acoustic treatment for my control room

i hope the picture is easy to understand. all of the yellow panels are 2" thick rigid fibreglass. basically im planning on putting 2 foot wide rigid fibreglass across all of the cieling and wall corners (none along the floor) the other pieces are at the first reflection points and also at the back wall. i have a few questions: 1. does this look like enough treatment overall? 2. i already have some insulation type fluffy fibreglass. would i be better off using this or rigid fibreglass at the first reflection points (door, window, ceiling) 3. how far should i space the pieces off the back wall? as much as possible? thanks edit: just wanted to add to avoid confusion, the part that the speakers and monitors sit in is the wardrobe with the doors removed

I'd turn the whole thing around the other way - stick the bed in the cupboard and hang your clothes eitherside and put your speakers up the other end. cheers jophn

that was my first idea but there wouldnt be enough room for everything. i'd end up too close to the speakers and there would be no room to move

is anyone able to help with the questions in my initial post?

Jono - my concern is the effect the 2' deep cavity behind your speakers is going to have on your low frequency response. If you could build a soffit face across the front it would give a better outcome IMO cheers john

that could be possible. do you think i'd have better results putting a fibreglass panel over there, or something more rigid to reflect the sound instead? if i used fibreglass i thought it might function as a huge bass trap? i realise my room is a bit small to use effectively as a control room but at the moment i dont have any other options im still looking for answers to these questions, particularly the second one, because i want to go out and buy the fibreglass soon and get building them: 1. does this look like enough treatment overall? 2. i already have some insulation type fluffy fibreglass. would i be better off using this or rigid fibreglass at the first reflection points (door, window, ceiling) 3. how far should i space the pieces off the back wall? as much as possible? thanks for your help jono

jono - I think I'd put hangers in the cavity and build a solid soffit front to mount your speakers - run it full length except for a 1 foot high port opening across the bottom under your desk. cheers john

do you mean hanging pieces of rigid fibreglass?

yes - but wrapped around soft fiberboard and hung. cheers john

here is a picture of the set up as it is now. at the moment i'm just using hifi speakers but im planning buying some ADAM ANF-10's. as you can see it would be quite difficult to seal off the wardrobe completely i thought that maybe i could use the space to my advantage as a giant bass trap? also, because there will be corner bass traps on the walls directly beside the speakers, will the effect on the bass from the monitors be a big problem? im planning on running a sub under the desk, so the monitors will be crossed over somewhere between 60 and 80Hz im also still wondering whether i should use fluffy or rigid fibreglass at the first reflection points as i need to plan how much rigid fibreglass to buy thanks again

as you can see it would be quite difficult to seal off the wardrobe completely

why?? I see no problem cheers john

i'll experiment to see what works best john will you please answer my other question - im also still wondering whether i should use fluffy or rigid fibreglass at the first reflection points as i need to plan how much rigid fibreglass to buy

sorry Jono - I missed that - definitely rigid fibreglass. why not lash out and do something like this - bit of carpentry required :) cheers john

i definately like that idea, its something that hadn't occurred to me i'll make some measurements and come back with some more questions :D thanks john