much as possible. The door in the top of the picture faces the gated backyard which is a much better entrance/exit. I cannot add any doors since this is a rental property, however my landlord is very kind and encourages me to build my little studio in the garage, and has offered his tools and experience building if he can help. I think I may have a better design that I've been working on. I'll post some pictures tonight when I have a chance. Thanks for your input. Steve