Need advice on acoustic setup

Hello all! This is my first post to this wonderful site. I am looking for help on the acoustic setup for a home studio I am currently building in my attic. I took one big room (12' x 19') in separated it into 2 rooms, my monitoring room and my live room. I have a vocal room that's separate as well. The wall separating the 2 was done with plywood (trying to be temporary). What makes this room difficult is the angled walls. I have included a diagram that I made of what the room looks like. I plan on a carpeted floor in both rooms. The walls are plaster I believe. This house is antique and built in 1836. I am renting but have permission to build this temporary setup. I am looking into a company that sells good cheap acoustic foam. They have 10" x 2' Sheets as one option that I was considering and bass traps as well as many others. I know I need bass traps in the corners of both rooms, just not sure with the angles. The angles going up to the ceiling aren't sharp, their slightly curved (not shown well on diagram). I am curious as to what types of foam, placement and how much. Any help would be much appreciated. Thank you very much.!

Husky, welcome - first off, let me warn you about "cheap" "acoustic" foam - there's no such animal. IF it's cheap, it's marginal at best, and it's NOT fire retardant - I can 99% guarantee this. If you insist on going that way, you won't get the effect you're looking for acoustically and may end up sorry you ever built the room. There's a reason why the Illbruck (Sonex) and Auralex products cost more - they're higher density and fire retardant. Most of the other stuff is just bed foam wrapped in LIES. One such outfit actually just COPIED Auralex' specifications to their site even tho their product is NOTHING like Auralex. For about the same money as the "wanna-be" crap, you should be able to build your own MUCH better performing treatments using rockwool, rigid fiberglass and similar products - take a look at some of these member-built projects for example http://www.johnlsayers.com/phpBB2/viewtopic.php?t=5930 And a general idea of where things would go in a "normal" room- http://www.johnlsayers.com/HR/index1.htm Hopefully this will help you get started... Steve

Thank you very much for the reply. I am still looking into the whole foam verses building my own. Trying to see what would be cost effective and keep the cost down as much as possible. I am still doing my research lol. I included the link to the company I was actually looking into for any opinions. http://www.foamforyou.com/

Checked out their site, and their "acoustic" foam claims to be class B fire retardant (good thing) but any company that calls their foam "sound proofing" is no one I'd do business with. If you check out this company's closest location to you http://www.spi-co.com/servicecenterdirectory.cfm and ask about either rigid fiberglass or rockwool in 3 to 6 PCF (Pounds per Cubic Foot) density, you should be able to get something in a 2" or 3" thickness that'll cost maybe a little more but do TWICE as much for your acoustics in the same space - their offerings vary from place to place and day to day, so call and verify price and availability (and ask us) BEFORE making a trip. Trust me on this - you will like the way your room sounds a TON more going this route... Steve

Thank you again. I've been checking out the NRC of the foam from the previously mentioned store and so far in the mass reading I've done, for the price and the fact that I am renting and only plan on being in this apartment for 2 years I think I'll stick with the store foam. I hope in no way I offend you because your advice has greatly helped me. When I purchase a home I will much indeed look into buying the 703 insulation and try a DIY approach I've seen here for my permanent studio I plan to build. The only main question that I still have, is how in your opinion would you setup foam panels to tame the reflections in the "monitoring room"? As you can see from the diagram, the uneven curve of the roof and the 5' space is what I am having the hardest time determining how to properly set it up for the best acoustics. I know of bass traps in the back by the corners and pulling the speakers away from the wall and taming reflections from the "mirror points" of the monitors. Just not sure how the angled roof with alter things and how to fix it. Thank you again very much for any advice given. :-)